ACPL-C87B [AVAGO]
Precision Optically Isolated Voltage Sensor; 精密光学隔离电压传感器
| 型号： | ACPL-C87B |
| 厂家： | 
AVAGO TECHNOLOGIES LIMITED |
| 描述： | Precision Optically Isolated Voltage Sensor |
| 文件： | 总22页 (文件大小：559K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AFCT-57V6NSZ
Small Form Factor Pluggable (SFP) LC Optical Transceiver
for 1.25GBd Ethernet at Extended Link Lengths (Up to 40km)
Data Sheet
Description
Features
• Gigabit Ethernet transceiver
• RoHS Compliant
The AFCT-57V6NSZ transceiver is a specially customised
low-cost and hot-pluggable SFP MSA-compliant optical
interconnect module for Gigabit Ethernet applications at
transmission distances up to 40km [1, 2].
• IEEE 802.3z, 1000BASE-ZX
• Extended transmission distance up to 40 km
• Compliant with SFP Multi Source Agreement (MSA)
• Duplex-LC optical interface
• 1550 nm DFB-LD
The AFCT-57V6NSZ implements the serial portion of the
physical layer, and supports the features shown below
The AFCT-57V6NSZ features differential serial I/O inter-
face lines that are AC-coupled signals. Avago’s design
of the long wavelength SFP module uses a 1550 nm
distributed feedback (DFB) laser diode (LD) and takes
advantage of an integrated preamplifier/photo-detector.
The AFCT-57V6NSZ also contains transmitter, receiver
and control electronics.
• Serial ID
• Digital Diagnostic Monitoring interface
• Bail delatch for easy removal from cage
• Available in industrial temperature range
(-40 to +85°C)
Singlemode optical fiber, with LC connectors, is rec-
ommended as the communication media. The AFCT-
57V6NSZ has a digital diagnostic monitoring (DDM)
function in accordance with SFF-8472 [3] which allows
monitoring operating temperature, supply voltage, laser
bias current, transmitter optical output power and opti-
cal received power in real time via a serial-ID interface.
• Immune to ESD, RF fields, and Vcc noise
• Designed for very low RF emissions
• Class 1 laser safety
• AC-coupled differential serial I/O interface
• Single +3.3 Volt supply operation
• Low power dissipation
On the following page, Table1 lists the general specifica-
tions for the AFCT-57V6NSZ SFP.
Applications
• Ethernet switches
Figure 1 shows a simplified block diagram of the AFCT-
57V6NSZ electronics.
• Multi-service switches and routers
• Broadband aggregation and wireless infrastructure
• Switched backplane applications
• High Speed Interface for server farms
• Metro access switch GbE connections
Related Products
• AFBR-5715Z family:
850 nm 1.25 GBd 3.3 V multimode SFP Gigabit Ether-
net transceivers with DMI
• AFCT-5715Z:
1.25 GBd Ethernet (1000Base-LX) SFP with DMI
Digital Diagnostic
Monitoring Interface
(A2h)
Module Definition
(A0h)
SCL
SCL
SDA
SDA
MOD_DEF[1]
MOD_DEF[2]
Optical
Output
TD +
Modulation
100 ohm
Bias
DFB-LD
Circuit
TD-
DC Bias
Circuit
Monitor
PD
APC
Circuit
TX_DISABLE
TX_FAULT
Control Circuit
Transmitter
Optical
Input
RD +
RD -
TZ
AMP
Limiting
Amp
PIN-PD
RX_LOS
Level
Detector
Receiver
VccR
VccT
Vcc Slow Start
VeeR
VeT
Figure 1. AFCT-57V6NSZ Simplified Block Diagram
Table 1. General AFCT-57V6NSZ Specifications
Parameter
1000BASE-ZX*
unit
Nominal Bit Rate
1.25
Gbps
Link Loss Budget
17
dB
dB
-
Minimum Required Link Loss
Bit Error Ratio(BER)
0
<10-12
9
Fiber Core Diameter
mm
Operating Range(max)
40
km
†
Optical specifications are modified to realize 40 km transmission in singlemode fiber.
2
Absolute Maximum Ratings
Recommended Operating Conditions
Operation of the AFCT-57V6NSZ beyond the Absolute
Table 3 lists the conditions under which the AFCT-
Maximum Ratings listed in Table 2 can degrade or dam- 57V6NSZ is tested and should be operated. It is possible
age the product. With the exception of laser safety, it to reduce the reliability and lifetime of the device if these
is not implied that the product will function above the
Recommended Operating Conditions. It is possible to
ratings are exceeded for extended periods. Functional
operation should be restricted to these Recommended
reduce the reliability and lifetime of the device if the Operating Conditions.
Recommended Operating Conditions are exceeded (see
Table 3).
