F75377 [FINTEK]
H/W Monitor IC with Automatic Fan Speed Control; H / W监控IC，具有自动风扇速度控制
| 型号： | F75377 |
| 厂家： | 
FEATURE INTEGRATION TECHNOLOGY INC. |
| 描述： | H/W Monitor IC with Automatic Fan Speed Control |
| 文件： | 总66页 (文件大小：1474K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
F75377
F75377 Datasheet
H/W Monitor IC with Automatic Fan Speed Control
Release Date: March, 2008
Revision: V0.12P
March, 2008
V0.12P
F75377
F75377 Datasheet Revision History
Version
V0.10P
V0.11P
V0.12P
Date
Page
Revision History
2007/12/18
2007/12/19
2008/3/3
-
-
-
Preliminary Version.
Modify pin assignment and package type
Add function/register descriptions
Please note that all data and specifications are subject to change without notice. All the trade marks of products and
companies mentioned in this data sheet belong to their respective owners.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Customers using or selling these products for use
in such applications do so at their own risk and agree to fully indemnify Fintek for any damages resulting from such
improper use or sales.
March, 2008
V0.12P
F75377
Table of Contents
1. GENERAL DESCRIPTION......................................................................................................................................................8
2. FEATURES ....................................................................................................................................................................................8
3. KEY SPECIFICATIONS ..............................................................................................................................................................9
4. PIN CONFIGURATION.............................................................................................................................................................10
5. PIN DESCRIPTION....................................................................................................................................................................10
5.1.
5.2.
POWER PIN ...................................................................................................................................................................11
MONITORING ITEMS AND FAN SPEED CONTROL ...........................................................................................................11
6. FUNCTION DESCRIPTION .....................................................................................................................................................12
6.1 ACCESS INTERFACE..........................................................................................................................................................12
6.2 TEMPERATURE MONITORING............................................................................................................................................13
6.3 BETA COMPENSATION.......................................................................................................................................................14
6.4 PECI/SST MASTER..........................................................................................................................................................15
6.5 FAN CONTROL MACHINE..................................................................................................................................................15
6.6 PCB LAYOUT GUIDE ........................................................................................................................................................19
7. REGISTER DESCRIPTION......................................................................................................................................................20
7.1 CONFIGURATION REGISTER INDEX 01H .......................................................................................................................20
7.2 CONFIGURATION REGISTER INDEX 0AH.......................................................................................................................20
7.3 TCCATEMP REGISTER INDEX 0CH............................................................................................................................21
7.4 SSTADDRESS REGISTER INDEX 0DH...........................................................................................................................21
7.5 PECI SLOPE REGISTER INDEX 0EH..............................................................................................................................21
7.6 CONFIGURATION REGISTER INDEX 11H........................................................................................................................21
7.7 EXTERNAL DEVICE ADDRESS REGISTER - INDEX 40H ~ 46H ............................................................................................22
7.8 EXTERNAL DEVICE INDEX REGISTER - INDEX 48H ~ 4EH.................................................................................................22
7.9 EXTERNAL DEVICE DATA REGISTER - INDEX 4F...............................................................................................................22
7.10
7.11
7.12
7.13
7.14
7.15
EXTERNAL DEVICE ENABLE REGISTER - INDEX 50H.....................................................................................................22
EXTERNAL DEVICE SELECT REGISTER - INDEX 51H......................................................................................................22
EXTERNAL DEVICE MONITORING FREQUENCY SELECT REGISTER 1 - INDEX 52H.........................................................23
EXTERNAL DEVICE MONITORING FREQUENCY SELECT REGISTER 2 - INDEX 53H.........................................................23
I2C MASTER CONTROL REGISTER - INDEX 54H ............................................................................................................23
INTERFACE CONTROL REGISTER - INDEX 55H...............................................................................................................23
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7.16
7.17
7.18
7.19
7.20
7.21
7.22
7.23
7.24
7.25
7.26
7.27
7.28
7.29
7.30
7.31
7.32
7.33
7.34
7.35
7.36
7.37
7.38
7.39
7.40
7.41
7.42
7.43
7.44
7.45
7.46
7.47
7.48
7.49
7.50
7.51
I2C MASTER STATUS REGISTER - INDEX 56H................................................................................................................23
FAN PIN FUNCTION SELECT AND PIN STATUS REGISTER - INDEX 57H ...........................................................................24
FAN GPIO FUNCTION CONTROL REGISTER - INDEX 58H...............................................................................................24
TEMPERATURE PME# ENABLE REGISTER INDEX 60H (IF DEV_BANK_EN IS 0)....................................................24
TEMPERATURE PME# ENABLE REGISTER INDEX 60H (IF DEV_BANK_EN IS 1)....................................................24
TEMPERATURE INTERRUPT STATUS REGISTER INDEX 61H (IF DEV_BANK_EN IS 0)..............................................25
TEMPERATURE INTERRUPT STATUS REGISTER INDEX 61H (IF DEV_BANK_EN IS 1)..............................................25
TEMPERATURE REAL TIME STATUS REGISTER INDEX 62H (IF DEV_BANK_EN IS 0)..............................................26
TEMPERATURE REAL TIME STATUS REGISTER INDEX 62H (IF DEV_BANK_EN IS 1)..............................................26
EXTERNAL DEVICE BANK SELECT REGISTER INDEX 65H .........................................................................................27
TEMPERATURE OFFSET BANK SELECT REGISTER -- INDEX 67H .....................................................................................27
TEMPERATURE OFFSET REGISTER -- INDEX 68H ...........................................................................................................27
LOCALAND TEMP1 LIMIT HYSTERSIS SELECT REGISTER -- INDEX 6CH (IF DEV_BANK_EN IS 0) .........................28
TEMP3 AND TEMP4 LIMIT HYSTERSIS SELECT REGISTER -- INDEX 6CH (IF DEV_BANK_EN IS 1)..........................28
TEMP2 LIMIT HYSTERSIS SELECT REGISTER -- INDEX 6DH (IF DEV_BANK_EN IS 0) ..............................................28
TEMP5 AND TEMP6 LIMIT HYSTERSIS SELECT REGISTER -- INDEX 6DH (IF DEV_BANK_EN IS 1)..........................28
TEMP7 AND TEMP8 LIMIT HYSTERSIS SELECT REGISTER -- INDEX 6EH (IF DEV_BANK_EN IS 1)..........................29
DIODE OPEN STATUS REGISTER -- INDEX 6FH (IF DEV_BANK_EN IS 0)...............................................................29
DIODE OPEN STATUS REGISTER -- INDEX 6FH (IF DEV_BANK_EN IS 1)...............................................................29
TEMPERATURE REGISTER INDEX 70H ~ 83H .............................................................................................................30
TEMPERATURE FILTER SELECT REGISTER -- INDEX 8EH ...............................................................................................31
FAN PME# ENABLE REGISTER INDEX 90H ..............................................................................................................31
FAN INTERRUPT STATUS REGISTER INDEX 91H........................................................................................................32
FAN REAL TIME STATUS REGISTER INDEX 92H........................................................................................................32
FAN TYPE SELECT REGISTER -- INDEX 94H...................................................................................................................32
FAN MODE SELECT REGISTER -- INDEX 96H..................................................................................................................33
AUTO FAN1 AND FAN2 BOUNDARY HYSTERSIS SELECT REGISTER -- INDEX 98H..........................................................33
AUTO FAN3 AND FAN4 BOUNDARY HYSTERSIS SELECT REGISTER -- INDEX 99H..........................................................34
FAN1~FAN3 UP FAN DUTY CHANGE RATE SELECT REGISTER -- INDEX 9A ..................................................................34
FAN1~FAN3 DOWN FAN DUTY CHANGE RATE SELECT REGISTER -- INDEX 9BH ..........................................................34
FAN1 AND FAN2 START UP DUTY-CYCLE/VOLTAGE INDEX 9CH ...................................................................35
FAN3 AND FAN4 START UP DUTY-CYCLE/VOLTAGE INDEX 9DH ...................................................................35
FAN SMI TIME REGISTER -- INDEX 9FH........................................................................................................................35
FAN1 INDEX A0H- AFH.................................................................................................................................................36
FAN2 INDEX B0H- BFH.................................................................................................................................................37
FAN3 INDEX C0H- CFH.................................................................................................................................................37
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7.52
7.53
7.54
7.55
7.56
7.57
7.58
7.59
7.60
7.61
7.62
7.63
7.64
7.65
7.66
7.67
7.68
7.69
7.70
7.71
7.72
7.73
7.74
7.75
7.76
7.77
7.78
7.79
7.80
7.81
7.82
7.83
7.84
7.85
7.86
7.87
FAN1 CONTROL REGISTER – INDEX D0H .....................................................................................................................38
FAN2 CONTROL REGISTER – INDEX D1H .....................................................................................................................38
FAN3 CONTROL REGISTER – INDEX D2H .....................................................................................................................39
FAN CONTROL REGISTER – INDEX D3H .......................................................................................................................39
FAN TABLE BANK SELECT – INDEX D5H ........................................................................................................................39
FAN T0 CONTROL REGISTER 1 – INDEX D6H ...............................................................................................................40
FAN T0 CONTROL REGISTER 2 – INDEX D7H ...............................................................................................................40
FAN T0 CONTROL REGISTER 3 – INDEX D8H ...............................................................................................................40
FAN T0 CONTROL REGISTER 4 – INDEX D9H..............................................................................................................41
FAN T0 CONTROL REGISTER 5 – INDEX DAH ..............................................................................................................41
FAN T0 CONTROL REGISTER 6 – INDEX DCH...............................................................................................................41
FAN T0 CONTROL REGISTER 7 – INDEX DDH ..............................................................................................................42
FAN T0 CONTROL REGISTER 8 – INDEX DEH...............................................................................................................42
FAN T1 CONTROL REGISTER 1 – INDEX D6H ...............................................................................................................42
FAN T1 CONTROL REGISTER 2 – INDEX D7H ...............................................................................................................42
FAN T1 CONTROL REGISTER 3 – INDEX D8H ...............................................................................................................43
FAN T1 CONTROL REGISTER 4 – INDEX D9H ...............................................................................................................43
FAN T1 CONTROL REGISTER 5 – INDEX DAH ..............................................................................................................44
FAN T1 CONTROL REGISTER 6 – INDEX DCH...............................................................................................................44
FAN T1 CONTROL REGISTER 7 – INDEX DDH ..............................................................................................................44
FAN T1 CONTROL REGISTER 8 – INDEX DEH...............................................................................................................44
FAN T2 CONTROL REGISTER 1 – INDEX D6H ...............................................................................................................45
FAN T2 CONTROL REGISTER 2 – INDEX D7H ...............................................................................................................45
FAN T2 CONTROL REGISTER 3 – INDEX D8H ...............................................................................................................46
FAN T2 CONTROL REGISTER 4 – INDEX D9H ...............................................................................................................46
FAN T2 CONTROL REGISTER 5 – INDEX DAH ..............................................................................................................46
FAN T2 CONTROL REGISTER 6 – INDEX DCH...............................................................................................................46
FAN T2 CONTROL REGISTER 7 – INDEX DDH ..............................................................................................................47
FAN T2 CONTROL REGISTER 8 – INDEX DEH...............................................................................................................47
FAN T3 CONTROL REGISTER 1 – INDEX D6H ...............................................................................................................47
FAN T3 CONTROL REGISTER 2 – INDEX D7H ...............................................................................................................48
FAN T3 CONTROL REGISTER 3 – INDEX D8H ...............................................................................................................48
FAN T3 CONTROL REGISTER 4 – INDEX D9H ...............................................................................................................48
FAN T3 CONTROL REGISTER 5 – INDEX DAH ..............................................................................................................49
FAN T3 CONTROL REGISTER 6 – INDEX DCH...............................................................................................................49
