AVAGO AFCT-57J5APZ Digital diagnostic sfp, 1310nm, fabry perot 3.072/2.4576 gb/s, rohs obsai/cpri compatible optical transceiver Datasheet

AFCT-57J5APZ
Digital Diagnostic SFP, 1310nm, Fabry Perot 3.072/2.4576 Gb/s,
RoHS OBSAI/CPRI Compatible Optical Transceiver
Data Sheet
1310nm, SFP (Small Form Pluggable), Low Voltage (3.3V)
Digital Diagnostic, Optical Transceiver
Description
Features
Avago’s AFCT-57J5APZ optical transceiver supports
high speed serial links over single mode optical fiber at
signaling rates up to 3.072Gb/s for wireless base station
applications involving the OBSAI or CPRI protocols, as
well as related applications. The transceiver is compliant
with Small Form Pluggable (SFP) single-source agreements INF-8074 and SFF-8472 for mechanical and electrical specifications and FOCIS/IEC specifications for optical
duplex LC connectors.
• Fully RoHS Compliant
As an enhancement to the conventional SFP interfaced
defined in INF-8074, the AFCT-57J5APZ is compliant to
SFF-8472 (Digital Diagnostic Interface for Optical Transceivers). Using the 2-wire serial interface defined in SFF8472, the transceiver provides real time temperature,
supply voltage, laser bias current, laser average output
power and received input power. This information is in
addition to conventional SFP base data. The digital diagnostic interface also adds the ability to disable the transmitter and monitor the status of transmitter fault and
receiver loss of signal.
Related Products
• AFBR-57J5AEZ: 850nm +3.3V LC SFP
for OBSAI and CPRI
• AFCT-57R5AEZ: 1310nm +3.3V LC SFP
for 4.25/2.125/1.0625 GBd Fibre Channel
• AFBR-57R5AEZ: 850nm +3.3V LC SFP
for 4.25/2.125/1.0625 GBd Fibre Channel
• AFCT-57D5APZ: 1310nm +3.3V LC SFP
for 8.5/4.25/2.125 GBd Fibre Channel
• Diagnostic Features Per SFF-8472 “Diagnostic
Monitoring Interface for Optical Transceivers”
• Real time monitors of:
- Transmitted Optical Power
- Received Optical Power
- Laser Bias Current
- Temperature
- Supply Voltage
• Industrial Temperature and Supply Voltage Operation
(-40°C to 85°C) (3.3V ± 10%)
• Transceiver Specifications per SFP (INF-8074) and SFF8472 (revision 9.6)
• Up to 7km with 9um fiber for 3.072 Gb/s
• Up to 8km with 9um fiber for 2.4576 Gb/s
• LC Duplex optical connector interface conforming to
ANSI TIA/EIA604-10 (FOCIS 10A)
• 1310nm Fabry Perot Laser (FP) Source Technology
• IEC 60825-1 Class 1/CDRH Class 1 laser eye safe
• Compatible with Fibre Channel and Gigabit Ethernet
applications
Applications
Wireless and cellular base station system interconnect:
OBSAI rates: 3.072 Gb/s, 1.536 Gb/s, 0.768 Gb/s
CPRI rates: 3.072 Gb/s, 2.4576 Gb/s, 1.2288 Gb/s, 0.6144
Gb/s
Digital Diagnostic Interface and Serial Identification
provide real-time access to transceiver internal supply
voltage and temperature, allowing a host to identify
potential component compliance issues. Received optical
power is also available to assess compliance of a cable
plant and remote transmitter. When operating out of requirements, the link cannot guarantee error free transmission.
The 2-wire serial interface is based on ATMEL AT24C01A
series EEPROM protocol and signaling detail. Conventional EEPROM memory, bytes 0-255 at memory address
0xA0, is organized in compliance with INF-8074. New
digital diagnostic information, bytes 0-255 at memory
address 0xA2, is compliant to SFF-8472. The new diagnostic information provides the opportunity for Predictive Failure Identification, Compliance Prediction, Fault
Isolation and Component Monitoring.
Fault Isolation
Predictive Failure Identification
The AFCT-57J5APZ predictive failure feature allows a host
to identify potential link problems before system performance is impacted. Prior identification of link problems
enables a host to service an application via “fail over”
to a redundant link or replace a suspect device, maintaining system uptime in the process. For applications
where ultra-high system uptime is required, a digital SFP
provides a means to monitor two real-time laser metrics
associated with observing laser degradation and predicting failure: average laser bias current (Tx_Bias) and
average laser optical power (Tx_Power).