Table 2. Absolute Maximum Ratings
Parameter
Symbol
Vcc
RH
Min
-0.3
5
Max
4.0
Unit
V
Supply Voltage
Relative Humidity *
TX_DISABLE Input Voltage
85
%
VIN
Ts
-0.5
-40
Vcc+0.5
+85
V
Storage Temperature
† No condensation
°C
Table 3. Recommended Operating Conditions
Parameter
Symbol
Min
Typ
Max
Unit
Supply Voltage
Vcc
3.135
3.3
3.465
V
Ripple And Noise
-
-
-
100
mVp-p
Operating Case Temperature
AFCT-57V6NSZ
AFCT-57V6ANSZ
TC
TC
-5
-40
-
-
70
85
°C
†
Measured with a sinusoidal signal from 100 Hz to 2 MHz at the input of the recommended power supply filter shown in Figure 13.
Handling Precautions
Optical Description
Avago advises that precautions be taken to avoid elec- Table 4 describes the performance of the transmitter por-
trostatic discharge (ESD) during handling, assembly, and tion of the AFCT-57V6NSZ over the operating conditions.
testing of the AFCT-57V6NSZ. Degradation or damage Table 5 describes the performance of the receiver portion
can occur if proper guidelines for handling ESD sensitive
devices are not followed. This could result in an inoper-
able device or unsafe operation as described above.
of the AFCT-57V6NSZ over the operating conditions.
The optical pulse characteristics of the transmitter are
specified in the form of an eye pattern. When measured
In particular, avoid getting particulate or solvent contami- in accordance with [2], the mask shown in Figure 2 evalu-
nation onto the optical surfaces of the laser and photo-
detector assemblies. It is also strongly recommended that
the LC connector receptacle be covered when not in use.
Excessive force when installing and extracting the AFCT-
57V6NSZ should be avoided. Refer to the SFP Application
Note [6] for additional handling information.
ates rise time, fall time, overshoot and undershoot.
3
Table 4. Transmitter Optical Specifications
Parameter
Symbol
Min
Typ
Max
Unit
Spectral Center Wavelength
lC
1500
1550
1580
nm
Dl20
-20dB Spectral Width
-
-
0.5
nm
Side Mode Suppression Ratio
Optical Output Power, Average*
Extinction Ratio
SMSR
PO
30
-4
9
-
-
-
-
-
-
dB
dBm
dB
ps
UI
0
ER
-
Rise/Fall Time**
Tr/Tf
TJ
-
260
0.28
Total Jitter (TJ)
-
Optical Waveform
-
Compliant with IEEE 802.3z eye mask (Refer
to Figure 2)
-
Disable Optical Output Power
-
-
-
-35
dBm
†
SMF 9/125
†† 20 % - 80 % edge rate without filter
Table 5. Receiver Optical Specifications
Parameter
Symbol
Min
Typ
Max
Unit
Spectral Center Wavelength
lC
1270
-
1600
nm
Receiver Saturation
Minimum Receiver Sensitivity
RX_LOS Assert Level
RX_LOS De-assert Level
RX_LOS Hysteresis
Pmax
Pmin
LOSA
LOSD
LOSHYS
RL
0
-
.
dBm
dBm
dBm
dBm
dB
.
-
-21
-35
.
-
.
-
-24.5
0.5
12
2
-
.
.
Return Loss
dB
†
Receiver sensitivity is measured at the center of the eye for BER=1x10-12 using PRBS 2^7-1
130
100
80
50
20
0
-20
0
22
37.5
62.5
78
100
Normalized Time (% of Unit Interval)
Figure 2. Transmitter Eye Mask
4
Electrical Description
[1]
[2]
is present. The levels of MOD_DEF and MOD_DEF are
also indicated assuming that they are pulled up with a
4.7k-10k ohm resistor to +3.3 V on host board. Table 8
indicates the voltage levels required to be delivered by
the host to the transmitter differential serial data input
TD+/-. Table 9 indicates the voltage level output from the
receiver differential serial data output RD+/-.
The supply current of the AFCT-57V6NSZ is described in
Table 6 below. The inrush current is defined as the ad-
ditional inrush due to hot plugging.
The characteristics for the control and status signals are
shown in Table 7. Output status signals, TX_FAULT and
RX_LOS, are all open-collector/drain, and the levels indi-
cated assuming 4.7k-10k ohm pull-up resistor to Host_Vcc
Table 6. Electrical Characteristics
Parameter
Symbol
Min
Typ
Max
Unit
Supply Current
ICC
-
-
300
mA
Inrush Current*
Linrush
-
-
30
mA
†
greater than the steady state value
Table 7. Control/Status Signal Characteristics
Parameter
Symbol
Min
Max
Unit
TX_DISABLE Input Voltage - High
VIH
2.0
VccT
V
TX_DISABLE Input Voltage - Low
TX_FAULT Output Voltage - High
TX_FAULT Output Voltage - Low
RX_LOS Output Voltage – High
VIL
0
0.8
V
V
V
V
V
V
V
V
VOH
VOL
VOH
VOL
VOL
VIH
Host_Vcc-0.5
Host_Vcc
0
0.4
Host_Vcc-0.5
Host_Vcc
RX_LOS Output Voltage – Low
0
0.4
0.4
.
MOD_DEF[2] (SDA) Output Voltage – Low
MOD_DEF[1] (SCL) Input Voltage – High
MOD_DEF[1] (SCL) Input Voltage – Low
.
