PCK2001RDB [NXP]
14.318 . 133 MHz I2C 1:6 clock buffer; 14.318 。 133 MHz的I2C 1 ： 6时钟缓冲器
| 型号： | PCK2001RDB |
| 厂家： | 
NXP |
| 描述： | 14.318 . 133 MHz I2C 1:6 clock buffer |
| 文件： | 总12页 (文件大小：78K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
PCK2001R
14.318 – 133 MHz I2C 1:6 clock buffer
Product specification
2000 Jul 25
Philips
Semiconductors
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
2
FEATURES
• Individual SDRAM clock output enable/disable via I C
• Typically used to support four registered SDRAM DIMMs
• Multiple V , V pins for noise reduction
DD
SS
• 16-pin SSOP package
• 3.3 V operation
• See PCK2001 for 48-pin 1:18 buffer part
• See PCK2001M for 28-pin 1:10 buffer part
• Optimized for 33 MHz, 66 MHz, 100 MHz and 133 MHz operation
• Part-to-part skew < 500 ps
• ESD protection exceeds 2000 V per Standard 801.2
DESCRIPTION
The PCK2001R is a 1–6 fanout buffer used for 133/100 MHz CPU,
66/33 MHz PCI, 14.318 MHz REF, or 133/100/66 MHz SDRAM clock
distribution. 6 outputs are typically used to support up to 4 registered
SDRAM DIMMs commonly found in server applications.
• 175 ps skew outputs typical
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
= 3.3 V, CL = 30 pF
TYPICAL
UNIT
t
t
Propagation delay
2.5
2.5
PLH
PHL
V
ns
CC
BUF_IN to BUF_OUT
Rise time
n
t
r
V
CC
V
CC
V
CC
= 3.3 V, CL = 30 pF
= 3.3 V, CL = 20 pF
= 3.465 V
1.0
700
50
ns
ps
µA
t
f
Fall time
I
Total supply current
CC
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
ORDER CODE
DRAWING NUMBER
16-Pin Plastic SSOP
0°C to +70°C
PCK2001RDB
SOT369-1
PIN CONFIGURATION
PIN DESCRIPTION
PIN
NUMBER
I/O
TYPE
SYMBOL
FUNCTION
V
16
1
2
3
4
5
6
7
8
DD9
BUF_OUT0
BUF_OUT
(0, 2)
V
15 BUF_OUT14
SS0
1, 3
13, 15
6, 11
Output
Output
Output
Buffered clock outputs
Buffered clock outputs
V
SS9
BUF_OUT2
BUF_IN
14
13
12
BUF_OUT
(11, 14)
BUF_OUT11
V
V
SS
DD5
BUF_OUT
(7, 17)
Buffered clock outputs
Buffered clock input
11 BUF_OUT17
2
BUF_OUT7
2
4
8
9
Input
I/O
BUF_IN
SDA
10
9
V
SSI
V
C
DDI
C
2
I C serial data
SDA
SCL
2
Input
SCL
I C serial clock
TOP VIEW
V
(5, 9)
DD
SA00542
12, 16
2, 14
Input
Input
3.3 V power supply
Ground
V
(0, 9)
SS
Intel and Pentium are registered trademarks of Intel Corporation.
I C is a trademark of Philips Semiconductors Corporation.
2
2
2
7
Input
Input
V
3.3 V I C power supply
DDI C
2
2
10
V
I C ground
SSI C
2
2000 Jul 25
853-2210 24202
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
FUNCTION TABLE
2
BUF_IN
I CEN
BUF_OUTn
L
H
H
X
H
L
L
H
L
1, 2
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to V (V = 0V).