FAN T3 CONTROL REGISTER 7 – INDEX DDH ..............................................................................................................49
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F75377
7.88
7.89
7.90
7.91
7.92
7.93
7.94
7.95
7.96
7.97
7.98
7.99
FAN T3 CONTROL REGISTER 8 – INDEX DEH...............................................................................................................50
FAN T4 CONTROL REGISTER 1 – INDEX D6H ...............................................................................................................50
FAN T4 CONTROL REGISTER 2 – INDEX D7H..............................................................................................................50
FAN T4 CONTROL REGISTER 3 – INDEX D8H ...............................................................................................................51
FAN T4 CONTROL REGISTER 4 – INDEX D9H ...............................................................................................................51
FAN T4 CONTROL REGISTER 5 – INDEX DAH ..............................................................................................................51
FAN T4 CONTROL REGISTER 6 – INDEX DCH...............................................................................................................52
FAN T4 CONTROL REGISTER 7 – INDEX DDH ..............................................................................................................52
FAN T4 CONTROL REGISTER 8 – INDEX DEH...............................................................................................................52
FAN T5 CONTROL REGISTER 1 – INDEX D6H ...............................................................................................................52
FAN T5 CONTROL REGISTER 2 – INDEX D7H ...............................................................................................................53
FAN T5 CONTROL REGISTER 3 – INDEX D8H ...............................................................................................................53
7.100 FAN T5 CONTROL REGISTER 4 – INDEX D9H ...............................................................................................................54
7.101 FAN T5 CONTROL REGISTER 5 – INDEX DAH ..............................................................................................................54
7.102 FAN T5 CONTROL REGISTER 6 – INDEX DCH...............................................................................................................54
7.103 FAN T5 CONTROL REGISTER 7 – INDEX DDH ..............................................................................................................54
7.104 FAN T5 CONTROL REGISTER 8 – INDEX DEH...............................................................................................................55
7.105 FAN T6 CONTROL REGISTER 1 – INDEX D6H ...............................................................................................................55
7.106 FAN T6 CONTROL REGISTER 2 – INDEX D7H ...............................................................................................................55
7.107 FAN T6 CONTROL REGISTER 3 – INDEX D8H ...............................................................................................................56
7.108 FAN T6 CONTROL REGISTER 4 – INDEX D9H ...............................................................................................................56
7.109 FAN T6 CONTROL REGISTER 5 – INDEX DAH ..............................................................................................................56
7.110 FAN T6 CONTROL REGISTER 6 – INDEX DCH...............................................................................................................57
7.111 FAN T6 CONTROL REGISTER 7 – INDEX DDH ..............................................................................................................57
7.112 FAN T6 CONTROL REGISTER 8 – INDEX DEH...............................................................................................................57
7.113 FAN T7 CONTROL REGISTER 1 – INDEX D6H ...............................................................................................................57
7.114 FAN T7 CONTROL REGISTER 2 – INDEX D7H ...............................................................................................................58
7.115 FAN T7 CONTROL REGISTER 3 – INDEX D8H ...............................................................................................................58
7.116 FAN T7 CONTROL REGISTER 4 – INDEX D9H ...............................................................................................................59
7.117 FAN T7 CONTROL REGISTER 5 – INDEX DAH ..............................................................................................................59
7.118 FAN T7 CONTROL REGISTER 6 – INDEX DCH...............................................................................................................59
7.119 FAN T7 CONTROL REGISTER 7 – INDEX DDH ..............................................................................................................59
7.120 FAN T7 CONTROL REGISTER 8 – INDEX DEH...............................................................................................................60
7.121 FAN T8 CONTROL REGISTER 1 – INDEX D6H ...............................................................................................................60
7.122 FAN T8 CONTROL REGISTER 2 – INDEX D7H ...............................................................................................................60
7.123 FAN T8 CONTROL REGISTER 3 – INDEX D8H ...............................................................................................................61
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7.124 FAN T8 CONTROL REGISTER 4 – INDEX D9H ...............................................................................................................61
7.125 FAN T8 CONTROL REGISTER 5 – INDEX DAH ..............................................................................................................61
7.126 FAN T8 CONTROL REGISTER 6 – INDEX DCH...............................................................................................................62
7.127 FAN T8 CONTROL REGISTER 7 – INDEX DDH ..............................................................................................................62
7.128 FAN T8 CONTROL REGISTER 8 – INDEX DEH...............................................................................................................62
8. ELECTRICAL CHARACTERISTIC........................................................................................................................................63
8.1 ABSOLUTE MAXIMUM RATINGS ............................................................................................................................................63
8.2 DC CHARACTERISTICS ..........................................................................................................................................................63
8.3 AC CHARACTERISTICS ..........................................................................................................................................................65
9. ORDERING INFORMATION ...................................................................................................................................................65
10. PACKAGE DIMENSIONS......................................................................................................................................................66
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F75377
1. General Description
F75377 is a system hardware monitoring and automatic fan speed controlling IC specific designed for
graphic cards and PC etc. The F75377 can monitor several critical hardware parameters of the system,
including temperatures and fan speeds which are very important for the system to work stably and
properly.
The chip can monitor up to 3 fan tachometer inputs and 9 temperature inputs (6 remotes from external
sensor devices by I2C/SST interface, 2 remotes from external sensor D1+/D2+ and 1 local sensor). The
remote temperature sensor can be performed by transistor 2N3906 and CPU/GPU thermal diode. The
F75377 also supports beta-compensation algorithm (BJT Model) for new generational 45nm CPU.
In fan control machine, the F75377 can provide automatic fan speed control so that the system can
operate at the minimum acoustic noise. This chip supports not only PWM duty mode (PWMOUT) for fan
speed control. The F75377 supports Heceta-like function; the fan speed control can follow one or more
different temperature inputs. Besides 3 sets temperature inputs, also can read temperature from other
devices by I2C, SST and PECI interfaces. The I2C Master supports general temperature sensor device
protocol, AMD TSI protocol and next generational Intel chipset MCTP SMBus protocol. Others, internal
oscillator was built in this chip. Also the users can set up the upper and lower limits (alarm thresholds) of
all monitored parameters and the F75377 can also issue warning messages for system protection when
there is something wrong with monitored items.
Through the BIOS or application software, the users can read all the monitored parameters of system all
the time. And a pop-up warning can be also activated when the monitored item was out of the
proper/pre-setting range. The F75377 is in the green package of 150mil 20-pin SSOP and powered by
3.3V.
2. Features
Provide 1 on-chip local and 2 remote temperature sensors
z
Accuracy ±1 oC from +60oC to +100oC on remote channel
Accuracy ±3 oC from +60oC to +100oC on local channel
z
Support 6 temperature inputs from external sensor devices (ex: F75395/F75393)
Beta-compensation support for new generational CPU.
Up to 3 fan speed monitoring inputs and 3 automatic fan speed control
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F75377
Fan-Temperature mapping selection support.
Provide PME protection signals
Programmable limited and setting points for all monitored items
Support 4 GPIO pins for flexible application
Support PWM fan control
4-pins PWM fan support
PECI interface for Intel CPU temperature sensing
SST Master interfaces for external devices’ temperature sensing
SST Slave interface for Intel Chipset
2-wire I2C Master/Slave interfaces
I2C protocol support AMD TSI and Intel MCTP
I2C to SST Master bridge
VCC3V operation and 20-SSOP Green Package(150mil)
3. Key Specifications
Supply Voltage
3.0V to 3.6V
Operating Supply Current
Measured Range
1mA typ.
-40 ~ 127 oC
±1oC from +60oC to +100oC
±3oC from +60oC to +100oC
Remote Diode Temperature Accuracy
Local Temperature Accuracy
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4. Pin Configuration
,
5. Pin Description
ILv/OD8-S1
OOD12
AOUT
OD12
OD12-5V
INts5V
AIN
- Low level bi-directional pin (VIH Æ 0.9V, VIL Æ 0.6V.). Output with 8mA drive and 1mA sink capability.
- can select to OD or OUT by register, with 12 mA source-sink capability.
- Output pin(Analog).
- Open-drain output pin with 12 mA sink capability.
Open-drain output pin with 12 mA sink capability, 5V tolerance.
- TTL level input pin and schmitt trigger, 5V tolerance.
- Input pin(Analog).
P
- Power.
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5.1. Power Pin
Pin No.
Pin Name
VCC
VSB
Type
P
P
Description
1
20
8
3.3V power supply voltage input
3.3V standby power supply voltage input
GND
GND
P
5.2. Monitoring Items and Fan Speed Control
Pin No.
Pin Name
Type
PWR
Description
2
SST_M
ILv/OD8-S1 VCC
ILv/OD8-S1 VCC
ILv/OD8-S1 VCC
Intel SST master hardware monitor interface
3
4
5
PECI
SST_S
D1+
Intel PECI hardware monitor interface.
Intel SST slave hardware monitor interface
Positive connection to remote temperature sensor
AOUT
AIN
VCC
6
7
D-
D2+
AGND
AOUT
AIN
VCC
VCC
Negative connection to remote temperature sensor
Positive connection to remote temperature sensor
9
FANIN3
GPIO3
FANCTL3
INts5V
VCC
VCC
0V to +3.3V amplitude fan tachometer input.
General purpose I/O pin. Default Open drain
Use PWM duty cycle to control fan3 speed.
Use linear voltage output (0~3.3V) to control fan3 speed.
General purpose I/O pin. Default Open drain
0V to +3.3V amplitude fan tachometer input.
General purpose I/O pin. Default Open drain
Use PWM duty cycle to control fan2 speed.
Use linear voltage output (0~3.3V) to control fan2 speed.
General purpose I/O pin. Default Open drain
0V to +3.3V amplitude fan tachometer input.
Use PWM duty cycle to control fan1 speed.
INts5V/OD12
OOD12
AOUT
INts5V/OD12
INts5V
10
GPIO2
FANIN2
GPIO1
FANCTL2
11
12
VCC
VCC
INts5V/OD12
OOD12
AOUT
GPIO0
FANIN1
FANCTL1
INts5V/OD12
INts5V
OOD12
13
14
VCC
VCC
AOUT
OD12-5v
Use linear voltage output (0~3.3V) to control fan1 speed.
System management interrupt (Pure open drain). This pin will be
active low when there is something wrong with voltage, temperature
and fan. See register description index 33h
15
PME#
VCC
16
SCLK_S
INts5V
VCC
Slave serial bus clock
17
18
19
SDATA_S
SCLK_M
SDATA_M
INts5V/OD12 VCC
INts5V VCC
INts5V/OD12 VCC
Slave serial bus data
Master serial bus clock
Master serial bus data
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6. Function Description
F75377 is a system hardware monitoring and automatic fan speed controlling IC specific designed for
graphic cards and PC etc. The F75377 can monitor several critical hardware parameters of the system,
including temperatures and fan speeds which are very important for the system to work stably and
properly.
The chip can monitor up to 3 fan tachometer inputs and 9 temperature inputs (6 remotes from external
sensor devices by I2C/SST interface, 2 remotes from external sensor D1+/D2+ and 1 local sensor). The
remote temperature sensor can be performed by transistor 2N3906 and CPU/GPU thermal diode. The
F75377 also supports beta-compensation algorithm (BJT Model) for new generational 45nm CPU.
In fan control machine, the F75377 can provide automatic fan speed control so that the system can
operate at the minimum acoustic noise. This chip supports not only PWM duty mode (PWMOUT) for fan
speed control. The F75377 supports Heceta-like function; the fan speed control can follow one or more
different temperature inputs. Besides 3 sets temperature inputs, also can read temperature from other
devices by I2C, SST and PECI interfaces. The I2C Master supports general temperature sensor device
protocol, AMD TSI protocol and next generational Intel chipset MCTP SMBus protocol. Others, internal
oscillator was built in this chip. Also the users can set up the upper and lower limits (alarm thresholds) of
all monitored parameters and the F75377 can also issue warning messages for system protection when
there is something wrong with monitored items.
6.1 Access Interface
The F75377 can be connected to a compatible 2-wire serial system management bus as a slave device
under the control of the master device, using two device terminals SCL and SDA. The F75377 supports
I2C protocol of, “Write Byte”, “Read Byte”, both with or without Packet Error checking (PEC) which is
calculated using CRC-8. For detail information about PEC, please check I2C specification. F75377 also
supports Alert Response Address (ARA) protocol.
The operation of the protocol is described with details in the following sections.
(a) I2C write to internal address register followed by the data byte
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0
1
7
8
0
7
8
SCL
SDA
0
0
1
1
0
0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
Start By
Master
Ack
Ack
by
395
by
Frame 1
Frame 2
395
Serial Bus Address Byte
Internal Index Register Byte
0
7
8
SCL (Continued)
SDA (Continued)
D7
D6
D5
D4
D3
D2
D1
D0
Stop
by
Master
Frame 3
Data Byte
Figure 1. Serial Bus Write to Internal Address Register followed by the Data Byte
(b) Serial bus write to internal address register only
0
1
7
8
0
7
8
SCL
SDA
0
0
1
1
1
0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
Start By
Master
Ack
by
395
Stop by
Master
Ack
by
395
Frame 1
Serial Bus Address Byte
Frame 2
Internal Index Register Byte
0
Figure 2. Serial Bus Write to Internal Address Register Only
(c) Serial bus read from a register with the internal address register prefer to desired location
0
7
8
0
7
8
SCL
SDA
1
0
0
1
1
1
0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
Start By
Master
Ack
by
Master
Ack
by
395
Stop by
Master
Frame 1
Serial Bus Address Byte
Frame 2
Internal Index Register Byte
0
Figure 3. Serial Bus Read from Internal Address Register
6.2 Temperature Monitoring
The F75377 monitors local and 2 remote temperature sensors. Both can be measured from -40°C to
127°C.