VccT, (VccR) x 0.7
-
VIL
VccT(VccR) x 0.3
Table 8. TD+/- Input Signal Requirements
Parameter
Symbol
Min
Typ
Max
Unit
Input Amplitude, Differential
VI
200
.
2400
mV p-p
W
Input Impedance, Differential
RI
.
100
.
Deterministic Jitter
Total Jitter ††
Mark Ratio
DJ
TJ
.
.
.
.
.
0.10
0.24
.
UI
UI
%
.
50
†
AC-coupled.
†† TJ = RJ + DJ. At BER = 10-12
Table 9. RD+/- Output Signal Characteristics
Parameter
Symbol
Min
Typ
Max
Unit
mVp-p
W
Output Amplitude, Differential*
VO
600
-
1200
Output Impedance, Differential
RO
-
100
-
†
AC-coupled.
5
Pin Description
A brief description of all of the electrical connector pins follows. The connector has staged contacts, so that hot-plug-
ging can be performed. See Table 10.
Table 10. Pinout
Pin No.
Sequence
Description
Pin No
Sequence
Description
1
1
VeeT
11
1
VeeR
2
3
3
3
3
3
3
3
1
1
TX_FAULT
TX_DISABLE
MOD_DEF[2]
MOD_DEF[1]
MOD_DEF[0]
RATE_SELECT
RX_LOS
12
13
14
15
16
17
18
19
20
3
3
1
2
2
1
3
3
1
RD-
3
RD+
VeeR
VccR
VccT
VeeT
TD+
TD-
4
5
6
7
8
9
VeeR
10
VeeR
VeeT
Hot-Plugging Sequence
The ground, VCC and other pins designated as the se-
quence (1) pins engage first during hot-plugging. The
sequence (2) pins connect second during hot-plugging
followed by the sequence (3) pins. Conversely, when
the module is unplugged from the host system, the se-
quence (3) pins disengages before the sequence (2) pins
disengages and then followed by the sequence (1) pins.
Inserting or removing the AFCT-57V6NSZ will disrupt
data transmission. This disruption occurs when the
downstream receiver (e.g. deserializer phase-lock-loop)
resynchronizes to a different bitstream signal. When this
occurs, the downstream system will recognize the asso-
ciated error (e.g. comma detect, loss-of-light, disparity,
CRC, and frame errors).
VeeT
VeeT
1
2
20
19
18
17
16
15
14
13
12
11
TX_FAULT
TX_DISABLE
MOD_DEF[2]
TD-
TD+
VeeT
VccT
VccR
VeeR
RD+
RD-
3
4
5
MOD_DEF[1]
6
MOD_DEF[0]
RATE_SELECT
7
RX_LOS
VeeR
8
9
VeeR
VeeR
10
It is the responsibility of the system integrator to assure
that no thermal, energy, or voltage hazard exists during
the hot-plug-unplug sequence. It is also the responsibility
of the system integrator and end-user to minimize static
electricity and the probability of ESD events by careful
design.
Bottom of Board
(as view through top of board)
Top of Board
Figure 3. SFP Transceiver Electrical Pad Layout
6
Pin Definitions
RATE_SELECT Not Connected.
TD+/TD- Transmit Data In and Inverted Transmit Data In are
differential input to the transmitter. They are internally AC-
coupled into an equivalent load of RI differential, as shown
in Figure 13.
TX_FAULT Active high open collector/drain output which
indicates a fault in the module.
This can be (1) failure of the laser driver or (2) end-of-life
of the laser. Under these conditions, the laser will be de-
activated within the assert time. TX_FAULT also requires a
4.7k-10k ohm pull-up resistor external to the module, i.e.
in the host system Host_Vcc, as shown in Figure 13. The
pull-up voltage is between 2.0 V and VccT(VccR) + 0.3 V.
Conditions (1) and (2) are latched, and for diagnostic pur-
poses only, may be reset by toggling TX_DISABLE high for
at least t_reset. See Table 11 and Figure 8.
TX_DISABLE Active high TTL input, with internal 10kW pull-
up resistor to Vcc.
Asserting the transmitter disable will deactivate the laser
within the assert time. The truth table shown describes
the state of the module, and Table 11 indicates the timing
of TX_DISABLE.
RD+/RD- Received Data Out and Inverted Received Data
Out are differential serial output from the receiver. These
are AC-coupled 100 ohm differential lines which should
be terminated with a 100 ohm (differential) at the user
SERDES, as shown in Figure 13. AC coupling is done inside
the module and is thus not required on the host board.
MOD_DEF[0:2] The AFCT-57V6NSZ has a serial ID func-
tion which provides information about the transceiver’s
capabilities, standard interfaces, manufacturer and other
information, and has a digital diagnostic monitoring
function, per SFF-8472 [3], which allows monitoring op-
erating temperature, supply voltage, laser bias current,
transmitter optical output power and optical received
power in real time. These functions are provided via a two
wire serial EEPROM interface.
RX_LOS Active high open collector/drain output which
indicates a loss-of-signal condition (LOS). When the aver-
age optical power received by the module is below the
Assert Level, RX_LOS is indicated according to the truth
table below, and Table 11 indicates the timing of RX_LOS.