SS
SS
LIMITS
SYMBOL
PARAMETER
CONDITION
UNIT
MIN
MAX
V
I
DC 3.3V supply voltage
DC input diode current
DC input voltage
–0.5
+4.6
–50
5.5
V
mA
V
DD
V < 0
IK
I
V
Note 2
–0.5
–0.5
–65
I
I
DC output diode current
DC output voltage
V
O
> V or V < 0
±50
mA
V
OK
DD
O
V
Note 2
V
+ 0.5
O
CC
I
DC output source or sink current
Storage temperature range
V
O
≥ 0 to V
±50
mA
°C
O
DD
T
stg
+150
Power dissipation per package
plastic medium-shrink SO (SSOP)
For temperature range: 0 to +70°C
above +55°C derate linearly with 11.3mW/K
P
TOT
850
mW
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
CONDITIONS
UNIT
MIN
3.135
20
MAX
3.465
30
V
DD
DC 3.3V supply voltage
Capacitive load
V
pF
V
C
L
V
I
DC input voltage range
0
V
DD
V
DD
V
O
DC output voltage range
0
V
T
amb
Operating ambient temperature range in free air
0
+70
°C
3
2000 Jul 25
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
DC CHARACTERISTICS
LIMITS
TEST CONDITIONS
OTHER
T
= 0°C to +70°C
UNIT
SYMBOL
PARAMETER
amb
V
DD
(V)
MIN
MAX
V
HIGH level input voltage
LOW level input voltage
3.3V output HIGH voltage
3.3V output LOW voltage
Output HIGH current
3.135 to 3.465
3.135 to 3.465
3.135 to 3.465
3.135 to 3.465
3.135 to 3.465
3.135 to 3.465
3.465
2.0
V
DD
+ 0.3
V
V
IH
V
V
– 0.3
0.8
IL
SS
V
OH
I
= –1mA
3.1
–
–
50
V
OH
V
OL
I
= 1mA
mV
mA
mA
µA
µA
OL
I
V
V
= 1.5V
= 1.5V
–70
65
–5
–
–185
160
5
OH
OUT
OUT
I
OL
Output LOW current
±I
Input leakage current
Quiescent supply current
I
I
3.465
V = V or GND
I = 0
O
100
CC
I
DD
4
2000 Jul 25
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
AC CHARACTERISTICS
LIMITS
= 0°C to +70°C
TEST CONDITIONS
NOTES
T
amb
SYMBOL
PARAMETER
UNIT
MAX
9
MIN
29.9
12.3
12.1
14.9
5.6
5.3
9.9
3.3
3.2
7.4
2.6
2.2
1.5
1.5
1.0
1.0
45
TYP
T
T
CLK period
CLK HIGH time
CLK LOW time
CLK period
1, 6
2, 6, 8
3, 6, 8
1, 6
30.0
14.3
14.1
15.0
6.8
30.2
P
16.3
16.1
15.2
8.0
7.7
10.2
5.1
5.0
7.7
3.6
3.2
4.0
4.0
3.5
3.5
55
33MHz
66MHz
ns
ns
ns
ns
H
T
L
P
H
T
T
CLK HIGH time
CLK LOW time
CLK period
2, 6, 8
3, 6, 8
1,6
T
6.5
L
P
H
T
T
10.01
4.2
CLK HIGH time
CLK LOW time
CLK period
2, 6, 8
3, 6, 8
1, 6
100MHz
133MHz
T
4.1
L
P
H
T
T
7.5
CLK HIGH time
CLK LOW time
Rise time
2, 6, 8
3, 6, 8
4, 6, 10
4, 6, 11
6, 7
3.1
T
2.7
L
T
T
2.0
V/ns
V/ns
ns
SDRISE
SDFALL
Fall time
2.5
T
T
Buffer LH propagation delay
Buffer HL propagation delay
Output Duty Cycle
Bus CLK skew
2.4
PLH
6, 7
2.6
ns
PHL
DUTY CYCLE
Measured at 1.5V
5, 6, 7
1, 6
50
%
T
150
250
500
ps
SKW
T
Device to device skew
ps
DDSKW
NOTES:
1. Clock period and skew are measured on the rising edge at 1.5V.
2. T is measured at 2.4V as shown in Figure 2.
H
3. T is measured at 0.4V as shown in Figure 2.
L
4. T
and T are measured as a transition through the threshold region V = 0.4V and V = 2.4V (1 mA) JEDEC specification.
SDFALL OL OH
SDRISE
5. Duty cycle should be tested with a 50/50% input.
6. Over MIN (20pF) to MAX (30pF) discrete load, process, voltage, and temperature.
7. Input edge rate for these tests must be faster than 1 V/ns.
8. Calculated at minimum edge rate (1.5ns) to guarantee 45/55% duty cycle at 1.5V. Pulsewidth is required to be wider at the faster edge to
ensure duty cycle specification is met.
9. All typical values are at V = 3.3V and T
= 25°C.
CC
amb
10.Typical is measured with MAX (30pF) discrete load.
11. Typical is measured with MIN (20pF) discrete load.
5
2000 Jul 25
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
2
I C CONSIDERATIONS
2
2
I C has been chosen as the serial bus interface to control the PCK2001R. I C was chosen to support the JEDEC proposal JC-42.5 168 Pin
2
Unbuffered SDRAM DIMM. All vendors are required to determine the legal issues associated with the manufacture of I C devices.
1) Address assignment: The clock driver in this specification uses the single, 7-bit address shown below. All devices can use the address if only
2
one master clock driver is used in a design. The address can be re-used for the CKBF device if no other conflicting I C clock driver is used in
the system.
The following address was confirmed by Philips on 09/04/96.