Compliance Prediction:
Compliance prediction is the ability to determine if an
optical transceiver is operating within its operating and
environmental requirements. AFCT-57J5APZ devices
Optical Interface
Light from Fiber
The fault isolation feature allows a host to quickly
pinpoint the location of a link failure, minimizing
downtime. For optical links, the ability to identify a fault
at a local device, remote device or cable plant is crucial to
speeding service of an installation. AFCT-57J5APZ realtime monitors of Tx_Bias, Tx_Power, Vcc, Temperature and
Rx_Power can be used to assess local transceiver current
operating conditions. In addition, status flags Tx_Disable
and Rx Loss of Signal (LOS) are mirrored in memory and
available via the two-wire serial interface.
Component Monitoring
Component evaluation is a more casual use of the
AFCT-57J5APZ real-time monitors of Tx_Bias, Tx_Power,
Vcc, Temperature and Rx_Power. Potential uses are as
debugging aids for system installation and design, and
transceiver parametric evaluation for factory or field qualification. For example, temperature per module can be
observed in high density applications to facilitate thermal
evaluation of blades, PCI cards and systems.
Electrical Interface
Receiver
Rate Select
Photo-Detector
Amplification
&
Quantization
RD+ (Receive Data)
RD- (Receive Data)
Rx Loss Of Signal
EEPROM
CONTROLLER
MOD-DEF2 (SDA)
EEPROM
MOD-DEF1 (SCL)
MOD-DEF0
Transmitter
Light to Fiber
VCSEL
TX_DISABLE
Laser Driver &
Safety Circuit
TD+ (Transmit Data)
TD- (Transmit Data)
TX_FAULT
Figure 1 . Transceiver Functional Diagram
Transmitter Section
Receiver Section
The transmitter section includes consists of the Transmitter Optical SubAssembly (TOSA) and laser driver circuitry.
The TOSA, containing a 1310nm FABRY PEROT light
source, is located at the optical interface and mates with
the LC optical connector. The TOSA is driven by a custom
IC which uses the incoming differential high speed logic
signal to modulate the laser diode driver current. This
Tx laser driver circuit regulates the optical power at a
constant level provided the incoming data pattern is dc
balanced (8B/10B code, for example).
The receiver section includes the Receiver Optical
SubAssembly (ROSA) and the amplification/quantization circuitry. The ROSA, containing a PIN photodiode and custom transimpedance amplifier, is located
at the optical interface and mates with the LC optical
connector. The ROSA output is fed to a custom IC that
provides post-amplification and quantization.
Transmit Disable (Tx_Disable)
The AFCT-57J5APZ accepts a TTL and CMOS compatible
transmit disable control signal input (pin 3) which shuts
down the transmitter optical output. A high signal implements this function while a low signal allows normal
transceiver operation. In the event of a fault (e.g. eye
safety circuit activated), cycling this control signal resets
the module as depicted in Figure 4. An internal pull up
resistor disables the transceiver transmitter until the host
pulls the input low. Host systems should allow a 10ms
interval between successive assertions of this control
signal. Tx_Disable can also be asserted via the twowire serial interface (address A2h, byte 110, bit 6) and
monitored (address A2h, byte 110, bit 7).
The contents of A2h, byte 110, bit 6 are logic OR’d with
hardware Tx_Disable (pin 3) to control transmitter
operation..
Transmit Fault (Tx_Fault)
A catastrophic laser fault will activate the transmitter
signal, TX_FAULT, and disable the laser. This signal is
an open collector output (pull-up required on the host
board). A low signal indicates normal laser operation
and a high signal indicates a fault. The TX_FAULT will
be latched high when a laser fault occurs and is cleared
by toggling the TX_DISABLE input or power cycling the
transceiver. The transmitter fault condition can also be
monitored via the two-wire serial interface (address A2,
byte 110, bit 2).
Eye Safety Circuit
The AFCT-57J5APZ provides Class 1 (single fault tolerant)
eye safety by design and has been tested for compliance
with the requirements listed in Table 1. The eye safety
circuit continuously monitors the optical output power
level and will disable the transmitter upon detecting an
unsafe condition beyond the scope of Class 1 certification. Such unsafe conditions can be due to inputs from
the host board (Vcc fluctuation, unbalanced code) or a
fault within the transceiver.