RX_LOS requires a 4.7k-10k ohm pull-up resistor external
to the module, i.e., in the host system Host_Vcc, as shown
in Figure 13. The pull-up voltage is between 2.0 V and
VccR(VccT) + 0.3 V.
MOD_DEF[0] is connected to ground inside the module.
MOD_DEF[1] is the serial clock signal input. MOD_DEF[2]
is the data output/input.
7
Timing Characteristics of Control and Status I/O
The timing characteristics of the control and status line are listed in Table 11 and Figure 4 to 10.
Table 11. Timing Characteristics of Control and Status I/O
Parameter
Symbol
Min
Max
Unit
Condition
TX_DISABLE
Assert Time
t_off
-
10
µs
Time from rising edge of TX_DISABLE to when the optical
output falls below 10 % of nominal
TX_DISABLE
Negate Time
t_on
-
-
1
ms
ms
Time from falling edge of TX_DISABLE to when the modu-
lated optical output rises above 90% of nominal
Time to Initialize,
including reset of
TX_FAULT
t_init
300
From power on or negation of TX_FAULT using TX_DIS-
ABLE
TX_FAULT
Assert Time
T_fault
-
100
-
µs
Time from fault to TX_FAULT on
Time TX_DISABLE must be held high to reset TX_FAULT
Time from LOS state to RX_LOS Assert
Time from non-LOS state to RX_LOS deassert
-
TX_DISABLE to
Reset
T_reset
t_losson
t_lossoff
F_clock
10
-
µs
RX_LOS Assert
Time
100
100
100
µs
RX_LOS Negate
Time
-
µs
Serial ID
-
kHz
Clock Rate
8
Vcc > 2.97 V
Vcc > 2.97 V
TX_FAULT
TX_FAULT
TX_DISABLE
TX_DISABLE
Transmitted Signal
Transmitted Signal
t_init
t_init
Figure 4. Power on initialization of SFP transceiver, TX_DISABLE negated
Figure 5. Power on initialization of SFP transceiver, TX_DISABLE asserted
TX_FAULT
Occurrence of transmitter
safety fault
TX_DISABLE
Transmitted Signal
TX_FAULT
TX_DISABLE
Transmitted Signal
t_on
t_off
t_fault
Figure 6. SFP TX_DISABLE timing during normal operation
Figure 7. Detection of transmitter safety fault condition
Occurrence of transmitter
safety fault
Occurrence of transmitter
safety fault
TX_FAULT
TX_FAULT
TX_DISABLE
TX_DISABLE
Transmitted Signal
Transmitted Signal
t_fault
t_reset
t_reset
t_init
*
t_init
*
*
SFP will clear TX_FAULT in < t_init if the fault is transient
*
SFP will clear TX_FAULT in < t_init if the fault is transient
Figure 8. Successful recovery from transient safety fault condition
Figure 9. Unsuccessful recovery from safety fault condition
Occurrence of loss
of signal (LOS)
RX_LOS
t_losson
t_lossoff
Figure 10. Timing of RX_LOS detection
9
Serial Identification
protocol defined for the ATMEL AT24C01A/02/04 family
of components or equivalent components. The informa-
tion obtained from the AFCT-57V6NSZ via the serial ID is
shown in Table 12.
The serial identification (ID) at 2 wire serial bus address
1010000X (A0h) provides access to identification in-
formation that describes the transceiver’s capabilities,
standard interfaces, manufacturer, and other information.
The serial interface uses the 2-wire serial CMOS E2PROM
Table 12. Serial ID: Data Fields - 2-Wire Address A0h
BASE ID FIELDS
Name of field
Data Address
Field Size (Byte)
Description of Field
Context (Hex)
0
1
Identifier
SFP
03h
1
1
1
8
Ext. Identifier
Connector
Transceiver
SFP
04h
07h
00h
00h
00h
02h
00h
00h
00h
00h
01h
0Ch
00h
28h
FFh
00h
00h
00h
00h
41
2
LC
3
—————
—————
—————
1000BASE-LX
—————
—————
—————
—————
8B/10B
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
1
Encoding
1
BR, Nominal
Reserved
x 100 Mbits/sec
—————
40 x 1 km
1
1
Length (9µm) - km
Length (9µm)
Length (50µm)
Length (62.5µm)
Length (Copper)
Reserved
1
Longer than 25.4 km
Not Supported -
Not Supported -
Not Supported -
—————
A
1
1
1
1
16
Vendor name
V
56
A
41
G
47
O
4F
—————
—————
—————
—————
—————
—————
—————
—————
—————
—————
—————
20h
20h
20h
20h
20h
20h
20h
20h
20h
20h
20h
10
Table 12. Serial ID: Data Fields - 2-Wire Address A0h (Continued)
BASE ID FIELDS
Name of field
Data Address
Field Size (Byte)
Description of Field
Context (Hex)
36
1
Reserved
—————
00h
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
Notes:
3
Vendor OUI
00-17-6A
00h
17h
6Ah
41
16
Vendor PN
A
F
46
C
43
T
54
-
2D
5
35
7
37
V
56
5
35
N
4E
S
53
Z
5A
—————
—————
—————
—————
—————
—————
—————
—————
1550 nm
20h
20h
20h
20h
Note 1
Note 1
Note 1
Note 1
06h
0Eh
00h
Note 2
4
2
Vendor Rev.