A6
A5
A4
A3
A2
A1
A0
R/W
0
1
1
0
1
0
0
1
2
NOTE: The R/W bit is used by the I C controller as a data direction bit. A ‘zero’ indicates a transmission (WRITE) to the clock device. A ‘one’
indicates a request for data (READ) from the clock driver. Since the definition of the clock buffer only allows the controller to WRITE data; the
R/W bit of the address will always be seen as ‘zero’. Optimal address decoding of this bit is left to the vendor.
2) Options: It is our understanding that metal mask options and other pinouts of this type of clock driver will be allowed to use the same address
2
as the original CKBF device. I C addresses are defined in terms of function (master clock driver) rather than form (pinout, and option).
3) Slave/Receiver: The clock driver is assumed to require only slave/receiver functionality. Slave/transmitter functionality is optional.
4) Data Transfer Rate: 100 kbits/s (standard mode) is the base functionality required. Fast mode (400 kbits/s) functionality is optional.
2
5) Logic Levels: I C logic levels are based on a percentage of V for the controller and other devices on the bus. Assume all devices are
DD
based on a 3.3 Volt supply.
6) Data Byte Format: Byte format is 8 Bits as described in the following appendices.
2
7) Data Protocol: To simplify the clock I C interface, the clock driver serial protocol was specified to use only block writes from the controller.
The bytes must be accessed in sequential order from lowest to highest byte with the ability to stop after any complete byte has been
2
transferred. Indexed bytes are not allowed. However, the SMBus controller has a more specific format than the generic I C protocol.
2
The clock driver must meet this protocol which is more rigorous than previously stated I C protocol. Treat the description from the viewpoint of
controller. The controller ‘‘writes” to the clock driver and if possible would ‘‘read” from the clock driver (the clock driver is a slave/receiver only
and is incapable of this transaction.)
‘‘The block write begins with a slave address and a write condition. After the command code the host (controller) issues a byte count which
describes how many more bytes will follow in the message. If the host had 20 bytes to send, the first byte would be the number 20 (14h),
followed by the 20 bytes of data. The byte count may not be 0. A block write command is allowed to transfer a maximum of 32 data bytes.”
1 bit
7 bits
1
1
8 bits
1
Start bit
Slave Address
R/W
Ack
Command Code Ack
Byte Count = N
...
Ack
1 bit
Data Byte 1
8 bits
Ack
1
Data Byte 2
8 bits
Ack
1
Data Byte 2
8 bits
Ack
1
Stop
1
SW00279
NOTE: The acknowledgement bit is returned by the slave/receiver (the clock driver).
Consider the command code and the byte count bytes required as the first two bytes of any transfer. The command code is software
programmable via the controller, but will be specified as 0000 0000 in the clock specification. The byte count byte is the number of additional
bytes required to transfer, not counting the command code and byte count bytes. Additionally, the byte count byte is required to be a minimum of
1 byte and a maximum of 32 bytes to satisfy the above requirement.
6
2000 Jul 25
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
For example:
Byte count byte
Notes:
MSB
0000
0000
0000
0000
0000
0000
0000
0000
0010
LSB
0000 Not allowed. Must have at least one byte.
0001 Data for functional and frequency select register (currently byte 0 in spec)
0010 Reads first two bytes of data. (byte 0 then byte 1)
0011 Reads first three bytes (byte 0, 1, 2 in order)
0100 Reads first four bytes (byte 0, 1, 2, 3 in order)
0101 Reads first five bytes (byte 0, 1, 2, 3, 4 in order)
0110 Reads first six bytes (byte 0, 1, 2, 3, 4, 5 in order)
0111 Reads first seven bytes (byte 0, 1, 2, 3, 4, 5, 6 in order)
0000 Max byte count supported = 32
A transfer is considered valid after the acknowledge bit corresponding to the byte count is read by the controller. The serial controller interface
can be simplified by discarding the information in both the command code and the byte count bytes and simply reading all the bytes that are
sent to the clock driver after being addressed by the controller. It is expected that the controller will not provide more bytes than the clock driver
can handle. A clock vendor may choose to discard any number of bytes that exceed the defined byte count.
8) Clock stretching: The clock device must not hold/stretch the SCLOCK or SDATA lines low for more than 10 ms. Clock stretching is
discouraged and should only be used as a last resort. Stretching the clock/data lines for longer than this time puts the device in an error/time-out
mode and may not be supported in all platforms. It is assumed that all data transfers can be completed as specified without the use of
clock/data stretching.
9) General Call: It is assumed that the clock driver will not have to respond to the ‘‘general call.”
2
10) Electrical Characteristics: All electrical characteristics must meet the standard mode specifications found in section 15 of the I C
specification.
a) Pull-Up Resistors: Any internal resistors pull-ups on the SDATA and SCLOCK inputs must be stated in the individual datasheet. The use of
internal pull-ups on these pins of below 100 kΩ is discouraged. Assume that the board designer will use a single external pull-up resistor for
2
2
each line and that these values are in the 5–6 kΩ range. Assume one I C device per DIMM (serial presence detect), one I C controller, one
2
clock driver plus one/two more I C devices on the platform for capacitive loading purposes.