Receiver Loss of Signal (Rx_LOS)
The post-amplification IC also includes transition
detection circuitry which monitors the ac level of
incoming optical signals and provides a TTL/CMOS compatible status signal to the host (pin 8). An adequate
optical input results in a low Rx_LOS output while a high
Rx_LOS output indicates an unusable optical input. The
Rx_LOS thresholds are factory set so that a high output
indicates a definite optical fault has occurred. Rx_LOS
can also be monitored via the two-wire serial interface
(address A2h, byte 110, bit 1).
Functional Data I/O
The AFCT-57J5APZ interfaces with the host circuit board
through twenty I/O pins (SFP electrical connector) identified by function in Table 2. The board layout for this
interface is depicted in Figure 6.
The AFCT-57J5APZ high speed transmit and receive interfaces require SFP MSA, OBSAI or CPRI compliant signal
lines on the host board. To simplify board requirements,
biasing resistors and ac coupling capacitors are incorporated into the SFP transceiver module (per INF-8074)
and hence are not required on the host board. The Tx_
Disable, Tx_Fault, Rx_LOS and Rate_Select lines require
TTL lines on the host board (per INF-8074) if used. If an
application chooses not to take advantage of the functionality of these pins care must be taken to ground Tx_
Disable (for normal operation) and Rate_Select is set to
default in the proper state.
Figure 2 depicts the recommended interface circuit to
link the AFCT-57J5APZ to supporting physical layer ICs.
Timing for MSA compliant control signals implemented
in the transceiver are listed in Figure 4.
Application Support
Regulatory Compliance
An Evaluation Kit and Reference Designs are available to
assist in evaluation of the AFCT-57J5APZ . Please contact
your local Field Sales representative for availability and
ordering details.
The AFCT-57J5APZ complies with all applicable laws
and regulations as detailed in Table 1. Certification level
is dependent on the overall configuration of the host
equipment. The transceiver performance is offered as a
figure of merit to assist the designer
Caution
There are no user serviceable parts nor maintenance requirements for the AFCT-57J5APZ. All mechanical adjustments are made at the factory prior to shipment.
Tampering with, modifying, misusing or improperly
handling the AFCT-57J5APZ will void the product
warranty. It may also result in improper operation and
possibly overstress the laser source. Performance degradation or device failure may result. Connection of the
AFCT-57J5APZ to a light source not compliant with these
specifications, operating above maximum operating
conditions or in a manner inconsistent with it’s design
and function may result in exposure to hazardous light
radiation and may constitute an act of modifying or manufacturing a laser product. Persons performing such an
act are required by law to re-certify and re-identify the
laser product under the provisions of U.S. 21 CFR (Subchapter J) and TUV.
Ordering Information
Please contact your local field sales engineer or one of
Avago Technologies franchised distributors for ordering
information. For technical information, please visit Avago
Technologies’ WEB page at www.Avago.com or contact
Avago Technologies Semiconductor Products Customer
Response Center at 1-800-235-0312. For information
related to SFF Committee documentation visit www.sffcommittee.org.
Electrostatic Discharge (ESD)
The AFCT-57J5APZ is compatible with ESD levels found
in typical manufacturing and operating environments
as described in Table 1. In the normal handling and
operation of optical transceivers, ESD is of concern in
two circumstances.
The first case is during handling of the transceiver prior
to insertion into an SFP compliant cage. To protect
the device, it’s important to use normal ESD handling
precautions. These include using of grounded wrist
straps, workbenches and floor wherever a transceiver is
handled.
The second case to consider is static discharges to the
exterior of the host equipment chassis after installation.
If the optical interface is exposed to the exterior of host
equipment cabinet, the transceiver may be subject to
system level ESD requirements.
Electromagnetic Interference (EMI)
Equipment incorporating gigabit transceivers is typically
subject to regulation by the FCC in the United States,
CENELEC EN55022 (CISPR 22) in Europe and VCCI
in Japan. The AFCT-57J5APZ’s compliance to these
standards is detailed in Table 1. The metal housing and
shielded design of the AFCT-57J5APZ minimizes the EMI
challenge facing the equipment designer.
EMI Immunity (Susceptibility)
Due to its shielded design, the EMI immunity of the
AFCT-57J5APZ exceeds typical industry standards.
Flammability
The AFCT-57J5APZ optical transceiver is made of metal
and high strength, heat resistant, chemical resistant and
UL 94V-0 flame retardant plastic.