Laser Wavelength
1
1
Reserved
CC BASE
—————
Check Code
1. These addresses are reserved for Vendor Revision.
2. Data Address 63 is the Check Sum for byte 0 to byte 62 (BASE ID FIELDS).
11
Table 12.- Serial ID: Data Fields - 2-Wire Address A0h (Continued)
EXTENDED ID FIELDS
Data Address
64
Field Size (Byte)
Name of field
Description of Field
—————
Context (Hex)
00h
2
Function
65
TX_DISABLE, TX_FAULT, RX_LOS
Unspecified
1Ah
66
1
BR, max.
00h
67
1
BR, min.
Unspecified
00h
68
16
Vendor S/N
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Note 4
Note 4
Note 4
Note 4
Note 4
Note 4
Note 4
Note 4
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
8
Data Code
Year
(ASCII code)
85
86
Digits of Month
(ASCII code)
87
88
Day of Month
(ASCII code)
89
90
Vendor Specific Lot Code
(ASCII code)
91
92
1
1
Diagnostic
Monitoring Type
-Digital Diagnositic Monitoring-Inter- 68h
nally Calibrated-Average power
93
Enchanced
Option
-Alarm/Warning Flags Implemented- F0h
Soft TX_FAULT and RX_LOS Monitor-
ing
94
95
1
1
SFF-8472
Compliance
Includes Functionality Described in
Rev 9.3 SFF8472
01h
CC_EXT
Check code for Extended ID Fields
Note 5
VENDOR SPECIFIC ID FIELDS
96-255
Notes:
160
00h
3. These addresses are reserved for Vendor SN (serial number).
4. These addresses are reserved for date code information
5. Data Address 95 is the Check Sum for byte 64 to byte 94 (EXTENDED ID FIELDS).
12
Digital Diagnostic Monitoring
tional link and cause for immediate action. Warning flags
indicate conditions outside the normally guaranteed
bounds but not necessarily causes of immediate link fail-
ures. It is recommended that detection of an asserted flag
bit should be verified by a second read of the flag at least
100 msec later. The detail contents of the 2 wire address
A2h are shown in Table 15 to 21.
2 wire serial bus address 1010001X (A2h) is used to access
measurement of transceiver temperature, internally mea-
sured supply voltage, TX bias current, TX optical output
power and RX optical input power which are shown in
Table 13. Each diagnostic parameter has a corresponding
high alarm, low alarm, high warning and low warning
threshold which are shown in Table 14. Alarm flags indi-
cate conditions likely to be associated with an inopera-
Table 13. Diagnostic Parameters
Range
Min.
Max.
Diagnostic Parameter
LSB
Accuracy
Address
Note
Transceiver
Temperature(Temp)
-15
[ºC]
+105
[ºC]
1/256
[ºC]
3
[ºC]
96-97
A 16 bit signed twos
complement value
Supply Voltage (Voltage)
TX Bias Current (Bias)
+2.97
[V]
+3.63
[V]
100
[µV]
3
[%]
98-99
A 16 bit unsigned integer
A 16 bit unsigned integer
A 16 bit unsigned integer
A 16 bit unsigned integer
0
[mA]
+95
[mA]
2.0
[µA]
10
[%]
100-101
102-103
104-105
TX Optical Output Power
(TX Power)
-6
[dBm]
+2
[dBm]
0.1
[µW]
3
[dB]
RX Optical Input Power (RX -25
+3
0.1
3
Power)
[dBm]
[dBm]
[µW]
[dB]
Table 14. Alarm and Warning Thresholds
Warning
Alarm
Low
High
+70
+3.5
80
Low
High
+75
+3.6
90
Parameter
Unit
Transceiver Temperature
ºC
-5
-10
+3
3
Supply Voltage
V
+3.1
5
TX Bias Current
mA
TX Optical Output Power
RX Optical Input Power
dBm
dBm
-4
0
-7
+3
-21
0
-22
+1
13
Table 15. Alarm and Warning Thresholds (2-Wire Address A2h)
Address
# Bytes
Name
Description
00-01
2
Temp High Alarm
MSB at low address
02-03
04-05
06-07
08-09
10-11
12-13
14-15
16-17
18-19
20-21
22-23
24-25
26-27
28-29
30-31
32-33
34-35
36-37
38-39
40-55
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
16
Temp Low Alarm
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
MSB at low address
Reserved for future monitored quantities
Temp High Warning
Temp Low Warning
Voltage High Alarm
Voltage Low Alarm
Voltage High Warning
Voltage Low Warning
Bias High Alarm
Bias Low Alarm
Bias High Warning
Bias Low Warning
TX Power High Alarm
TX Power Low Alarm
TX Power High Warning
TX Power Low Warning
RX Power High Alarm
RX Power Low Alarm
RX Power High Warning
RX Power Low Warning
Reserved
14
Table 16. Calibration constants for External Calibration Option (2-Wire Address A2h)
Address
# Bytes
Name
Description
Content
56-59
4
Rx_PWR(4)
Single precision floating point calibration data -Rx optical power. Bit 7
of byte 56 is MSB. Bit 0 of byte 59 is LSB.