The temperature format is as the following table:
Temperature ( High Byte )
Digital Output
0000 0000
0000 0001
0001 1001
Temperature ( Low Byte )
Digital Output
000 0 0000
001 0 0000
010 0 0000
0°C
1°C
0°C
0.125°C
0.250°C
25°C
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F75377
50°C
75°C
0011 0010
0100 1011
0101 1010
0110 0100
1000 1100
0.375°C
0.500°C
0.625°C
0.750°C
0.875°C
011 0 0000
100 0 0000
101 0 0000
110 0 0000
111 0 0000
90°C
100°C
140°C
Remote-sensor transistor manufacturers
Manufacturer
Panasonic
Philips
Model Number
2SB0709 2N3906
PMBT3906
6.3 Beta Compensation
The F75377 is configured to detect the temperature of diodes (e.g. 2N3906) or CPU thermal diodes. The
diode can be connected in different way as below Figure.
D+
D-
D+
D-
Substrate PNP transistor
i.e. CPU
Discrete PNP transistor
i.e. 2N3906
The basic of the temperature sensor follows mathematical formula as below:
1+ β
1
Ic1
β1
KT
q
Ie
KT
q
1
∆VBE
=
× ln
=
× ln
Ie2
1+ β
2
Ic2
β2
The F75377 measures temperature from the thermal diodes by the basic. In traditional case, the F75377
outputs dual currents to a thermal diode. Then the F75377 calculates the absolute temperature by △VBE.
For discrete transistor (i.e. 2N3906), the beta is normally very high such that the percent change in beta
is very small. For example, 15% variation in beta for two forced IE currents and the beta is 50 would
contribute about 0.32℃ error per 100℃. For Substrate PNP transistor (i.e. CPU), the beta is very small
such that the proportional beta variation will very high, and it will cause large error in temperature
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measurement. For example, 15% variation in beta for two forced IE currents and the beta is 0.5 would
contribute about 11.12℃ error per 100℃.
In Order to solve the second issue, the F75377 provides a beta compensation solution for accurate
temperature sensing. The F75377 can support the beta range over 0.2 for beta compensation. In this
new method, the F75377 will provide two IE currents, and feedback two IB currents. The F75377 will
auto-adjust IE (IE1 and IE2) current and feedback IB (IB1 and IB2) promptly for getting proper IC
proportion (IC1/ IC2), then calculates the accurate temperature. This algorithm of beta compensation is
suitable for substrate transistor or new generational CPU (i.e. 45nm CPU) because small beta and high
proportional beta variation.
6.4 PECI/SST Master
F75377 Support 6 external device inputs for temperature reading by SST and pass to host by I2C. It’s
really a SST to I2C bridge IC for some specific SST temperature sensors’ application. User can ready
SST temperature sensor by F75377 bridge function. For instance, user would like to read an external
SST temperature sensor by F75377. She could follow below list to read the SST Device Temperature.
If the address/index of SST device is 49h/00h.Before you read the temperature from SST
device. You should do below list:
1. write register 49h to register 40h (Define external device0 address)
2. write 00h to register 48h (Define external device0 index)
3. write “1” to register 50h bit 0 (Enable external device0)
4. read register 78h to get the temperature value of SST device
Totally the F75377 can support 6 external device inputs by SST master. About the detail setting of register,
please refer the register description.
Others, the F75377 also support PECI Master for CPU temperature reading. Than the fan control
machine can implement the Fan to cool down CPU temperature Please refer the register
description for detail.
6.5 Fan Control Machine
Fan speed count
Inputs are provided by the signals from fans equipped with tachometer outputs. The level of these signals
should be set to TTL level, and maximum input voltage cannot be over 5V. If the input signals from the
tachometer outputs are over the 5V, the external trimming circuit should be added to reduce the voltage
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to obtain the input specification. The normal circuit and trimming circuits are shown as follows:
+12V
+12V
Pull-up resister
4.7K Ohms
Pull-up resister < 1K
or totem-pole output
+12V
FAN Out
GND
22K~30K
+12V
FAN Out
GND
Fan Input
10K
> 1K
FANIN 1
Fan Input
FANIN 1
3.3V Zener
F75377
F75377
FAN
Connector
Fan with Tach Pull-Up to +12V, or
Fan with Tach Pull-Up to +12V, or Totern-Pole
Output and Register Attenuator
Totem-Pole Putput and Zener Clamp
+5V
+5V
Pull-up resister
4.7K Ohms
Pull-up resister < 1K
or totem-pole output
+5V
1K~2.7K
Fan Input
+5V
FAN Out
GND
> 1K
FAN Out
GND
FANIN1
Fan Input
FANIN1
10K
3.3V Zener
F75377
F75377
FAN
Connector
Fan with Tach Pull-Up to +5V, or
Totem-Pole Putput and Zener Clamp
Fan with Tach Pull-Up to +5V, or Totern-Pole
Output and Register Attenuator
Determine the fan counter according to:
1.5×106
Count =
RPM
In other words, the fan speed counter has been read from register, the fan speed can be evaluated by the
following equation. As for fan, it would be best to use 2 pulses tachometer output per round.
1.5×106
RPM =
Count
Fan speed control
The F75377 provides PWM DUTY fan speed control method. The duty cycle of PWM can be
programmed by a 8-bit register. The default duty cycle is set to 100%, that is, the default 8-bit registers is
set to FFh. The expression of duty can be represented as follows.
Programmed8bit Register Value
Duty_cycle(%) =
×100%
255
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+5V
+12V
R2
R1
R1
R2
PNP Transistor
PNP Transistor
D
D
G
G
PWM Clock Input
NMOS
PWM Clock Input
NMOS
S
+
-
S
+
-
C
C
FAN
FAN
Fan speed control mechanism
There are some modes to control fan speed and they are 1.Stage auto mode, 2. Linear auto mode. More
detail, please refer the description of registers.
Stage auto mode
At this mode, the F75377 provides automatic fan speed control related to temperature variation of
CPU/GPU or the system. The F75377 can provide two temperature boundaries and three intervals, and
each interval has its related fan speed PWM duty. All these values should be set by BIOS first. Take
figure as example. When temperature boundaries are set as 45 and 75°C and there are three intervals.
The related desired fan speed for each interval are 40%, 80% and 100% (fixed). When the temperature is
within 45~75’C, the fan speed will follow 80% PWM duty and that define in registers. It can be said that
the fan will be turned on with a specific speed set by BIOS and automatically controlled with the
temperature variation. The F75377 will take charge of all the fan speed control and need no software
support.
Temperature
PWM Duty
100%
75 Degree C
80%
40%
45 Degree C
Temperature
Fan Speed
Below is a sample for Stage auto mode: Set temperature as 60°C, 40°C and Duty as 100%, 70%, 50%
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PWM duty
100%
60 Degree C
hysteresis 57 Degree C
70%
50%
40 Degree C
Temp.
a
b
c
d
Fan Speed
Once temp. is under 40°C, the lowest fan speed keeps 50% PWM duty. Once temp. is over 40°C,60°C,
the fan speed will vary from 70% to 100% PWM duty and increase with temp. level. Once temp. keeps in
55°C, fan speed keeps in 70% PWM duty. If set the hysteresis as 3°C (default 4°C), once temp reduces
under 57°C, fan speed reduces to 70% PWM duty and stays there.
Linear auto mode
Otherwise, F75377 supports linear auto mode. Below has a example to describe this mode. More detail,
please refer the register description.
Set temperature as 70°C, 40°C and Duty as 100%, 70%, 40%
PWM duty
100%
70 Degree C
hysteresis 65 Degree C
70%
40 Degree C
40%
Temp.
Fan Speed
a
b
c
d
Once temp. is under 40°C, the lowest fan speed keeps 40% PWM duty. Once temp. is over 40°C and
under 70°C, the fan speed will vary from 40% to 70% PWM duty and linearly increase with temp.
variation. The temp.-fan speed monitoring and flash interval is 1sec. Once temp. goes over 70°C, fan
speed will directly increase to 100% PWM duty (full speed). If set the hysteresis as 5°C(default is 4°C),
once temp reduces under 65°C (not 70°C), fan speed reduces from 100% PWM duty and decrease
linearly with temp..
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6.6 PCB Layout Guide
PCB can be electrically noisy environments, and the F75377 is measuring very small voltage from the
remote sensor, so care must be taken to minimize noise which is occurred at the sensor inputs. The
following guideline should be taken to reduce the measurement error of the temperature sensors:
Place the F75377 as close as practical to the remote sensing diode. In noisy environments, such as a
computer main-board, the distance can be 4 to 8 inches. (typ). This length can be increased if the worst
noise sources are avoided. Noise sources generally include clock generators, CRTs, memory buses and
PCI/ISA bus etc.
Route the D+ and D- tracks close together, in parallel, with grounded guard tracks on each side. Provide
a ground plane under the tracks if possible. Do not route D+ & D- lines next to the deflection coil of the
CRT. And also don’t route the trace across fast digital signals which can easily induce bigger error.
GND
10MILS
DXP
10MILS
MINIMUM
DXN
10MILS
10MILS
GND
Use wide tracks to minimize inductance and reduce noise pickup. 10 mil track minimum width and
spacing is recommended.
Try to minimize the number of copper/solder joints, which can cause thermocouple effects. Where
copper/solder joints are used, make sure that they are in both the D+ and D- path and at the same
temperature. Thermocouple effects should not be a major problem as 1℃ corresponds to about 200µV. It
means that a copper-solder thermocouple exhibits 3µV/℃, and takes about 200µV of the voltage error at
D+ & D- to cause a 1℃ measurement error. Adding a few thermocouples causes a negligible error.
Place a 0.1µF bypass capacitor close to the VCC pin. In very noisy environments, place an external
2200pF input filter capacitors across D+, D- close to the F75377.
If the distance to the remote sensor is more than 8 inches, the use of twisted pair cable is recommended.
It will work up to around 6 to 12 feet.
Because the measurement technique uses switched current sources, excessive cable and/or filter
capacitance will affect the measurement accuracy. When using long cables, the filter capacitor may be
reduced or removed. Cable resistance can also induce errors. 1 Ω series resistance introduces about
0.5℃ error.
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7. Register Description
7.1 Configuration Register Index 01h
Bit
Name
R/W Default
Description
0
0
0
0
0
7
-
R
R
Reserved
6
5-4
3
-
-
-
-
Reserved
R
Reserved
R/W
R/W
Reserved (Fintek use only)
Reserved
2
Set one to enable startup of fan monitoring operations; a zero puts the
part in standby mode.
1
0
FAN_START
T_START
R/W
R/W
1
1
Set one to enable startup of temperature monitoring operations; a zero
puts the part in standby mode.
7.2
Configuration Register Index 0Ah
Bit
Name
R/W Default
Description
7
-
-
Reserved
0
0
6
5
4
SST_3V_EN
IIR_EN
R/W
Enable SST master to output 3 volt data
Set 1 to enable IIR for PECI reading.
The reading will be more stable.
Enable SST slave
R/W
R/W
1
0
SST_EN
PECI (Vtt) voltage select.
00: Vtt is 1.3V
3-2
1-0
VTT_SEL
-
R/W
R
0
0
01: Vtt is 1.2V
10: Vtt is 1.10V
11: Vtt is 1.00V
Reserved
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7.3
Bit
TCCA TEMP Register Index 0Ch
Name
R/W Default
Description
TCC Activation Temperature.
The absolute value of CPU temperature is calculated by the equation:
CPU_TEMP = TCCA_TEMP + PECI Reading.
7
TCCA_TEMP
R/W
0
The range of this register is 0 ~ 255.
7.4
SST Address Register Index 0Dh
Bit
Name
R/W Default
Description
0
7
-
R
Reserved
4C
6-0
SST_ADDR
R/W
SST slave address
7.5
PECI Slope Register Index 0Eh
Bit
Name
R/W Default
Description
0
0
7-4
-
R
Reserved
This register is used to control the PECI reading slope. See also
PECI_SCALE_ADD register.
000: The real value is the PECI reading.
001: The real value is (1 ± 1/2) PECI reading.
010: The real value is (1 ± 1/4) PECI reading.
011: The real value is (1 ± 1/8) PECI reading.
100: The real value is (1 ± 1/16) PECI reading.
101: The real value is (1 ± 1/32) PECI reading.
110: The real value is (1 ± 1/64) PECI reading.
111: The real value is (1 ± 1/128) PECI reading.