Table 1. Regulatory Compliance
Feature
Test Method
Performance
Electrostatic Discharge (ESD)
to the Electrical Pins
MIL-STD-883C Method 3015.4
Class 1 (> 2000 Volts)
Electrostatic Discharge (ESD)
to the Duplex LC Receptacle
Variation of IEC 61000-4-2
Typically, no damage occurs with 25 kV when
the duplex LC connector receptacle is contacted
by a Human Body Model probe.
GR1089
10 contacts of 8 KV on the electrical faceplate
with device inserted into a panel.
Electrostatic Discharge (ESD)
to the Optical Connector
Variation of IEC 801-2
Air discharge of 15kV(min) contact to
connector w/o damage
Electromagnetic Interference
(EMI)
FCC Class B
CENELEC EN55022 Class B
(CISPR 22A)
VCCI Class 1
System margins are dependent on customer
board and chassis design.
Immunity
Variation of IEC 61000-4-3
Typically shows no measurable effect from a
10V/m field swept from 10 MHz to 1 GHz.
Laser Eye Safety
and Equipment Type Testing
US FDA CDRH AEL Class 1
US21 CFR, Subchapter J per
Paragraphs 1002.10 and 1002.12.
CDRH certification # TBD
TUV file # TBD
BAUART
··
GEPRUFT
··
TUV
Rheinland
Product Safety
TYPE
APPROVED
Component Recognition
(IEC) EN60825-1: 1994 + A11+A2
(IEC) EN60825-2: 1994 + A1
(IEC) EN60950: 1992 + A1 + A2 + A3
+ A4 + A11
Underwriters Laboratories and Canadian Standards Association Joint Component Recognition for Information Technology
Equipment Including Electrical Business Equipment
UL File # TBD
VCC,T
GND,T
6.8 kΩ
Tx DIS
Tx_DISABLE
Tx FAULT
Tx_FAULT
TD+
.01 µF
100 Ω
TDÐ
.01 µF
4.7 k to 10 kΩ
�
1 µH
LASER DRIVER
VCC,T
0.1 µF
3.3 V
SERDES IC
PROTOCOL IC
10 µF
0.1 µF
1 µH
10 µF
VCC,R
0.1 µF
�
4.7 k to
10 kΩ
�
RD+
�
100 Ω
�
.01 µF
RDRx LOS
LOSS OF SIGNAL
.01 µF
RATE SELECT
3.3 V
GND,R
4.7 k to 10 kΩ
�
MOD_DEF0
Figure 2. Typical Application Configuration
1 µH
VCCT
0.1 µF
1 µH
VCCR
0.1 µF
SFP MODULE
10 µF
3.3 V
0.1 µF
10 µF
HOST BOARD
NOTE: INDUCTORS MUST HAVE LESS THAN 1 Ω SERIES RESISTANCE TO LIMIT VOLTAGE DROP TO THE SFP MODULE.
Figure 3. Recommended Power Supply Filter
POST AMPLIFIER
4.7 k to 10 kΩ
4.7 k to 10 kΩ
�
MODULE DETECT
SCL
SDA
30 kΩ
MOD_DEF1
MOD_DEF2
Table 2. Pin Description
Pin
Name
Function/Description
Notes
1
VeeT
Transmitter Ground
2
TX_FAULT
Transmitter Fault Indication – High indicates a fault condition
Note 1
3
TX_DISABLE
Transmitter Disable – Module optical output disables on high or open
Note 2
4
MOD-DEF2
Module Definition 2 – Two wire serial ID interface data line (SDA)
Note 3
5
MOD-DEF1
Module Definition 1 – Two wire serial ID interface clock line (SCL)
Note 3
6
MOD-DEF0
Module Definition 0 – Grounded in module (module present indicator)
Note 3
7
no connect
8
RX_LOS
Loss of Signal – High indicates loss of received optical signal
Note 4
9
VeeR
Receiver Ground
10
VeeR
Receiver Ground
11
VeeR
Receiver Ground
12
RD-
Inverse Received Data Out
Note 5
13
RD+
Received Data Out
Note 5
14
VeeR
Receiver Ground
15
VccR
Receiver Power + 3.3 V
Note 6
16
VccT
Transmitter Power + 3.3 V
Note 6
17
VeeT
Transmitter Ground
18
TD+
Transmitter Data In
Note 7
19
TD-
Inverse Transmitter Data In
Note 7
20
VeeT
Transmitter Ground
Notes
1. TX_FAULT is an open collector/drain output, which must be pulled up with a 4.7k – 10kW resistor on the host board. When high, this output
indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.