0
60-63
64-67
68-71
72-75
76-77
78-79
80-81
82-83
4
4
4
4
2
2
2
2
Rx_PWR(3)
Single precision floating point calibration data -Rx optical power. Bit 7
of byte 60 is MSB. Bit 0 of byte 63 is LSB.
0
0
1
0
1
0
1
0
Rx_PWR(2)
Single precision floating point calibration data, Rx optical power. Bit 7
of byte 64 is MSB, bit 0 of byte 67 is LSB.
Rx_PWR(1)
Single precision floating point calibration data, Rx optical power. Bit 7
of byte 68 is MSB, bit 0 of byte 71 is LSB.
Rx_PWR(0)
Single precision floating point calibration data, Rx optical power. Bit 7
of byte 72 is MSB, bit 0 of byte 75 is LSB.
Tx_I(Slope)
Tx_I(Offset)
Tx_PWR(Slope)
Tx_PWR(Offset)
Fixed decimal (unsigned) calibration data, laser bias current. Bit 7 of
byte 76 is MSB, bit 0 of byte 77 is LSB.
Fixed decimal (signed two’s complement) calibration data, laser bias
current. Bit 7 of byte 78 is MSB, bit 0 of byte 79 is LSB.
Fixed decimal (unsigned) calibration data, transmitter coupled output
power. Bit 7 of byte 80 is MSB, bit 0 of byte 81 is LSB.
Fixed decimal (signed two’s complement) calibration data, transmitter
coupled output power. Bit 7 of byte 82 is MSB, bit 0 of byte 83 is LSB.
84-85
86-87
2
2
T(Slope)
T(Offset)
Fixed decimal (unsigned) calibration data, internal module tempera-
ture. Bit 7 of byte 84 is MSB, bit 0 of byte 85 is LSB.
1
0
Fixed decimal (signed two’s complement) calibration data, internal
module temperature. Bit 7 of byte 86 is MSB, bit 0 of byte 87 is LSB.
88-89
90-91
2
2
V(Slope)
V(Offset)
Fixed decimal (unsigned) calibration data, internal module supply
voltage. Bit 7 of byte 88 is MSB, bit 0 of byte 89 is LSB.
1
0
Fixed decimal (signed two’s complement) calibration data, internal
module supply voltage. Bit 7 of byte 90 is MSB. Bit 0 of byte 91 is LSB.
92-94
95
3
1
Reserved
Reserved
———
———
Checksum
Byte 95 contains the low order 8 bits of the sumof bytes 0-94.
15
Table 17. A/D Values and Status Bits (2 Wire Address A2h)
Byte
Bit
Name
Description
Converted analog values. Calibrated 16 bit data
96
All
All
All
All
All
All
All
All
All
All
All
All
All
All
Temperature MSB
Temperature LSB
Vcc MSB
Internally measured module temperature.
97
98
Internally measured supply voltage in transceiver.
Internally measured TX Bias Current.
Measured TX output power.
99
Vcc LSB
100
101
102
103
104
105
106
107
108
109
TX Bias MSB
TX Bias LSB
TX Power MSB
TX Power LSB
RX Power MSB
RX Power LSB
Reserved MSB
Reserved LSB
Reserved MSB
Reserved LSB
Measured RX input power.
Reserved for 1st future definition of digitized analog input
Reserved for 1st future definition of digitized analog input
Reserved for 2nd future definition of digitized analog input
Reserved for 2nd future definition of digitized analog input
Optional Status/Control Bits
110
110
110
110
7
6
5
4
TX Disable State
Soft TX Disable
Reserved
Digital state of the TX_DISABLE Input Pin.
Read/write bit that allows software disable of laser.
RX Rate Select State
Digital state of the SFP RX Rate Select Input Pin.Not supported.
Read/write bit that allows software RX rate select.Not supported.
110
3
Soft RX Rate Select
110
110
110
2
1
0
TX Fault
Digital state of the TX_FAULT Output Pin.
Digital state of the RX_LOS Output Pin.
LOS
Data Ready Bar
Indicates transceiver has achieved power up and dataBit remains
high until data is ready to be read at whichdevice sets the bit low.
111
7-0
Reserved
Reserved.