3-0
SCALE
R/W
7.6
Configuration Register Index 11h
Bit
Name
R/W Default
Description
0
7
ARA_EN
R/W
Enable I2C response ARA
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0
0
1
0
6
5
PME_INV
R/W
R/W
0: PME is low active 1:PME is high active
0: level mode 1: pulse mode (120us)
Global PME enable
PME_MODE
4
GLOBAL_PME_EN R/W
3-0
-
R
Reserved
7.7
External Device Address Register - Index 40h ~ 46h
Bit
Name
R/W Default
R/W
Description
7-0
DEV_ADDR
0
Device address of device0 ~ device6 (device 6 for PECI pin use, default
address is 40h)
7.8
External Device Index Register - Index 48h ~ 4Eh
Bit
Name
R/W Default
R/W
Description
7-0
DEV_INDEX
0
Device index of device0 ~ device6 (PECI 00h)
7.9
External Device Data Register - Index 4F
Bit
Name
R/W Default
R/W
Description
7-0
DEV_DATA
0
Data used to write to I2C devices or read from I2C devices
7.10 External Device Enable Register - Index 50h
Bit
7
Name
PECI_CRC_UPDATE R/W
DEV_EN R/W
R/W Default
Description
0: The reading of T1 will be updated with 8’hBB when PECI CRC error
1: The reading of T1 will not be updated when PECI CRC error
0
0
6-0
External device enable. (Bit mask)
Bit 0 for External device0
Bit 1 for External device2
……
7.11 External Device Select Register - Index 51h
Bit
7-6
5-0
Name
-
R/W Default
Description
R
-
Reserved
0:SST, 1:I2C (Bit 0 is for device0, Bit 1 is for device1…etc.)
DEV_SEL
R/W
0
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7.12 External Device Monitoring Frequency Select Register 1 - Index 52h
Bit
7-6
5-4
3-2
Name
R/W Default
Description
CYC_SEL3
CYC_SEL2
CYC_SEL1
R/W 2’b11 Select device monitoring cycle:
2’b11: 8hz
2’b10: 4hz
2’b01: 2hz
2’b00: 1hz
R/W 2’b11
R/W 2’b11
1-0
CYC_SEL0
R/W 2’b11
7.13 External Device Monitoring Frequency Select Register 2 - Index 53h
Bit
7-6
5-4
3-2
Name
R/W Default
Description
Reserved
CYC_SEL6
CYC_SEL5
R
0
Select device monitoring cycle:
2’b11: 8hz
R/W 2’b11
R/W 2’b11
2’b10: 4hz
2’b01: 2hz
2’b00: 1hz
1-0
CYC_SEL4
R/W 2’b11
7.14 I2C Master Control Register - Index 54h
Bit
7-6
0
Name
R/W Default
Description
I2C device address to be written or read
I2C_DEV_ADDR
WR_N / RD
R/W
R
0
0
Set 0 to start I2C byte write. Set 1 to start I2C byte read
7.15 Interface Control Register - Index 55h
Bit
7
Name
R/W Default
Description
RESET_PECI_EN R/W
0
0
0
0
0
0
Set this bit to reset PECI device, this bit will be cleared after reset
Set this bit to reset SST device, this bit will be cleared after reset
Reserved
6
RESET_SST_EN
-
R/W
R/W
5
4-2
1
RESET_DEV_SEL R/W
Select which SST device to be reset
PEC_EN
SR_EN
R/W
R/W
Enable PEC (CRC) of I2C devices
0
Enable repeat start of I2C devices
7.16 I2C Master Status Register - Index 56h
Bit
Name
R/W Default
Description
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5
4
3
2
1
0
ARBIT_LOST
NACK_ERR
WC
WC
WC
WC
WC
R
0
0
0
0
0
0
I2C master arbitration lost status
I2C master NACK with error status
I2C master timeout status
I2CM_TIMEOUT
I2CM_PEC_ERR
FINISH
I2C master PEC error status
Finish I2C byte read or byte write status
Bus busy status
BUS_BUSY
7.17 Fan Pin Function Select and Pin Status Register - Index 57h
Bit
7
Name
FANIN3
R/W Default
Description
R
R
R
R
-
-
-
-
Pin status
Pin status
Pin status
Pin status
6
FANIN2
5
FANCTRL3
FANCTRL2
4
0: FAN function
1: GPIO
3-0
FAN_PIN_MODE
R/W
0
7.18 Fan GPIO Function Control Register - Index 58h
Bit
7-4 FAN_GPOUT_MODE R/W
3-0 FAN_GPOUT R/W
Name
R/W Default
Description
1: Push Pull
0:Open drain
0
0
GPIO OUTPUT DATA
7.19 Temperature PME# Enable Register Index 60h (If DEV_BANK_EN is 0)
Bit
Name
R/W Default
Description
7-3
-
R/W
Reserved
0
0
0
0
2
1
0
EN_ T2_EXC_PME R/W
EN_ T1_EXC_PME R/W
A one enables the corresponding interrupt status bit for PME# interrupt.
A one enables the corresponding interrupt status bit for PME# interrupt
A one enables the corresponding interrupt status bit for PME# interrupt.
EN_L_EXC_PME
R/W
7.20 Temperature PME# Enable Register Index 60h (If DEV_BANK_EN is 1)
Bit
Name
R/W Default
Description
7-6
-
R/W
Reserved
A one enables the corresponding interrupt status bit for PME# interrupt
0
0
5
EN_ T8_ EXC_PME R/W
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4
3
2
1
0
EN_ L7_ EXC_PME R/W
EN_ T6_EXC_PME R/W
EN_ T5_EXC_PME R/W
EN_ T4_EXC_PME R/W
EN_T3_EXC_PME R/W
A one enables the corresponding interrupt status bit for PME# interrupt.
0
0
0
0
0
A one enables the corresponding interrupt status bit for PME# interrupt
A one enables the corresponding interrupt status bit for PME# interrupt.
A one enables the corresponding interrupt status bit for PME# interrupt
A one enables the corresponding interrupt status bit for PME# interrupt.
7.21 Temperature Interrupt Status Register Index 61h (If DEV_BANK_EN is 0)
Bit
Name
R/W Default
Description
A one indicates at least one of TEMP3~TEMP8 temperature sensor has
exceeded high limit or below the “high limit –hysteresis” limit. Write 1 to
clear this bit, write 0 will be ignored.
7
DEV_T_EXC_STS
R
R
0
0
0
6-3
2
-
Reserved
A one indicates TEMP2 temperature sensor has exceeded high limit or
below the “high limit –hysteresis” limit. Write 1 to clear this bit, write 0 will
be ignored.
T2_EXC _STS
R/W
A one indicates TEMP1 temperature sensor has exceeded high limit or
below the “high limit –hysteresis” limit. Write 1 to clear this bit, write 0 will
be ignored.
1
0
T1_EXC _STS
R/W
0
0
A one indicates temperature sensor (local temperature) has exceeded the
high limit or below the “high limit –hysteresis” limit. Write 1 to clear this bit,
write 0 will be ignored.
LOCAL_EXC _STS R/W
7.22 Temperature Interrupt Status Register Index 61h (If DEV_BANK_EN is 1)
Bit
Name
R/W Default
Description
7-6
-
R
0
Reserved
A one indicates TEMP8 temperature sensor has exceeded high limit or
below the “high limit –hysteresis” limit. Write 1 to clear this bit, write 0 will
be ignored.
5
4
T8_EXC _STS
T7_EXC _STS
R/W
0
A one indicates TEMP7 temperature sensor has exceeded high limit or
below the “high limit –hysteresis” limit. Write 1 to clear this bit, write 0 will
be ignored.
R/W
0
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A one indicates TEMP6 temperature sensor has exceeded high limit or
below the “high limit –hysteresis” limit. Write 1 to clear this bit, write 0 will
be ignored.
3
2
1
0
T6_EXC _STS
T5_EXC _STS
T4_EXC _STS
T3_EXC _STS
R/W
R/W
R/W
R/W
0
0
0
0
A one indicates TEMP5 temperature sensor has exceeded high limit or
below the “high limit –hysteresis” limit. Write 1 to clear this bit, write 0 will
be ignored.
A one indicates TEMP4 temperature sensor has exceeded high limit or
below the “high limit –hysteresis” limit. Write 1 to clear this bit, write 0 will
be ignored.
A one indicates TEMP3 temperature sensor has exceeded high limit or
below the “high limit –hysteresis” limit. Write 1 to clear this bit, write 0 will
be ignored.
7.23 Temperature Real Time Status Register Index 62h (If DEV_BANK_EN is 0)
Bit
Name
R/W Default
Description
Set when one of TEMP3~TEMP8 exceeds the high limit. Clear when the
TEMP3~TEMP8 is below the “high limit –hysteresis” temperature.
7
DEV_T_EXC
R
R
R
0
0
0
6-3
2
-
Reserved
Set when the TEMP2 exceeds the high limit. Clear when the TEMP2 is
below the “high limit –hysteresis” temperature.
T2_EXC
Set when the TEMP1 exceeds the high limit. Clear when the TEMP1 is
below the “high limit –hysteresis” temperature.
1
0
T1_EXC
R
R
0
0
Set when the local temperature exceeds the high limit. Clear when the
local temperature is below the “high limit –hysteresis” temperature.
LOCAL_EXC
7.24 Temperature Real Time Status Register Index 62h (If DEV_BANK_EN is 1)
Bit
Name
R/W Default
Description
7-6
-
R
Reserved
0
Set when the TEMP8 exceeds the high limit. Clear when the TEMP8 is
below the “high limit –hysteresis” temperature.
5
4
T8_EXC
T7_EXC
R
0
Set when the TEMP7 exceeds the high limit. Clear when the TEMP7 is
below the “high limit –hysteresis” temperature.
R
0
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Set when the TEMP6 exceeds the high limit. Clear when the TEMP6 is
below the “high limit –hysteresis” temperature.
3
2
1
0
T6_EXC
T5_EXC
T4_EXC
T3_EXC
R
R
R
R
0
0
0
0
Set when the TEMP5 exceeds the high limit. Clear when the TEMP5 is
below the “high limit –hysteresis” temperature.
Set when the TEMP4 exceeds the high limit. Clear when the TEMP4 is
below the “high limit –hysteresis” temperature.
Set when the TEMP3 exceeds the high limit. Clear when the TEMP3 is
below the “high limit –hysteresis” temperature.
7.25 External Device Bank Select Register Index 65h
Bit
7-1
0
Name
R/W Default
Description
-
R
0
0
Reserved
Set 1 to select external device bank
DEV_BANK_EN
R/W
7.26 Temperature Offset bank select Register -- Index 67h
Bit
Name
R/W Default
Description
7-2
Reserved
RO
--
0
0: CR68 is local temperature offset.
1: CR68 is temperature 1 offset.
2: CR68 is temperature 2 offset.
1-0
OFFSET_SEL
R/W
0
7.27 Temperature Offset Register -- Index 68h
Bit
Name
R/W Default
Description
0
0
7
-
RO
Reserved
Temperature offset register. The real temperature value will be added by
this offset and then will be put into temperature reading (Index 70h~75h).
The offset ranges from -64ºC to +63ºC.
7’b011_1111: mean temperature + 63;
6-0
T_OFFSET
R/W
7’b000_0001: mean temperature + 1;
7’b000_0000: mean temperature + 0;
7’b111_1111: mean temperature - 1;
7’b100_0000: mean temperature - 64;
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7.28 LOCAL and TEMP1 Limit Hystersis Select Register -- Index 6Ch (If DEV_BANK_EN is 0)
Bit
Name
R/W Default
Description
Limit hysteresis. (0~15 degree C)
7-4
TEMP1_HYS
R/W
R/W
0
0
Temperature and below the ( boundary – hysteresis ).
Limit hysteresis. (0~15 degree C)
3-0
LOCAL_HYS
Temperature and below the ( boundary – hysteresis ).
7.29 TEMP3 and TEMP4 Limit Hystersis Select Register -- Index 6Ch (If DEV_BANK_EN is 1)
Bit
Name
R/W Default
Description
Limit hysteresis. (0~15 degree C)
7-4
TEMP4_HYS
R/W
R/W
0
0
Temperature and below the ( boundary – hysteresis ).
Limit hysteresis. (0~15 degree C)
3-0
TEMP3_HYS
Temperature and below the ( boundary – hysteresis ).
7.30 TEMP2 Limit Hystersis Select Register -- Index 6Dh (If DEV_BANK_EN is 0)
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
Limit hysteresis. (0~15 degree C)
3-0
TEMP2_HYS
R/W
0
Temperature and below the ( boundary – hysteresis ).
7.31 TEMP5 and TEMP6 Limit Hystersis Select Register -- Index 6Dh (If DEV_BANK_EN is 1)
Bit
Name
R/W Default
Description
Limit hysteresis. (0~15 degree C)
0h
7-4
TEMP6_HYS
R/W
Temperature and below the ( boundary – hysteresis ).
Limit hysteresis. (0~15 degree C)
0h
3-0
TEMP5_HYS
R/W
Temperature and below the ( boundary – hysteresis ).
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7.32 TEMP7 and TEMP8 Limit Hystersis Select Register -- Index 6Eh (If DEV_BANK_EN is 1)
Bit
Name
R/W Default
Description
Limit hysteresis. (0~15 degree C)
0h
7-4
TEMP8_HYS
R/W
Temperature and below the ( boundary – hysteresis ).