2. TX_DISABLE is an input that is used to shut down the transmitter optical output. It is internally pulled up (within the transceiver) with a 6.8kW
resistor.
Low (0 – 0.8V):
Transmitter on
Between (0.8V and 2.0V): Undefined
High (2.0 – Vcc max) or OPEN: Transmitter Disabled
3. The signals Mod-Def 0, 1, 2 designate the two wire serial interface pins. They must be pulled up with a 4.7k – 10kW resistor on the host board.
Mod-Def 0 is grounded by the module to indicate the module is present
Mod-Def 1 is serial clock line (SCL) of two wire serial interface
Mod-Def 2 is serial data line (SDA) of two wire serial interface
4. RX_LOS (Rx Loss of Signal) is an open collector/drain output that must be pulled up with a 4.7k – 10kW resistor on the host board. When high,
this output indicates the received optical power is below the worst case receiver sensitivity (as defined by the standard in use). Low indicates
normal operation. In the low state, the output will be pulled to < 0.8V.
5. RD-/+ designate the differential receiver outputs. They are AC coupled 100W differential lines which should be terminated with 100W differential
at the host SERDES input. AC coupling is done inside the transceiver and is not required on the host board. The voltage swing on these lines will
be between 500 and 1600 mV differential (250 – 800 mV single ended) when properly terminated.
6. VccR and VccT are the receiver and transmitter power supplies. They are defined at the SFP connector pin. The maximum supply current is 300
mA and the associated in-rush current will typically be no more than 30 mA above steady state after 500 nanoseconds.
7. TD-/+ designate the differential transmitter inputs. They are AC coupled differential lines with 100W differential termination inside the module.
The AC coupling is done inside the module and is not required on the host board. The inputs will accept differential swings of 400 – 2400 mV
(200 – 1200 mV single ended), though it is recommended that values between 500 and 1200 mV differential (250 – 600 mV single ended) be
used for best EMI performance.
Table 3. Absolute Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Unit
Notes
Storage Temperature
TS
-40
100
C
Note 1,2
Case Operating Temperature
TC
-40
100
C
Note 1,2
Relative Humidity
RH
5
95
%
Note 1
Supply Voltage
VccT, R
-0.5
3.8
V
Note 1,2,3
Low Speed Input Voltage
VIN
-0.5
Vcc+0.5
V
Note 1
Notes
1. Absolute Maximum Ratings are those values beyond which damage to the device may occur if these limits are exceeded for other than a short
period of time. See Reliability Data Sheet for specific reliability performance.
2. Between Absolute Maximum Ratings and the Recommended Operating Conditions functional performance is not intended, device reliability is
not implied, and damage to the device may occur over an extended period of time.
3. The module supply voltages, VCCT and VCCR must not differ by more than 0.5V or damage to the device may occur.
Table 4. Recommended Operating Conditions
Parameter
Symbol
Minimum
Maximum
Unit
Notes
Case Operating Temperature
TC
-40
85
°C
Note 1,2
Supply Voltage
VccT, R
2.97
3.63
V
Note 2
0.614
3.072
Gb/s
Note 2
Data Rate
Notes
1. The Ambient Operating Temperature limitations are based on the Case Operating Temperature limitations and are subject to the host system
thermal design.
2. Recommended Operating Conditions are those values for which functional performance and device reliability is implied.
Table 5. Transceiver Electrical Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter
Symbol
Minimum
PSNR
100
Maximum
Unit
Notes
mV
Note 1
-40°C to 70°C
-40°C to 85°C
AC Electrical Characteristics
Power Supply Noise Rejection (peak-peak)
DC Electrical Characteristics
Module supply current
ICC
300
350
mA
mA
Power Dissipation
PDISS
1000
mW
Low Speed Outputs:
Transmit Fault (TX_FAULT),
Loss of Signal (RX_LOS),
MOD-DEF 2
VOH
VccT,R+0.3
V
0.8
V
Low Speed Inputs:
Transmit Disable (TX_DIS), Rate Select
(RATE_SELECT)
MOD-DEF 1, MOD-DEF 2
VIH
2.0
Vcc
V
VIL
0
0.8
V
2.0
VOL
Notes
1. Filter per SFP specification is required on host board to remove 10 Hz to 2 MHz content.
2. Pulled up externally with a 4.7k – 10kW resistor on the host board to 3.3V.
3. Rate_Select, Mod-Def1 and Mod-Def2 must be pulled up externally with a 4.7k – 10kW resistor on the host board to 3.3V.