2
(b) Input Glitch Filters: Only fast mode I C devices require input glitch filters to suppress bus noise. The clock driver is specified as a standard
mode device and is not required to support this feature.
11) PWR DWN: If a clock driver is placed in PWR DWN mode, the SDATA and SCLK inputs must be 3-Stated and the device must retain all
2
programming information. I current due to the I C circuitry must be characterized and in the data sheet.
DD
2
2
For specific I C information consult the Philips I C Peripherals Data Handbook IC12 (1997).
7
2000 Jul 25
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
SERIAL CONFIGURATION MAP
The serial bits will be read by the clock buffer in the following order:
Byte 0 – Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte 1 – Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte 2 – Bits 7, 6, 5, 4, 3, 2, 1, 0
All unused register bits (Reserved and N/A) should be desined as “Don’t Care”. It is expected that the controller will force all of these bits to a
“0” level.
All register bits labeled “Initialize to 0” must be written to zero during intialization. Failure to do so may result in a higher than normal operating
current. The controller will read back the last written value.
Byte 0: Active/inactive register
1 = enable; 0 = disable
BIT
7
PIN#
6
NAME
DESCRIPTION
BUF_OUT7
Active/Inactive
6
—
—
—
—
3
—
—
5
—
—
4
—
—
—
3
—
2
BUF_OUT2
—
Active/Inactive
—
1
—
1
0
BUF_OUT0
Active/Inactive
NOTE:
1. Inactive means outputs are held LOW and are disabled from switching. These outputs are designed to be configured at power-on and are
not expected to be configured during the normal modes of operation.
Byte 1: Active/inactive register
1 = enable; 0 = disable
BIT
7
PIN#
—
NAME
DESCRIPTION
—
—
6
15
—
BUF_OUT14
Active/Inactive
5
—
—
4
—
—
—
3
13
—
BUF_OUT11
Active/Inactive
2
—
—
—
—
—
—
1
—
0
—
NOTE:
1. Inactive means outputs are held LOW and are disabled from switching. These outputs are designed to be configured at power-on and are
not expected to be configured during the normal modes of operation.
Byte 2: Active/inactive register
BIT
7
PIN#
11
—
NAME
DESCRIPTION
BUF_OUT17
Active/Inactive
6
—
—
—
—
—
—
—
—
—
—
—
—
—
—
5
—
4
—
3
—
2
—
1
—
0
—
NOTE:
1. Inactive means outputs are held LOW and are disabled from switching. These outputs are designed to be configured at power-on and are
not expected to be configured during the normal modes of operation.
8
2000 Jul 25
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
AC WAVEFORMS
TEST CIRCUIT
V
V
V
V
= 1.5 V
M
X
Y
= V + 0.3 V
OL
V
DD
= V –0.3 V
OH
and V are the typical output voltage drop that occur with the
OL
OH
output load.
V
V
I
O
V
DD
PULSE
GENERATOR
D.U.T.
BUF_IN
INPUT
V
V
M
t
M
500Ω
R
C
L
T
t
PLH
PHL
V
V
M
M
SW00719
BUF_OUT
Figure 3. Load circuitry for switching times
SW00246
Figure 1. Load circuitry for switching times.
t
p
t
h
DUTY CYCLE
2.4
1.5
0.4
t
l
t
r
t
f
SW00613
Figure 2. Buffer Output clock
9
2000 Jul 25
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
SSOP16: plastic shrink small outline package; 16 leads; body width 4.4 mm
SOT369-1
10
2000 Jul 25
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
NOTES
11
2000 Jul 25
Philips Semiconductors
Product specification
14.318 – 133 MHz I2C 1:6 clock buffer
PCK2001R
Data sheet status
[1]
Data sheet
status
Product
status
Definition
Objective
specification
Development
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
Preliminary
specification
Qualification
This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make changes at any time without notice in order to
improve design and supply the best possible product.
Product
specification
Production
This data sheet contains final specifications. Philips Semiconductors reserves the right to make
changes at any time without notice in order to improve design and supply the best possible product.
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — 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. Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Righttomakechanges—PhilipsSemiconductorsreservestherighttomakechanges, withoutnotice, intheproducts, includingcircuits,standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Copyright Philips Electronics North America Corporation 2000
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Date of release: 07-00
Document order number:
9397 750 07352
Philips
Semiconductors
相关型号：
PCK2001RDB-T
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PCK2002DGG-T
IC PCK2000 SERIES, LOW SKEW CLOCK DRIVER, 18 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO48, 6.10 MM, PLASTIC, MO-153, SOT362-1, TSSOP-48, Clock Driver
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