Limit hysteresis. (0~15 degree C)
0h
3-0
TEMP7_HYS
R/W
Temperature and below the ( boundary – hysteresis ).
7.33 DIODE OPEN Status Register -- Index 6Fh (If DEV_BANK_EN is 0)
Bit
Name
R/W Default
Description
0
0
7-4
-
R
R
Reserved
4
3
2
1
0
DEV_OPEN
-
One of the diode of T3~T8 is open or short
Reserved
R
R
R
R
0
T2_DIODE_OPEN
T1_DIODE_OPEN
T0_DIODE_OPEN
0h
0h
0h
External diode 2 is open or short
External diode 1 is open or short
Internal diode 0 is open or short
7.34 DIODE OPEN Status Register -- Index 6Fh (If DEV_BANK_EN is 1)
Bit
Name
R/W Default
Description
Reserved
7-6
-
R
R
R
R
R
R
R
0
0
0
0
0
0
0
5
4
3
2
1
0
T8_DIODE_OPEN
T7_DIODE_OPEN
T6_DIODE_OPEN
T5_DIODE_OPEN
T4_DIODE_OPEN
T3_DIODE_OPEN
The diode of T8 is open or short
The diode of T7 is open or short
The diode of T6 is open or short
The diode of T5 is open or short
The diode of T4 is open or short
The diode of T3 is open or short
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7.35 Temperature Register Index 70h ~ 83h
Default
Value
Address
Attribute
Description
Local temperature[10:3] reading. The unit of reading is 1ºC.At the moment of
reading this register. (when open or short this byte will return 0)
70h
RO
--
CR71 bit7-bit5 are the Local temperature reading value[2:0]. The unit of reading
is 0.125ºC.
71h
72h
73h
74h
75h
RO
RO
RO
RO
RO
--
--
--
--
--
CR71 bit 0 is the sign bit of the Local temperature.
(when open or short this byte will return 1, “sign bit set to 1”)
Temperature 1 reading. The unit of reading is 1ºC.At the moment of reading this
register. (PECI TEMP reading Value)
CR73 bit7-bit5 are the temperature 1 reading value[2:0]. The unit of reading is
0.125ºC.
CR73 bit 0 is the sign bit of the temperature 1.
(when open or short this byte will return 1, “sign bit set to 1”)
Temperature 2 reading. The unit of reading is 1ºC.At the moment of reading this
register.
CR75 bit7-bit5 are the temperature 2 reading value[2:0]. The unit of reading is
0.125ºC.
CR75 bit 0 is the sign bit of the temperature 2.
(when open or short this byte will return 1, “sign bit set to 1”)
T3_read (External Device 0) The unit of reading is 1ºC.At the moment of reading
this register.
78h
79h
7Ah
7Bh
7C
RO
RO
--
--
T4_read (External Device 1) The unit of reading is 1ºC.At the moment of reading
this register.
T5_read (External Device 2) The unit of reading is 1ºC.At the moment of reading
this register.
T6_read (External Device 3) The unit of reading is 1ºC.At the moment of reading
this register.
T7_read (External Device 4) The unit of reading is 1ºC.At the moment of reading
this register.
RO
--
RO
--
RO
--
T8_read (External Device 5) The unit of reading is 1ºC.At the moment of reading
this register.
7D
RO
--
81h
81h
83h
83h
R/W
R/W
R/W
R/W
3Ch
55h
55h
55h
Local Temperature sensor high limit. The unit is 1ºC. (If DEV_BANK_EN is 0)
T3 high limit. The unit is 1ºC. (If DEV_BANK_EN is 1)
Temperature sensor 1 high limit. The unit is 1ºC. (If DEV_BANK_EN is 0)
T4 high limit. The unit is 1ºC. (If DEV_BANK_EN is 1)
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85h
85h
87h
89h
8Bh
R/W
R/W
R/W
R/W
R/W
55h
55h
55h
55h
55h
Temperature sensor 2 high limit. The unit is 1ºC. (When DEV_BANK_EN is 0)
T5 high limit. The unit is 1ºC. (If DEV_BANK_EN is 1)
T6 high limit. The unit is 1ºC. (If DEV_BANK_EN is 1)
T7 high limit. The unit is 1ºC. (If DEV_BANK_EN is 1)
T8 high limit. The unit is 1ºC. (If DEV_BANK_EN is 1)
7.36 Temperature Filter Select Register -- Index 8Eh
Bit
Name
R/W Default
Description
7-6
-
R
Reserved
0
The queue time for second filter to quickly update values.
00: 8 times.
5-4
3-2
IIR-QUEUR2
IIR-QUEUR1
R/W
01: 16 times. (default).
1h
10: 24 times.
11: 32 times.
The queue time for second filter to quickly update values.
00: 8 times.
R/W
01: 16 times. (default).
1h
1h
10: 24 times.
11: 32 times.
The queue time for second filter to quickly update values.
00: 8 times.
1-0 IIR-QUEUR-LOCAL R/W
01: 16 times. (default).
10: 24 times.
11: 32 times.
7.37 FAN PME# Enable Register Index 90h
Bit
Name
R/W Default
Description
7-3
-
R
Reserved
A one enables the corresponding interrupt status bit for PME# interrupt.
0
0
2
EN_FAN3_PME
R/W
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1
0
EN_FAN2_PME
EN_FAN1_PME
R/W
R/W
A one enables the corresponding interrupt status bit for PME# interrupt
A one enables the corresponding interrupt status bit for PME# interrupt.
0
0
7.38 FAN Interrupt Status Register Index 91h
Bit
Name
R/W Default
Description
0
7-3 Reserved
RO
Reserved
This bit is set when the fan3 count exceeds the count limit. Write 1 to clear
this bit, write 0 will be ignored.
2
1
0
FAN3_STS
R/W
--
This bit is set when the fan2 count exceeds the count limit. Write 1 to clear
this bit, write 0 will be ignored.
FAN2_STS
FAN1_STS
R/W
R/W
--
--
This bit is set when the fan1 count exceeds the count limit. Write 1 to clear
this bit, write 0 will be ignored.
7.39 FAN Real Time Status Register Index 92h
Bit
Name
R/W Default
Description
0
7-3
Reserved
--
Reserved
This bit set to high mean that fan3 count can’t meet expect count over than
SMI time(CR9F) or when duty not zero but fan stop over then 3 sec.
This bit set to high mean that fan2 count can’t meet expect count over than
SMI time(CR9F) or when duty not zero but fan stop over then 3 sec.
This bit set to high mean that fan1 count can’t meet expect count over than
SMI time(CR9F) or when duty not zero but fan stop over then 3 sec.
2
1
0
FAN3_EXC
FAN2_EXC
FAN1_EXC
RO
--
RO
RO
--
--
7.40 Fan Type Select Register -- Index 94h
Bit
Name
R/W Default
Description
7-6
-
R/W
Reserved
0
00: Output PWM mode (push pull) to control fans.
01 Reserved
5-4
FAN3_TYPE
R/W
2’b10
10: Output PWM mode (open drain) to control Intel 4-wire fans.
11: Reserved.
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00: Output PWM mode (push pull) to control fans.
01: Reserved
3-2
1-0
FAN2_TYPE
FAN1_TYPE
R/W
R/W
2’b10
2’b10
10: Output PWM mode (open drain) to control Intel 4-wire fans.
11: Reserved.
00: Output PWM mode (push pull) to control fans.
01: Reserved
10: Output PWM mode (open drain) to control Intel 4-wire fans.
11: Reserved.
7.41 Fan mode Select Register -- Index 96h
Bit
Name
R/W Default
Description
7-6
-
R/W
Reserved
0
00: Auto fan speed control, fan speed will follow different temperature by
different RPM
5-4
3-2
1-0
FAN3_MODE
FAN2_MODE
FAN1_MODE
R/W
1h
01: Auto fan speed control, fan speed will follow different temperature by
different duty cycle
10, 11: Reserved
00: Auto fan speed control, fan speed will follow different temperature by
different RPM.
R/W
R/W
1h
1h
01: Auto fan speed control, fan speed will follow different temperature by
different duty cycle.
10, 11: Reserved
00: Auto fan speed control, fan speed will follow different temperature by
different RPM.
01: Auto fan speed control, fan speed will follow different temperature by
different duty cycle.
10, 11: Reserved
7.42 Auto Fan1 and Fan2 Boundary Hystersis Select Register -- Index 98h
Bit
Name
R/W Default
Description
0000: Boundary hysteresis. (0~15 degree C)
7-4
FAN2_HYS
R/W
R/W
Segment will change when the temperature over the boundary
temperature and below the ( boundary – hysteresis ).
4h
4h
0000: Boundary hysteresis. (0~15 degree C)
3-0
FAN1_HYS
Segment will change when the temperature over the boundary
temperature and below the (boundary – hysteresis ).
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7.43 Auto Fan3 and Fan4 Boundary Hystersis Select Register -- Index 99h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0000: Boundary hysteresis. (0~15 degree C)
0
3-0
FAN3_HYS
R/W
Segment will change when the temperature over the boundary
temperature and below the (boundary – hysteresis ).
2h
7.44 Fan1~Fan3 Up Fan Duty Change Rate Select Register -- Index 9A
Bit
Name
R/W Default
Description
7-6
-
R
Reserved
0h
Fan3 duty increasing update rate
00: 2.5Hz
01: 5Hz (default)
10: 10Hz
5-4 FAN3_U_RATE_SEL R/W
3-2 FAN2_U_RATE_SEL R/W
1-0 FAN1_U_RATE_SEL R/W
1h
11: 20Hz
Fan2 duty increasing update rate
00: 2.5Hz
01: 5Hz (default)
10: 10Hz
1h
1h
11: 20Hz
Fan1 duty increasing update rate
00: 2.5Hz
01: 5Hz (default)
10: 10Hz
11: 20Hz
7.45 Fan1~Fan3 Down Fan Duty Change Rate Select Register -- Index 9Bh
Bit
Name
R/W Default
Description
0h
7-6
-
R
Reserved
Fan3 duty decreasing update rate
00: 2.5Hz
01: 5Hz (default)
10: 10Hz
5-4 FAN3_D_RATE_SEL R/W
1h
11: 20Hz
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Fan2 duty decreasing update rate
00: 2.5Hz
01: 5Hz (default)
10: 10Hz
3-2 FAN2_D_RATE_SEL R/W
1-0 FAN1_D_RATE_SEL R/W
1h
1h
11: 20Hz
Fan1 duty decreasing update rate
00: 2.5Hz
01: 5Hz (default)
10: 10Hz
11: 20Hz
7.46 FAN1 and FAN2 START UP DUTY-CYCLE/VOLTAGE Index 9Ch
Bit
Name
R/W Default
Description
When fan start, the FAN_CTRL2 will increase duty-cycle from 0 to this
(value x 8) directly. And if fan speed is down, the FAN_CTRL 2 will
decrease duty-cycle to 0 when the PWM duty cycle is less than this (value
x 4).
7-4
FAN2_MIN_DUTY
R/W
R/W
5h
5h
When fan start, the FAN_CTRL 1 will increase duty-cycle from 0 to this
(value x 8 directly. And if fan speed is down, the FAN_CTRL 1 will
decrease duty-cycle to 0 when the PWM duty cycle is less than this (value
x 4).
3-0
FAN1_MIN_DUTY
7.47 FAN3 and FAN4 START UP DUTY-CYCLE/VOLTAGE Index 9Dh
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
When fan start, the FAN_CTRL 3 will increase duty-cycle from 0 to this
(value x 8 directly. And if fan speed is down, the FAN_CTRL 3 will
decrease duty-cycle to 0 when the PWM duty cycle is less than this (value
x 4).
3-0
FAN3_MIN_DUTY
R/W
5h
7.48 Fan SMI Time Register -- Index 9Fh
Bit
Name
R/W Default
--
Description
7-4
Reserved
--
Reservd
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This register determines the time of fan fault. The condition to cause fan
fault event is:
When PWM_Duty reaches FFh, if the fan speed count can’t reach the fan
expect count in time.
3-0
FAN_FAULT_TIME R/W
The unit of this register is 1 second. The default value is 11 seconds.
(Set to 0 , means 1 seconds. ; Set to 1, means 2 seconds.
Set to 2, means 3 seconds. …. )
ah
Another condition to cause fan fault event is fan stop and the PWM duty is
greater than the minimum duty programmed by the register index 9C-9Dh.
7.49 Fan1 Index A0h- AFh
Default
Value
Description
Address
Attribute
FAN1 count reading (MSB). At the moment of reading this register, the LSB will
be latched. This will prevent from data updating when reading. To read the fan
count correctly, read MSB first and followed read the LSB.
A0h
A1h
RO
RO
8’h0f
8’hff
FAN1 count reading (LSB).