Note 2
Note 3
Table 6. Transmitter Optical Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter
Symbol
Minimum
Modulated Optical Output Power (OMA)
(Peak-to-Peak)
Tx,OMA
Average Optical Output Power
Pout
-9.5
Center Wavelength
lC
1280
Spectral Width – rms
s,rms
Optical Rise/Fall Time (8.5 Gb/s)
tr, tf
RIN 12 (OMA)
Typical
Maximum
Unit
Notes
µW
Note 2,6
-3.0
dBm
Note 1, 2
1345
nm
300
nm
Note 6
100
ps
20% - 80%
RIN
-120
dB/Hz
Transmitter Contributed Deterministic Jitter
(0.614 to 3.072 Gb/s)
DJ
50
ps
-40/85°C, Note 3
30
ps
-20/85°C, Note 3
Transmitter Contributed Total Jitter
(0.614 to 3.072 Gb/s)
TJ
80
ps
-40/85°C, Note 4, 5
Pout TX_DISABLE Asserted
POFF
60
-35
-20/85°C, Note 4, 5
dBm
Notes:
1. Max Pout is the lesser of Class 1 safety limits (CDRH and EN 60825) or receiver power, max.
2. Into single-mode optical fiber.
3. Contributed DJ is measured on an oscilloscope in average mode with 50% threshold and K28.5 pattern.
4. Contributed RJ is calculated for 1x10-12 BER by multiplying the RMS jitter (measured on a single rise or fall edge) from the oscilloscope by 14.
5. In a network link, each component’s output jitter equals each component’s input jitter combined with each component’s contributed jitter.
Contributed DJ adds in a linear fashion and contributed RJ adds in a RMS fashion.
6. OMA, center wavelength and spectral width must comply with the Triple Tradeoff Curve shown below.
Table 7. Receiver Optical Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter
Symbol
Input Optical Power [Overdrive]
PIN
Input Optical Modulation Amplitude
Peak-to-Peak (0.614 to 3.072 Gb/s)
[Sensitivity]
OMA
Return Loss
Loss of Signal – Assert
Minimum
Typical
Loss of Signal Hysteresis
PD - PA
-3
dBm, avg
Notes
µW, oma
1x10-12 BER , Note 1
41
µW, oma
1x10-15 BER, Note 1
12
dB
-30
PD
Unit
29
PA
Loss of Signal - De-Assert
Maximum
13.8
uW, oma
-20.5
dBm, avg
15
uW, oma
-20.0
dBm, avg
0.5
dB
Note 2
Note 2
Notes
1. Input Optical Modulation Amplitude (commonly known as sensitivity) requires a valid 8B/10B encoded input.
2. These average power values are specified with an Extinction Ratio of 9dB. The loss of signal circuitry responds to valid 8B/10B encoded peak to
peak input optical power, not average power.
Table 8. Transmitter and Receiver Electrical Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter
Symbol
Minimum
Maximum
Unit
Notes
High Speed Data Input:
Transmitter Differential Input Voltage (TD +/-)
VI
400
2400
mV
Note 1
High Speed Data Output:
Receiver Differential Output Voltage (RD +/-)
Vo
500
1600
mV
Note 2
Receiver Contributed Deterministic Jitter
(0.614 to 3.072 Gb/s)
DJ
25
ps
Note 3, 7
Receiver Contributed Total Jitter
(0.614 to 3.072 Gb/s)
TJ
65
ps
Note 4, 6, 7
Receiver Electrical Output Rise & Fall Times
(20-80%)
Tr, tf
200
ps
Note 5
30
Typical
Notes
1. Internally AC coupled and terminated (100 Ohm differential).
2. Internally AC coupled but requires an external load termination (100 Ohm differential).
3. Contributed DJ is measured on an oscilloscope in average mode with 50% threshold and K28.5 pattern
4. Contributed RJ is calculated for 1x10-12 BER by multiplying the RMS jitter (measured on a single rise or fall edge) from the oscilloscope by 14.
5. 20%-80% electrical rise & fall times measured with a 500 MHz signal utilizing a 1010 data pattern.
6. In a network link, each component’s output jitter equals each component’s input jitter combined with each component’s contributed jitter.
Contributed DJ adds in a linear fashion and contributed RJ adds in a RMS fashion.