16
Table 18. Alarm and Warning Flag Bits (2-Wire Address A2h)
Byte
Bit
Name
Description
Reserved Optional Alarm and Warning Flag Bits
112
112
112
112
112
112
112
112
113
113
113
113
113
113
113
113
114
115
116
116
116
116
116
116
116
116
117
117
117
117
117
117
117
117
118
119
7
Temp High Alarm
Temp Low Alarm
Vcc High Alarm
Set and latch when internal temperature exceeds high alarm level †
Set and latch when internal temperature is below low alarm level †
Set and latch when internal supply voltage exceeds high alarm level †
Set and latch when internal supply voltage is below low alarm level †
Set and latch when TX Bias current exceeds high alarm level †
Set and latch when TX Bias current is below low alarm level †
Set and latch when TX output power exceeds high alarm level †
Set and latch when TX output power is below low alarm level †
Set and latch when Received Power exceeds high alarm level †
Set and latch when Received Power is below low alarm level †
6
5
4
Vcc Low Alarm
3
TX Bias High Alarm
TX Bias Low Alarm
TX Power High Alarm
TX Power Low Alarm
RX Power High Alarm
RX Power Low Alarm
Reserved Alarm
2
1
0
7
6
5
4
Reserved Alarm
3
Reserved Alarm
2
Reserved Alarm
1
Reserved Alarm
0
Reserved Alarm
All
All
7
Reserved
Reserved
Temp High Warning
Temp Low Warning
Vcc High Warning
Vcc Low Warning
TX Bias High Warning
TX Bias Low Warning
TX Power High Warning
TX Power Low Warning
RX Power High Warning
RX Power Low Warning
Reserved Warning
Reserved Warning
Reserved Warning
Reserved Warning
Reserved Warning
Reserved Warning
Reserved
Set and latch when internal temperature exceeds high warning level †
Set and latch when internal temperature is below low warning level †
Set and latch when internal supply voltage exceeds high warning level †
Set and latch when internal supply voltage is below low warning level †
Set and latch when TX Bias current exceeds high warning level †
Set and latch when TX Bias current is below low warning level †
Set and latch when TX output power exceeds high warning level †
Set and latch when TX output power is below low warning level †
Set and latch when Received Power exceeds high warning level †
Set and latch when Received Power is below low warning level †
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
All
All
Reserved
† Latch state cleared on read, power cycle or the host toggles TX_DISABLE.
17
Table 19. Vendor Specific Memory Address and User EEPROM (2-Wire Address A2h)
Byte
# Byte
Name
Description
120-127
8
Vendor Specific
00h.
128-247
248-255
120
8
User EEPROM
—————
User Writable EEPROM
00h
Table 20. Bit weights (°C) for Temperature Reporting Registers
Most Significant Byte (Byte 96)
Least Significant Byte (Byte 97)
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
SIGN
64
32
16
8
4
2
1
1/2
1/4
1/8
1/16
1/32
1/64 1/128 1/256
Table 21. Digital Temperature Format
Temputer
BINARY
HEXADECIMAL
DECIMAL
+127.996
+125.000
+25.000
+1.004
FRACTION
+127 255/256
+125
HIGH BYTE
01111111
01111101
00011001
00000001
00000001
00000000
00000000
00000000
11111111
11111111
11100111
11011000
10000000
10000000
LOW BYTE
11111111
00000000
00000000
00000001
00000000
11111111
00000001
00000000
11111111
00000000
00000000
00000000
00000001
00000000
HIGH BYTE
LOW BYTE
7F
7D
19
01
01
00
00
00
FF
FF
E7
D8
80
80
FF
00
00
01
00
FF
01
00
FF
00
00
00
01
00
+25
+1 1/256
+1
+1.000
+0.996
+255/256
+1/256
0
+0.004
0.000
-0.004
-1/256
-1
-1.000
-25.000
-40.000
-127.996
-128.000
-25
-40
-127 255/256
-128
18
2 wire addrress 1010001X (A2h)
2 wire addrress 1010000X (A0h)
0
0
95
Alarm and Warning
Thresholds (56 bytes)
Serial ID Defined by
SFP MSA (96 bytes)
55
95
Cal Constants
(40 bytes)
Real Time Diagnostic
Interface (24 bytes)
Vendor Specific
(32 bytes)
119
127
Vendor Specific (8 bytes)
127
User Writable EEPROM
(120 bytes)
Reserved in SFP MSA
(128 bytes)
247
255
Vendor Specific (8 bytes)
255
Figure 11. Serial ID and Digital Diagnostic Memory Map
Timing Characteristics of Serial ID/DDM
The timing characteristics of the serial ID /DDM are listed in Table 22 and Figure 12.
Table 22. Timing Characteristics of Serial ID / DDM
Parameter
Symbol
Min
Max
Unit
SCL Clock Rate
f_clock
.
100
kHz
BUS Free Time between STOP and
START Condition
tBUF
4.7
.
µs
START Condition Hold Time
START Condition Setup Time
Low Period of SCL Clock
High Period of SCL Clock
Data Hold Time
tHD:STA
tSU:STA
tLOW
4.0
4.7
4.7
4.0
0
.
µs
µs
µs
µs
ns
ns
µs
.
.
tHIGH
tHD:DAT
tSU:DAT
tR
.
.
Data Setup Time
250
.
.