RPM mode(CR96 bit0=0):
FAN1 expect speed count value (MSB), in auto fan mode (CR96 bit1Î0) this
register is auto updated by hardware.
Duty mode(CR96 bit0=1):
A2h
R/W
8’h00
This byte is reserved byte.
RPM mode(CR96 bit0=0):
FAN1 expect speed count value (LSB) or expect PWM duty, in auto fan mode
this register is auto updated by hardware and read only.
Duty mode(CR96 bit0=1):
A3h
R/W
8’h01
The Value programming in this byte is duty value. In auto fan mode(CR96
bit1Î0) this register is updated by hardware.
Ex: 5Î 5*100/255 %
255 Î 100%
FAN1 full speed count reading (MSB). At the moment of reading this register,
the LSB will be latched. This will prevent from data updating when reading. To
read the fan count correctly, read MSB first and followed read the LSB.
A4h
A5h
R/W
R/W
8’h03
8’hff
FAN1 full speed count reading (LSB).
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7.50 Fan2 Index B0h- BFh
Default
Value
Description
Address
Attribute
FAN2 count reading (MSB). At the moment of reading this register, the LSB will
be latched. This will prevent from data updating when reading. To read the fan
count correctly, read MSB first and followed read the LSB.
B0h
B1h
RO
RO
8’h0f
8’hff
FAN2 count reading (LSB).
RPM mode(CR96 bit2=0):
FAN2 expect speed count value (MSB), in auto fan mode(CR96 bit3Î0) this
register is auto updated by hardware.
Duty mode(CR96 bit2=1):
B2h
R/W
8’h00
This byte is reserved byte.
RPM mode(CR96 bit2=0):
FAN2 expect speed count value (LSB) or expect PWM duty , in auto fan mode
this register is auto updated by hardware and read only.
Duty mode(CR96 bit2=1):
B3h
R/W
8’h01
The Value programming in this byte is duty value. In auto fan mode(CR96
bit3Î0) this register is updated by hardware.
Ex: 5Î 5*100/255 %
255 Î 100%
FAN2 full speed count reading (MSB). At the moment of reading this register,
the LSB will be latched. This will prevent from data updating when reading. To
read the fan count correctly, read MSB first and followed read the LSB.
B4h
B5h
R/W
R/W
8’h03
8’hff
FAN2 full speed count reading (LSB).
7.51 Fan3 Index C0h- CFh
Default
Value
Description
Address
Attribute
FAN3 count reading (MSB). At the moment of reading this register, the LSB will
be latched. This will prevent from data updating when reading. To read the fan
count correctly, read MSB first and followed read the LSB.
C0h
C1h
RO
RO
8’h0F
8’hff
FAN3 count reading (LSB).
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RPM mode(CR96 bit4=0):
FAN3 expect speed count value (MSB), in auto fan mode(CR96 bit5Î0) this
register is auto updated by hardware.
C2h
C3h
R/W
R/W
8’h00
8’h01
Duty mode(CR96 bit4=1):
This byte is reserved byte.
RPM mode(CR96 bit4=0):
FAN3 expect speed count value (LSB) or expect PWM duty , in auto fan mode
this register is auto updated by hardware and read only.
Duty mode(CR96 bit4=1):
The Value programming in this byte is duty value. In auto fan mode(CR96
bit5Î0) this register is updated by hardware.
Ex: 5Î 5*100/255 %
255 Î 100%
FAN3 full speed count reading (MSB). At the moment of reading this register,
the LSB will be latched. This will prevent from data updating when reading. To
read the fan count correctly, read MSB first and followed read the LSB.
C4h
C5h
R/W
R/W
8’h03
8’hff
FAN3 full speed count reading (LSB).
7.52 FAN1 Control Register – Index D0h
Bit
Name
R/W Default
Description
Set 1 that fan speed will keep current temp. status before system re-boot
up.
7
FAN1LOAD_BEFORE R/W
0
6
5
FAN1_NO_STOP
Reserved
R/W
R/W
R/W
R
Set 1 that FAN1 will not stop but keep at FAN1_MIN_DUTY x 4
0
0
0
0
Reserved
4
FAN1_INTP_EN
-
Set 1 will enable the interpolation of the fan expect table.
Reserved
3-0
7.53 FAN2 Control Register – Index D1h
Bit
Name
R/W Default
Description
0
Set 1 that fan speed will keep current temp. status before system re-boot
up.
7
FAN2LOAD_BEFORE R/W
0
0
0
6
5
4
FAN2_NO_STOP
Reserved
R/W
R/W
R/W
Set 1 that FAN2 will not stop but keep at FAN1_MIN_DUTY x 4
Reserved
FAN2_INTP_EN
Set 1 will enable the interpolation of the fan expect table.
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3-0
-
R
Reserved
0
7.54 FAN3 Control Register – Index D2h
Bit
Name
R/W Default
Description
0
Set 1 that fan speed will keep current temp. status before system re-boot
7
FAN3LOAD_BEFORE R/W
up.
0
0
0
6
5
FAN3_NO_STOP
Reserved
R/W
R/W
R/W
R
Set 1 that FAN2 will not stop but keep at FAN1_MIN_DUTY x 4
Reserved
4
FAN3_INTP_EN
-
Set 1 will enable the interpolation of the fan expect table.
Reserved
3-0
0
7.55 FAN Control Register – Index D3h
Bit
Name
R/W Default
Description
7-3
-
R
Reserved
0
0: fan3 speed will decide by temperature weighting
1: fan3 speed will decide by follow the fastest fan speed
0: fan3 speed will decide by temperature weighting
1: fan3 speed will decide by follow the fastest fan speed
0: fan3 speed will decide by temperature weighting
1: fan3 speed will decide by follow the fastest fan speed
2
1
0
FAN3_MAX_SEL
FAN2_MAX_SEL
FAN1_MAX_SEL
R/W
0
R/W
R/W
0
0
7.56 Fan table bank select – Index D5h
Bit
Name
R/W Default
Description
7-4
Reserved
R
Reserved
0
0: T0 table and weighting setting
1: T1 table and weighting setting
2: T2 table and weighting setting
……
3-0
FAN_BANK_SEL
R/W
0
…..
7: T7 table and weighting setting
8: T8 table and weighting setting
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FAN_BANK_SEL=0x00
7.57 FAN T0 Control Register 1 – Index D6h
Bit
Name
R/W Default
Description
7-3
-
R
Reserved
0
Set 1 that FAN speed will jump to SEC1SPEED when temperature over
BOUND1TEMP CRD9.
Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A)
when temperature over BOUND1TEMP CRD9..
Set 1 that FAN speed will jump to SEC2SPEED when temperature under
BOUND1TEMP Hystersis.
1
0
T0_JUMP_HIGH_EN
T0_JUMP_LOW_EN
R/W
1
R/W
1
Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B)
when temperature under FAN1 Boundary Hystersis.
7.58 FAN T0 Control Register 2 – Index D7h
Bit
Name
R/W Default
Description
Temperature 0 to FAN2 weight setting register:
0: T0 independent with FAN2.
1: Proportion of T0 to FAN2 is 1/15
2: Proportion of T0 to FAN2 is 2/15.
…..
7-4
FAN2_WEIGHT
R/W
R/W
0
0
F: Proportion of T0 to FAN2 is 15/15
Temperature 0 to FAN1 weight setting register:
0: T0 independent with FAN1.
1: Proportion of T0 to FAN1 is 1/15
2: Proportion of T0 to FAN1 is 2/15.
…..
3-0
FAN1_WEIGHT
F: Proportion of T0 to FAN1 is 15/15
7.59 FAN T0 Control Register 3 – Index D8h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
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Temperature 0 to FAN3 weight setting register:
0: T0 independent with FAN3.
1: Proportion of T0 to FAN3 is 1/15
2: Proportion of T0 to FAN3 is 2/15.
…..
3-0
FAN3_WEIGHT
R/W
Fh
F: Proportion of T0 to FAN3 is 15/15
7.60 FAN T0 Control Register 4 – Index D9h
Bit
Name
R/W Default
Description
The 1st BOUNDARY temperature for T0 in temperature mode.
When temperature is exceed this boundary, FAN expect value will load
from segment 1 register (index DC)h.
46h
R/W
7-0
BOUND1TEMP
(70’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 2 register (index DDh).
7.61 FAN T0 Control Register 5 – Index DAh
Bit
Name
R/W Default
Description
The 2st BOUNDARY temperature for T0 in temperature mode.
When temperature is exceed this boundary, FAN1 expect value will load
from segment 2 register (index DDh).
28h
R/W
7-0
BOUND2TEMP
(40’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 3 register (index DEh).
7.62 FAN T0 Control Register 6 – Index DCh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
32
Ex:
Expecstpeed=
×Fullspeeed
32+value
FFh
R/W
7-0
SEC1SPEED
100%:full speed: User must set this register to 0.
(100%)
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
X% full speed: The value programming in this byte is Î (100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
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7.63 FAN T0 Control Register 7 – Index DDh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
d9h
R/W
7-0
SEC2SPEED
(85%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.64 FAN T0 Control Register 8 – Index DEh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
4ch
R/W
7-0
SEC3SPEED
(30%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
FAN_BANK_SEL=0x01
7.65 FAN T1 Control Register 1 – Index D6h
Bit
Name
R/W Default
Description
7-3
-
R
Reserved
0
Set 1 that FAN speed will jump to SEC1SPEED when temperature over
BOUND1TEMP CRD9.
1
0
T1_JUMP_HIGH_EN
T1_JUMP_LOW_EN
R/W
1
Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A)
when temperature over BOUND1TEMP CRD9..
Set 1 that FAN speed will jump to SEC2SPEED when temperature under
BOUND1TEMP Hystersis.
Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B)
when temperature under FAN1 Boundary Hystersis.
R/W
1
7.66 FAN T1 Control Register 2 – Index D7h
Bit
Name
R/W Default
Description
42
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Temperature 1 to FAN2 weight setting register:
0: T0 independent with FAN2.
1: Proportion of T1 to FAN2 is 1/15
2: Proportion of T1 to FAN2 is 2/15.
…..
7-4
3-0
FAN2_WEIGHT
FAN1_WEIGHT
R/W
R/W
0
F: Proportion of T1 to FAN2 is 15/15
Temperature 1 to FAN1 weight setting register:
0: T1 independent with FAN1.
1: Proportion of T1 to FAN1 is 1/15
2: Proportion of T1 to FAN1 is 2/15.
…..
Fh
F: Proportion of T1 to FAN1 is 15/15
7.67 FAN T1 Control Register 3 – Index D8h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
0
Temperature 1 to FAN3 weight setting register:
0: T1 independent with FAN3.
1: Proportion of T1 to FAN3 is 1/15
2: Proportion of T1 to FAN3 is 2/15.
…..
3-0
FAN3_WEIGHT
R/W
F: Proportion of T1 to FAN3 is 15/15
7.68 FAN T1 Control Register 4 – Index D9h
Bit
Name
R/W Default
Description
The 1st BOUNDARY temperature for T1 in temperature mode.
When temperature is exceed this boundary, FAN expect value will load
from segment 1 register (index DC)h.
46h
R/W
7-0
BOUND1TEMP
(70’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 2 register (index DDh).
43
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7.69 FAN T1 Control Register 5 – Index DAh
Bit
Name
R/W Default
Description
The 2st BOUNDARY temperature for T1 in temperature mode.
When temperature is exceed this boundary, FAN1 expect value will load
from segment 2 register (index DDh).
28h
R/W
7-0
BOUND2TEMP
(40’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 3 register (index DEh).
7.70 FAN T1 Control Register 6 – Index DCh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
32
Ex:
Expecstpeed=
×Fullspeeed
32+value
FFh
R/W
7-0
SEC1SPEED
100%:full speed: User must set this register to 0.
(100%)
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
X% full speed: The value programming in this byte is Î (100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.71 FAN T1 Control Register 7 – Index DDh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
d9h
R/W
7-0
SEC2SPEED
(85%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.72 FAN T1 Control Register 8 – Index DEh
Bit
Name
R/W Default
Description
44
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V0.12P
F75377
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
4ch
7-0
SEC3SPEED
R/W
(30%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
FAN_BANK_SEL=0x02
7.73 FAN T2 Control Register 1 – Index D6h
Bit
Name
R/W Default
Description
7-3
-
R
Reserved
0
Set 1 that FAN speed will jump to SEC1SPEED when temperature over
BOUND1TEMP CRD9.
Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A)
when temperature over BOUND1TEMP CRD9..
Set 1 that FAN speed will jump to SEC2SPEED when temperature under
BOUND1TEMP Hystersis.
1
0
T2_JUMP_HIGH_EN
T2_JUMP_LOW_EN
R/W
1
R/W
1
Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B)
when temperature under FAN1 Boundary Hystersis.
7.74 FAN T2 Control Register 2 – Index D7h
Bit
Name
R/W Default
Description
Temperature 2 to FAN2 weight setting register:
0: T2 independent with FAN2.