7. Measured at an input optical power of 48uW, OMA.
10
Table 9. Transceiver SOFT DIAGNOSTIC Timing Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter
Symbol
Hardware TX_DISABLE Assert Time
Minimum
Maximum
Unit
Notes
t_off
10
µs
Note 1
Hardware TX_DISABLE Negate Time
t_on
1
ms
Note 2
Time to initialize, including reset of TX_FAULT
t_init
300
ms
Note 3
Hardware TX_FAULT Assert Time
t_fault
100
µs
Note 4
Hardware TX_DISABLE to Reset
t_reset
µs
Note 5
Hardware RX_LOS DeAssert Time
t_loss_on
100
µs
Note 6
Hardware RX_LOS Assert Time
t_loss_off
100
µs
Note 7
Hardware RATE_SELECT Assert Time
t_rate_high
10
µs
Note 8
Hardware RATE_SELECT DeAssert Time
t_rate_low
10
µs
Note 8
Software TX_DISABLE Assert Time
t_off_soft
100
ms
Note 9
Software TX_DISABLE Negate Time
t_on_soft
100
ms
Note 10
Software Tx_FAULT Assert Time
t_fault_soft
100
ms
Note 11
Software Rx_LOS Assert Time
t_loss_on_soft
100
ms
Note 12
Software Rx_LOS De-Assert Time
t_loss_off_soft
100
ms
Note 13
Software RATE_SELECT Assert Time
t_rate_soft_high
1
ms
Note 14
Software RATE_SELECT DeAssert Time
t_rate_soft_low
1
ms
Note 14
Analog parameter data ready
t_data
1000
ms
Note 15
Serial bus hardware ready
t_serial
300
ms
Note 16
Write Cycle Time
t_write
10
ms
Note 17
Serial ID Clock Rate
f_serial_clock
100
kHz
10
Notes
1. Time from rising edge of TX_DISABLE to when the optical output falls below 10% of nominal.
2. Time from falling edge of TX_DISABLE to when the modulated optical output rises above 90% of nominal.
3. Time from power on or falling edge of Tx_Disable to when the modulated optical output rises above 90% of nominal.
4. From power on or negation of TX_FAULT using TX_DISABLE.
5. Time TX_DISABLE must be held high to reset the laser fault shutdown circuitry.
6. Time from loss of optical signal to Rx_LOS Assertion.
7. Time from valid optical signal to Rx_LOS De-Assertion.
8. Time from rising or falling edge of Rate_Select input until transceiver is in conformance with appropriate specification.
9. Time from two-wire interface assertion of TX_DISABLE (A2h, byte 110, bit 6) to when the optical output falls below 10% of nominal. Measured
from falling clock edge after stop bit of write transaction.
10. Time from two-wire interface de-assertion of TX_DISABLE (A2h, byte 110, bit 6) to when the modulated optical output rises above 90% of
nominal.
11. Time from fault to two-wire interface TX_FAULT (A2h, byte 110, bit 2) asserted.
12. Time for two-wire interface assertion of Rx_LOS (A2h, byte 110, bit 1) from loss of optical signal.
13. Time for two-wire interface de-assertion of Rx_LOS (A2h, byte 110, bit 1) from presence of valid optical signal.
14. Time from two-wire interface selection of Rate_Select input (A2h, byte 110, bit 3) write STOP condition until completion of the receiver
bandwidth switch
15. From power on to data ready bit asserted (A2h, byte 110, bit 0). Data ready indicates analog monitoring circuitry is functional.
16. Time from power on until module is ready for data transmission over the serial bus (reads or writes over A0h and A2h).
17. Time from stop bit to completion of a 1-8 byte write command.
11
Table 10. Transceiver Digital Diagnostic Monitor (Real Time Sense) Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3V ± 10%)
Parameter
Symbol
Min
Units
Notes
Transceiver Internal
Temperature Accuracy
TINT
± 3.0
°C
Temperature is measured internal to the transceiver.
Valid from = -40°C to 85 °C case temperature.
Transceiver Internal
Supply Voltage Accuracy
VINT
± 0.1
V
Supply voltage is measured internal to the transceiver and can, with less accuracy,
be correlated to voltage at the SFP Vcc pin. Valid over 3.3 V ± 10%.
Transmitter Laser DC
Bias Current Accuracy
IINT
± 10
%
IINT is better than ± 10% of the nominal value.
Transmitted Average Optical
Output Power Accuracy
PT
± 3.0
dB
Coupled into single-mode fiber. Valid from 100 uW to 500 uW, avg.
Received Average Optical
Input Power Accuracy
PR
± 3.0
dB
Coupled from single-mode fiber. Valid from 15 uW to 500 uW, avg.