Rise Time
1.0
19
SDA
SCL
tBUF
tHD:STA
tF
tR
tLOW
tHIGH
tHD:STA
tSU:STA
tSU:DAT
REPEATED
START
tSU:STO
STOP
START
tHD:DAT
SDA
SCL
D0
ACK
tWR
WORDn
STOP Condition
START Condition
Figure 12. Serial ID and DDM Timing
Host Board
SFP Module
TD+
Protocol Vcc
LASER
DRIVER
100 ohm
TD-
4.7k-10k ohm
TX_FAULT
TX_DISABLE
Recommended
Power Supply Filter
VeeT
VccT
1 uH
10 uF
1 uH
+3.3 V
0.1 uF
VccR
PROTOCOL
IC
0.1 uF 10 uF
SERDes
IC
0.1 uF 10 uF
VeeR
RD+
Note 1
PREAMP
&
100 ohm
RD-
POSTAMP
RX_LOS
RATE_SELECT
4.7k-10k ohm
4.7k-10k ohm
+3.3 V
4.7k-10k ohm
MOD_DEF[0]
MOD_DEF[1]
SERIAL ID
&
PLD/PAL
MOD_DEF[2]
DDM
4.7k-10k ohm
Note 1: Consult the SERDES manufacturer for the termination method.
Figure 13. Recommended Power Supply Filter and Example of SFP Host Board Schematic
20
Connectors and Cables
Laser Eye Safety
The optical interface of the AFCT-57V6NSZ is a duplex LC The Avago Technologies AFCT-57V6NSZ module is a Class
connector which is described in TIA/EIA FOCIS document 1 laser product under the requirements of IEC 60825-
[5]. PC-polished ferrules are recommended in mating 1:1993+A1:1997+A2:2001 and U. S. 21 CFR 1040.10 and
cables for the AFCT-57V6NSZ.
1040.11 except for deviations pursuant to Laser Notice
No. 50, dated July 26, 2001, when used as specified by
Avago. Class 1 products are considered to be safe.
The electrical connection is provided by a card edge
connector which mates with a corresponding socket [1].
In addition the transceiver fits a cage assembly [1] which
also functions as an EMI shield. Contact an Avago sales
office for cable, electrical connector, cage and accessory
ordering information.
Caution -Use of controls or adjustment or performance
of procedures other than those specified herein may
result in hazardous radiation exposure. Any modifica-
tion, adjustment, or use of the AFCT-57V6NSZ module
not specified by Avago may void the certification of the
product and constitute an act of new manufacturing of
a laser product under 21 CFR Subchapter J, and as such
will require recertification by the new manufacturer. This
includes operation beyond the Absolute Maximum Rat-
ings listed in Table 2.
Physical Description
Figure 14 shows the mechanical outline of the Avago
AFCT-57V6NSZ SFP. For a complete description of the
footprint standards, refer to the MSA specification [1].
AFCT-5745xxxZ
AVAGO
####nmLASER PROD
COUNTRY OF ORIGIN YYWW
S/N:########
21CFR(J) CLASS1
14±0.1
[0.551±0.004
1,48
55,5±0.20
13,2±0.1
[0.058]
[2.158±0.008]
[0.516±0.04]
6,25±0.05
[0.246±0.002]
12.7±0.1
[0.500±0.004]
8.45±0.1
[0.333±0.004]
15.5
[0.610]
TX
RX
AREA FOR DUST CAP
+0,1-0
14,46
[0.569]
13,7±0.1
[0.539±0.004]
Notes:
1. Bail delatch is colored BLUE for
SONET/Single-Mode Identification.
Figure 14. AFCT-57V6NSZ Mechanical Outline Drawing
21
3,5±0.3
[0.14±0.01]
1,7±0.9
[0.07±0.4]
41,73±0.5
[1.64±0.02]
PCB
BEZEL
15 MAX
[0.59]
AREA
FOR
DUST CAP
10 REF
[0.39]
TO PCB
15,25±0.1
[0.60±0.004
11.6 REF
[0.46]
CAGE ASSEMBLY
10,4±0.1
0.41±0.004
9,8 MAX
[0.39]
0,35 REF
[0.01]
BELOW PCB
16.25±0.1
[0.64±0.004]
MIN PITCH
MSA SPECIFIED BEZEL
Notes:
1. Bail delatch is colored BLUE for
SONET/Single-Mode Identification.
DIMENSION ARE IN MILLIMETERS [INCHES]
Figure 15. Mounting drawing
Regulatory Information
References
[1] Small Form-factor Pluggable (SFP) Transceiver Multi
Source Agreement, September 14, 2000
This product is under testing with respect to American
and European product safety and electromagnetic com-
patibility regulations. For further information regarding
regulatory certification, refer to the SFP Regulatory Speci-
fication [7] and SFP Application Note [6], or contact the
Avago sales office.
[2] IEEE 802.3z Media Access Control (MAC) Parameters,
Physical Layer, Repeater and Management Parameters
for 1000Mb/s Operation.
[3] SFF-8472, Digital Diagnostic Monitoring Interface
for Optical Transceivers, Draft Revision 9.3, August 1,
2002
[4] A. Widmer & P. Franaszek,“A DC-balanced, partitioned-
block, 8B/10B transmission code “IBM Journal of
Research & Development”, Vol. 27, No. 5, Pg. 440-451,
(Sept. 1983).
[5] TIA/EIA-604-10, “FOCIS 10, Fiber Optic Connector In-
termateability Standard”, 1999
For product information and a complete list of distributors, please go to our web site: www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2009 Avago Technologies. All rights reserved. Obsoletes AV01-0655EN
AV02-0620EN - April 14, 2009
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