1: Proportion of T2 to FAN2 is 1/15
2: Proportion of T2 to FAN2 is 2/15.
…..
7-4
FAN2_WEIGHT
R/W
R/W
Fh
F: Proportion of T2 to FAN2 is 15/15
Temperature 2 to FAN1 weight setting register:
0: T2 independent with FAN1.
1: Proportion of T2 to FAN1 is 1/15
2: Proportion of T2 to FAN1 is 2/15.
…..
3-0
FAN1_WEIGHT
0
F: Proportion of T2 to FAN1 is 15/15
45
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7.75 FAN T2 Control Register 3 – Index D8h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
0
Temperature 2 to FAN3 weight setting register:
0: T2 independent with FAN3.
1: Proportion of T2 to FAN3 is 1/15
2: Proportion of T2 to FAN3 is 2/15.
…..
3-0
FAN3_WEIGHT
R/W
F: Proportion of T2 to FAN3 is 15/15
7.76 FAN T2 Control Register 4 – Index D9h
Bit
Name
R/W Default
Description
The 1st BOUNDARY temperature for T2 in temperature mode.
When temperature is exceed this boundary, FAN expect value will load
from segment 1 register (index DC)h.
46h
R/W
7-0
BOUND1TEMP
(70’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 2 register (index DDh).
7.77 FAN T2 Control Register 5 – Index DAh
Bit
Name
R/W Default
Description
The 2st BOUNDARY temperature for T2 in temperature mode.
When temperature is exceed this boundary, FAN1 expect value will load
from segment 2 register (index DDh).
28h
R/W
7-0
BOUND2TEMP
(40’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 3 register (index DEh).
7.78 FAN T2 Control Register 6 – Index DCh
Bit
Name
R/W Default
Description
46
March., 2008
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F75377
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
32
Ex:
Expecstpeed=
×Fullspeeed
32+value
FFh
(100%)
7-0
SEC1SPEED
R/W
100%:full speed: User must set this register to 0.
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
X% full speed: The value programming in this byte is Î (100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.79 FAN T2 Control Register 7 – Index DDh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
d9h
R/W
7-0
SEC2SPEED
(85%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.80 FAN T2 Control Register 8 – Index DEh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
4ch
R/W
7-0
SEC3SPEED
(30%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
FAN_BANK_SEL=0x03
7.81 FAN T3 Control Register 1 – Index D6h
Bit
Name
R/W Default
Description
7-3
-
R
Reserved
0
Set 1 that FAN speed will jump to SEC1SPEED when temperature over
BOUND1TEMP CRD9.
Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A)
when temperature over BOUND1TEMP CRD9..
1
T3_JUMP_HIGH_EN
R/W
0
47
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F75377
Set 1 that FAN speed will jump to SEC2SPEED when temperature under
BOUND1TEMP Hystersis.
Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B)
when temperature under FAN1 Boundary Hystersis.
0
T3_JUMP_LOW_EN
R/W
0
7.82 FAN T3 Control Register 2 – Index D7h
Bit
Name
R/W Default
Description
Temperature 3 to FAN2 weight setting register:
0: T3 independent with FAN2.
1: Proportion of T3 to FAN2 is 1/15
2: Proportion of T3 to FAN2 is 2/15.
…..
7-4
FAN2_WEIGHT
R/W
R/W
0
0
F: Proportion of T3 to FAN2 is 15/15
Temperature 3 to FAN1 weight setting register:
0: T3 independent with FAN1.
1: Proportion of T3 to FAN1 is 1/15
2: Proportion of T3 to FAN1 is 2/15.
…..
3-0
FAN1_WEIGHT
F: Proportion of T3 to FAN1 is 15/15
7.83 FAN T3 Control Register 3 – Index D8h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
0
Temperature 3 to FAN3 weight setting register:
0: T3 independent with FAN3.
1: Proportion of T3 to FAN3 is 1/15
2: Proportion of T3 to FAN3 is 2/15.
…..
3-0
FAN3_WEIGHT
R/W
F: Proportion of T3 to FAN3 is 15/15
7.84 FAN T3 Control Register 4 – Index D9h
Bit
Name
R/W Default
Description
48
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V0.12P
F75377
The 1st BOUNDARY temperature for T3 in temperature mode.
When temperature is exceed this boundary, FAN expect value will load
from segment 1 register (index DC)h.
When temperature is below this boundary – hysteresis, FAN expect value
46h
(70’C)
7-0
BOUND1TEMP
R/W
will load from segment 2 register (index DDh).
7.85 FAN T3 Control Register 5 – Index DAh
Bit
Name
R/W Default
Description
The 2st BOUNDARY temperature for T3 in temperature mode.
When temperature is exceed this boundary, FAN1 expect value will load
from segment 2 register (index DDh).
28h
R/W
7-0
BOUND2TEMP
(40’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 3 register (index DEh).
7.86 FAN T3 Control Register 6 – Index DCh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
32
Ex:
Expecstpeed=
×Fullspeeed
32+value
FFh
R/W
7-0
SEC1SPEED
100%:full speed: User must set this register to 0.
(100%)
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
X% full speed: The value programming in this byte is Î (100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.87 FAN T3 Control Register 7 – Index DDh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
d9h
R/W
7-0
SEC2SPEED
(85%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
49
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F75377
7.88 FAN T3 Control Register 8 – Index DEh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
4ch
R/W
7-0
SEC3SPEED
(30%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
FAN_BANK_SEL=0x04
7.89 FAN T4 Control Register 1 – Index D6h
Bit
Name
R/W Default
Description
7-3
-
R
Reserved
0
Set 1 that FAN speed will jump to SEC1SPEED when temperature over
BOUND1TEMP CRD9.
Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A)
when temperature over BOUND1TEMP CRD9..
Set 1 that FAN speed will jump to SEC2SPEED when temperature under
BOUND1TEMP Hystersis.
1
0
T4_JUMP_HIGH_EN
T4_JUMP_LOW_EN
R/W
0
R/W
0
Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B)
when temperature under FAN1 Boundary Hystersis.
7.90 FAN T4 Control Register 2 – Index D7h
Bit
Name
R/W Default
Description
Temperature 4 to FAN2 weight setting register:
0: T4 independent with FAN2.
1: Proportion of T4 to FAN2 is 1/15
2: Proportion of T4 to FAN2 is 2/15.
…..
7-4
FAN2_WEIGHT
R/W
0
F: Proportion of T4 to FAN2 is 15/15
50
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F75377
Temperature 4 to FAN1 weight setting register:
0: T4 independent with FAN1.
1: Proportion of T4 to FAN1 is 1/15
2: Proportion of T4 to FAN1 is 2/15.
…..
3-0
FAN1_WEIGHT
R/W
0
F: Proportion of T4 to FAN1 is 15/15
7.91 FAN T4 Control Register 3 – Index D8h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
0
Temperature 4 to FAN3 weight setting register:
0: T4 independent with FAN3.
1: Proportion of T4 to FAN3 is 1/15
2: Proportion of T4 to FAN3 is 2/15.
…..
3-0
FAN3_WEIGHT
R/W
F: Proportion of T4 to FAN3 is 15/15
7.92 FAN T4 Control Register 4 – Index D9h
Bit
Name
R/W Default
Description
The 1st BOUNDARY temperature for T4 in temperature mode.
When temperature is exceed this boundary, FAN expect value will load
from segment 1 register (index DC)h.
46h
R/W
7-0
BOUND1TEMP
(70’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 2 register (index DDh).
7.93 FAN T4 Control Register 5 – Index DAh
Bit
Name
R/W Default
Description
The 2st BOUNDARY temperature for T4 in temperature mode.
When temperature is exceed this boundary, FAN1 expect value will load
from segment 2 register (index DDh).
28h
R/W
7-0
BOUND2TEMP
(40’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 3 register (index DEh).
51
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7.94 FAN T4 Control Register 6 – Index DCh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
32
Ex:
Expecstpeed=
×Fullspeeed
32+value
FFh
R/W
7-0
SEC1SPEED
100%:full speed: User must set this register to 0.
(100%)
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
X% full speed: The value programming in this byte is Î (100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.95 FAN T4 Control Register 7 – Index DDh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
d9h
R/W
7-0
SEC2SPEED
(85%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.96 FAN T4 Control Register 8 – Index DEh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
4ch
R/W
7-0
SEC3SPEED
(30%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
FAN_BANK_SEL=0x05
7.97 FAN T5 Control Register 1 – Index D6h
Bit
Name
R/W Default
Description
52
March., 2008
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F75377
7-3
1
-
R
Reserved
0
0
Set 1 that FAN speed will jump to SEC1SPEED when temperature over
BOUND1TEMP CRD9.
Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A)
when temperature over BOUND1TEMP CRD9..
T5_JUMP_HIGH_EN
R/W
Set 1 that FAN speed will jump to SEC2SPEED when temperature under
BOUND1TEMP Hystersis.
Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B)
when temperature under FAN1 Boundary Hystersis.
0
T5_JUMP_LOW_EN
R/W
0
7.98 FAN T5 Control Register 2 – Index D7h
Bit
Name
R/W Default
Description
Temperature 5 to FAN2 weight setting register:
0: T5 independent with FAN2.
1: Proportion of T5 to FAN2 is 1/15
2: Proportion of T5 to FAN2 is 2/15.
…..
7-4
FAN2_WEIGHT
R/W
R/W
0
0
F: Proportion of T5 to FAN2 is 15/15
Temperature 5 to FAN1 weight setting register:
0: T5 independent with FAN1.
1: Proportion of T5 to FAN1 is 1/15
2: Proportion of T5 to FAN1 is 2/15.
…..
3-0
FAN1_WEIGHT
F: Proportion of T5 to FAN1 is 15/15
7.99 FAN T5 Control Register 3 – Index D8h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
0
Temperature 5 to FAN3 weight setting register:
0: T5 independent with FAN3.
1: Proportion of T5 to FAN3 is 1/15
2: Proportion of T5 to FAN3 is 2/15.
…..
3-0
FAN3_WEIGHT
R/W
F: Proportion of T5 to FAN3 is 15/15
53
March., 2008
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F75377
7.100 FAN T5 Control Register 4 – Index D9h
Bit
Name
R/W Default
Description
The 1st BOUNDARY temperature for T5 in temperature mode.
When temperature is exceed this boundary, FAN expect value will load
from segment 1 register (index DC)h.
46h
R/W
7-0
BOUND1TEMP
(70’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 2 register (index DDh).
7.101 FAN T5 Control Register 5 – Index DAh
Bit
Name
R/W Default
Description
The 2st BOUNDARY temperature for T5 in temperature mode.
When temperature is exceed this boundary, FAN1 expect value will load
from segment 2 register (index DDh).
28h
R/W
7-0
BOUND2TEMP
(40’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 3 register (index DEh).
7.102 FAN T5 Control Register 6 – Index DCh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
32
Ex:
Expecstpeed=
×Fullspeeed
32+value
FFh
R/W
7-0
SEC1SPEED
100%:full speed: User must set this register to 0.
(100%)
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
X% full speed: The value programming in this byte is Î (100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.103 FAN T5 Control Register 7 – Index DDh
Bit
Name
R/W Default
Description
54
March., 2008
V0.12P
F75377
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
d9h
7-0
SEC2SPEED
R/W
(85%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.104 FAN T5 Control Register 8 – Index DEh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
4ch
R/W
7-0
SEC3SPEED
(30%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
FAN_BANK_SEL=0x06
7.105 FAN T6 Control Register 1 – Index D6h
Bit
Name
R/W Default
Description
7-3
-
R
Reserved
0
Set 1 that FAN speed will jump to SEC1SPEED when temperature over
BOUND1TEMP CRD9.
Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A)
when temperature over BOUND1TEMP CRD9..
Set 1 that FAN speed will jump to SEC2SPEED when temperature under
BOUND1TEMP Hystersis.
1
0
T6_JUMP_HIGH_EN
T6_JUMP_LOW_EN
R/W
0
R/W
0
Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B)
when temperature under FAN1 Boundary Hystersis.
7.106 FAN T6 Control Register 2 – Index D7h
Bit
Name
R/W Default
Description
Temperature 6 to FAN2 weight setting register:
0: T6 independent with FAN2.
1: Proportion of T6 to FAN2 is 1/15
2: Proportion of T6 to FAN2 is 2/15.
…..
7-4
FAN2_WEIGHT
R/W
0
F: Proportion of T6 to FAN2 is 15/15
55
March., 2008
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F75377
Temperature 6 to FAN2 weight setting register:
0: T6 independent with FAN1.
1: Proportion of T6 to FAN1 is 1/15
2: Proportion of T6 to FAN1 is 2/15.
…..
3-0
FAN1_WEIGHT
R/W
0
F: Proportion of T6 to FAN1 is 15/15
7.107 FAN T6 Control Register 3 – Index D8h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
0
Temperature 6 to FAN3 weight setting register:
0: T6 independent with FAN3.
1: Proportion of T6 to FAN3 is 1/15
2: Proportion of T6 to FAN3 is 2/15.
…..
3-0
FAN3_WEIGHT
R/W
F: Proportion of T6 to FAN3 is 15/15
7.108 FAN T6 Control Register 4 – Index D9h
Bit
Name
R/W Default
Description
The 1st BOUNDARY temperature for T6 in temperature mode.
When temperature is exceed this boundary, FAN expect value will load
from segment 1 register (index DC)h.
46h
R/W
7-0
BOUND1TEMP
(70’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 2 register (index DDh).
7.109 FAN T6 Control Register 5 – Index DAh
Bit
Name
R/W Default
Description
The 2st BOUNDARY temperature for T6 in temperature mode.
When temperature is exceed this boundary, FAN1 expect value will load
from segment 2 register (index DDh).
28h
R/W
7-0
BOUND2TEMP
(40’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 3 register (index DEh).
56
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7.110 FAN T6 Control Register 6 – Index DCh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
32
Ex:
Expecstpeed=
×Fullspeeed
32+value
FFh
R/W
7-0
SEC1SPEED
100%:full speed: User must set this register to 0.
(100%)
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
X% full speed: The value programming in this byte is Î (100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.111 FAN T6 Control Register 7 – Index DDh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
d9h
R/W
7-0
SEC2SPEED
(85%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.112 FAN T6 Control Register 8 – Index DEh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
4ch
R/W
7-0
SEC3SPEED
(30%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
FAN_BANK_SEL=0x07
7.113 FAN T7 Control Register 1 – Index D6h
Bit
Name
R/W Default
Description
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7-3
1
-
R
Reserved
0
0
Set 1 that FAN speed will jump to SEC1SPEED when temperature over
BOUND1TEMP CRD9.
Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A)
when temperature over BOUND1TEMP CRD9..
T7_JUMP_HIGH_EN
R/W
Set 1 that FAN speed will jump to SEC2SPEED when temperature under
BOUND1TEMP Hystersis.
Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B)
when temperature under FAN1 Boundary Hystersis.
0
T7_JUMP_LOW_EN
R/W
0
7.114 FAN T7 Control Register 2 – Index D7h
Bit
Name
R/W Default
Description
Temperature 7 to FAN2 weight setting register:
0: T7 independent with FAN2.
1: Proportion of T7 to FAN2 is 1/15
2: Proportion of T7 to FAN2 is 2/15.
…..
7-4
FAN2_WEIGHT
R/W
R/W
0
0
F: Proportion of T7 to FAN2 is 15/15
Temperature 7 to FAN1 weight setting register:
0: T7 independent with FAN1.
1: Proportion of T7 to FAN1 is 1/15
2: Proportion of T7 to FAN1 is 2/15.
…..
3-0
FAN1_WEIGHT
F: Proportion of T7 to FAN1 is 15/15
7.115 FAN T7 Control Register 3 – Index D8h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
0
Temperature 7 to FAN3 weight setting register:
0: T7 independent with FAN3.
1: Proportion of T7 to FAN3 is 1/15
2: Proportion of T7 to FAN3 is 2/15.
…..
3-0
FAN3_WEIGHT
R/W
F: Proportion of T7 to FAN3 is 15/15
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7.116 FAN T7 Control Register 4 – Index D9h
Bit
Name
R/W Default
Description
The 1st BOUNDARY temperature for T7 in temperature mode.
When temperature is exceed this boundary, FAN expect value will load
from segment 1 register (index DC)h.
46h
R/W
7-0
BOUND1TEMP
(70’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 2 register (index DDh).
7.117 FAN T7 Control Register 5 – Index DAh
Bit
Name
R/W Default
Description
The 2st BOUNDARY temperature for T7 in temperature mode.
When temperature is exceed this boundary, FAN1 expect value will load
from segment 2 register (index DDh).
28h
R/W
7-0
BOUND2TEMP
(40’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 3 register (index DEh).
7.118 FAN T7 Control Register 6 – Index DCh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
32
Ex:
Expecstpeed=
×Fullspeeed
32+value
FFh
R/W
7-0
SEC1SPEED
100%:full speed: User must set this register to 0.
(100%)
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
X% full speed: The value programming in this byte is Î (100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.119 FAN T7 Control Register 7 – Index DDh
Bit
Name
R/W Default
Description
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The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
d9h
7-0
SEC2SPEED
R/W
(85%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.120 FAN T7 Control Register 8 – Index DEh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
4ch
R/W
7-0
SEC3SPEED
(30%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
FAN_BANK_SEL=0x08
7.121 FAN T8 Control Register 1 – Index D6h
Bit
Name
R/W Default
Description
7-3
-
R
Reserved
0
Set 1 that FAN speed will jump to SEC1SPEED when temperature over
BOUND1TEMP CRD9.
Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A)
when temperature over BOUND1TEMP CRD9..
Set 1 that FAN speed will jump to SEC2SPEED when temperature under
BOUND1TEMP Hystersis.
1
0
T8_JUMP_HIGH_EN
T8_JUMP_LOW_EN
R/W
0
R/W
0
Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B)
when temperature under FAN1 Boundary Hystersis.
7.122 FAN T8 Control Register 2 – Index D7h
Bit
Name
R/W Default
Description
Temperature 8 to FAN2 weight setting register:
0: T8 independent with FAN2.
1: Proportion of T8 to FAN2 is 1/15
2: Proportion of T8 to FAN2 is 2/15.
…..
7-4
FAN2_WEIGHT
R/W
0
F: Proportion of T8 to FAN2 is 15/15
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Temperature 8 to FAN1 weight setting register:
0: T8 independent with FAN1.
1: Proportion of T8 to FAN1 is 1/15
2: Proportion of T8 to FAN1 is 2/15.
…..
3-0
FAN1_WEIGHT
R/W
0
F: Proportion of T8 to FAN1 is 15/15
7.123 FAN T8 Control Register 3 – Index D8h
Bit
Name
R/W Default
Description
7-4
-
R
Reserved
0
0
Temperature 8 to FAN3 weight setting register:
0: T8 independent with FAN3.
1: Proportion of T8 to FAN3 is 1/15
2: Proportion of T8 to FAN3 is 2/15.
…..
3-0
FAN3_WEIGHT
R/W
F: Proportion of T8 to FAN3 is 15/15
7.124 FAN T8 Control Register 4 – Index D9h
Bit
Name
R/W Default
Description
The 1st BOUNDARY temperature for T8 in temperature mode.
When temperature is exceed this boundary, FAN expect value will load
from segment 1 register (index DC)h.
46h
R/W
7-0
BOUND1TEMP
(70’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 2 register (index DDh).
7.125 FAN T8 Control Register 5 – Index DAh
Bit
Name
R/W Default
Description
The 2st BOUNDARY temperature for T8 in temperature mode.
When temperature is exceed this boundary, FAN1 expect value will load
from segment 2 register (index DDh).
28h
R/W
7-0
BOUND2TEMP
(40’C)
When temperature is below this boundary – hysteresis, FAN expect value
will load from segment 3 register (index DEh).
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7.126 FAN T8 Control Register 6 – Index DCh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
32
Ex:
Expecstpeed=
×Fullspeeed
32+value
FFh
R/W
7-0
SEC1SPEED
100%:full speed: User must set this register to 0.
(100%)
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
X% full speed: The value programming in this byte is Î (100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.127 FAN T8 Control Register 7 – Index DDh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
d9h
R/W
7-0
SEC2SPEED
(85%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
7.128 FAN T8 Control Register 8 – Index DEh
Bit
Name
R/W Default
Description
The meaning of this register is depending on the FAN_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
4ch
R/W
7-0
SEC3SPEED
(30%)
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
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8. Electrical characteristic
8.1 Absolute Maximum Ratings
PARAMETER
RATING
UNIT
V
Power Supply Voltage
-0.5 to 5.5
Input Voltage
-0.5 to VCC+0.5
0 to 70
V
Operating Temperature
Storage Temperature
° C
° C
-55 to 150
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of
the device
8.2 DC Characteristics
(TA = 0° C to 70° C, VCC = 3.3V ± 10%, VSS = 0V )
Parameter
Conditions
MIN
TYP
± 1
± 1
± 1
3.3
1
MAX Unit
Temperature Error, Remote Diode 60 oC < TD < 100 oC, VCC = 3.0V to 3.6V
-40 oC <TD < 60oC, 100 oC <TD < 127oC
oC
± 3
Temperature Error, Local Diode
Supply Voltage range
0 oC < TA < 100 oC, VCC = 3.0V to 3.6V
oC
± 3
3.0
3.6
V
mA
uA
oC
V
Average operating supply current
Standby supply current
Resolution
480
0.125
2.2
95
Power on reset threshold
Diode source current
2.4
High Level
Low Level
uA
uA
10
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(TA = 0° C to 70° C, VCC = 3.3V ± 10%, VSS = 0V)
PARAMETER SYM. MIN.
TYP.
MAX.
UNIT
CONDITIONS
IN ts5v /OD12 - TTL level bi-directional pin with sink capability of 12 mA and schmitt-trigger level input with 5V
tolerance
Input Low Voltage
Input High Voltage
Output Low Current
Input High Leakage
Input Low Leakage
VIL
VIH
IOL
ILIH
ILIL
0.8
V
V
VCC = 3.3 V
VCC = 3.3 V
VOL = 0.4V
VIN = VCC
VIN = 0V
2.0
10
12
mA
µA
µA
+1
-1
IN ts5v /O12 - TTL level bi-directional pin with source-sink capability of 12 mA and schmitt-trigger level input
with 5V tolerance
Input Low Threshold Voltage
Input High Threshold Voltage
Output Low Current
Vt-
Vt+
IOL
IOH
ILIH
ILIL
0.5
1.6
10
0.8
2.0
12
1.1
2.4
V
VCC = 3.3 V
VCC = 3.3 V
VOL = 0.4 V
VOH = 2.4V
VIN = VCC
VIN = 0V
V
mA
mA
µA
µA
Output High Current
-12
-10
+1
-1
Input High Leakage
Input Low Leakage
INts5v
-
TTL level Schmitt-triggered input pin with 5V tolerance
Input Low Threshold Voltage
Input High Threshold Voltage
Input High Leakage
Vt-
Vt+
ILIH
ILIL
0.5
1.6
0.8
2.0
1.1
2.4
+1
-1
V
V
VCC = 3.3V
VCC = 3.3V
VIN = VCC
VIN = 0 V
µA
µA
Input Low Leakage
I lv /OD8-S1 – Low voltage level bidirection pin with 8 mA source capability (Internal pull-down sink 1 mA)
Input Low Threshold Voltage
Input High Threshold Voltage
Input High Leakage
Vlvt-
Vlvt+
0.4
1.0
V
V
VCC = 3.3V
VCC = 3.3V
VIN = VCC
ILIHlv
+1
µA
I lv /OD8 – Low voltage level bidirection pin with 8 mA source capability
Input Low Threshold Voltage
Input High Threshold Voltage
Input High Leakage
Vlvt-
Vlvt+
0.4
1.0
V
V
VCC = 3.3V
VCC = 3.3V
VIN = VCC
VIN = 0 V
ILIHlv
ILILlv
+1
-1
µA
µA
Input Low Leakage
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8.3 AC Characteristics
t
t
SCL
R
t
R
SCL
t
t
SU;STO
t
SU;DAT
HD;SDA
SDA IN
VALID DATA
t
HD;DAT
SDA OUT
Serial Bus Timing Diagram
Serial Bus Timing
PARAMETER
SYMBOL
t-SCL
MIN.
2
MAX.
UNIT
uS
SCL clock period
-
Start condition hold time
Stop condition setup-up time
DATA to SCL setup time
DATA to SCL hold time
SCL and SDA rise time
tHD;SDA
tSU;STO
tSU;DAT
tHD;DAT
tR
300
300
50
5
-
nS
-
nS
-
-
nS
nS
-
300
nS
9. Ordering Information
Part Number Package Type
Production Flow
20 pin SSOP Green Package
F75377R
Commercial, 0°C to +70°C
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10. Package Dimensions
Feature Integration Technology Inc.
Headquaters
Taipei Office
7F, No 31, Shintai Rd.,
Bldg K4, 7F, No. 700, Chung Cheng Rd.,
Chungho City, Taipei 235, Taiwan, R.O.C.
TEL : 886-2-8227-8027
Jubei City, Hsinchu 302, Taiwan, R.O.C.
TEL : 886-3-6562727
FAX : 886-3-6560537
FAX : 886-2-8227-8037
www: http://www.fintek.com.tw
Please note that all datasheet and specifications are subject to change without notice. All the trade
marks of products and companies mentioned in this datasheet belong to their respective owner
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