Description of the Digital Diagnostic Data
Transceiver Internal Temperature
Temperature is measured on the AFCT-57J5APZ using
sensing circuitry mounted on the internal PCB. The
measured temperature will generally be cooler than laser
junction and warmer than SFP case and can be indirectly correlated to SFP case or laser junction temperature
using thermal resistance and capacitance modeling. This
measurement can be used to observe drifts in thermal
operating point or to detect extreme temperature fluctuations such as a failure in the system thermal control. For
more information on correlating internal temperature to
case or laser junction contact Avago Technologies.
and supply voltage operating points. The AFCT-57J5APZ
uses a closed loop laser bias feedback circuit to maintain
constant optical power. This circuit compensates for
normal FABRY PEROT parametric variations in quantum
efficiency, forward voltage and lasing threshold due
to changing transceiver operating points. Consistent
increases in laser bias current observed at equilibrium
temperature and supply voltage could be an indication
of laser degradation. For more information on using laser
bias current for predicting laser lifetime, contact Avago
Technologies.
Transceiver Internal Supply Voltage
Transmitted Average Optical Output Power
Supply voltage is measured on the AFCT-57J5APZ using
sensing circuitry mounted on the internal PCB. Transmit
supply voltage (VccT) is monitored for this readback. The
resultant value can be indirectly correlated to SFP VccT
or VccR pin supply voltages using resistance modeling,
but not with the required accuracy of SFF-8472. Supply
voltage as measured will be generally lower than SFP Vcc
pins due to use of internal transient suppression circuitry.
As such, measured values can be used to observe drifts in
supply voltage operating point, be empirically correlated
to SFP pins in a given host application or used to detect
supply voltage fluctuations due to failure or fault in the
system power supply environment. For more information
on correlating internal supply voltage to SFP pins contact
Avago Technologies.
Transmitted average optical power is measured using
sensing circuitry located on the transmitter laser driver
IC and laser optical subassembly. Variations in average
optical power are not expected under normal operation
because the AFCT-57J5APZ uses a closed loop laser bias
feedback circuit to maintain constant optical power. This
circuit compensates for normal FABRY PEROT parametric
variations due to changing transceiver operating points.
Only under extreme laser bias conditions will significant
drifting in transmitted average optical power be observable. Therefore it is recommended Tx average optical
power be used for fault isolation, rather than predictive
failure purposes.
Transmitter Laser DC Bias Current
Laser bias current is measured using sensing circuitry
located on the transmitter laser driver IC. Normal variations in laser bias current are expected to accommodate the impact of changing transceiver temperature
12
Received Average Optical Input Power
Received average optical power is measured using
detecting circuitry located on the receiver preamp and
quantizer ICs. Accuracy is +/- 3.0 dB, but typical accuracy
is +/- 2.0 dB. This measurement can be used to observe
magnitude and drifts in incoming optical signal level for
detecting cable plant or remote transmitter problems.
VCCT,R > 2.97 V
VCCT,R > 2.97 V
TX_FAULT
TX_FAULT
TX_DISABLE
TX_DISABLE
TRANSMITTED SIGNAL
TRANSMITTED SIGNAL
t_init
t_init
t-init: TX DISABLE NEGATED
t-init: TX DISABLE ASSERTED
VCCT,R > 2.97 V
TX_FAULT
TX_FAULT
TX_DISABLE
TX_DISABLE
TRANSMITTED SIGNAL
TRANSMITTED SIGNAL
t_off
t_init
t_on
INSERTION
t-init: TX DISABLE NEGATED, MODULE HOT PLUGGED
t-off & t-on: TX DISABLE ASSERTED THEN NEGATED
OCCURANCE OF FAULT
OCCURANCE OF FAULT
TX_FAULT
TX_FAULT
TX_DISABLE
TX_DISABLE
TRANSMITTED SIGNAL
TRANSMITTED SIGNAL
t_fault
* SFP SHALL CLEAR TX_FAULT IN
< t_init IF THE FAILURE IS TRANSIENT
t-fault: TX FAULT ASSERTED, TX SIGNAL NOT RECOVERED
t_reset
t_init*
t-reset: TX DISABLE ASSERTED THEN NEGATED, TX SIGNAL RECOVERED
OCCURANCE OF FAULT
TX_FAULT
OCCURANCE OF LOSS
TX_DISABLE
LOS
TRANSMITTED SIGNAL
t_loss_on
t_fault
* SFP SHALL CLEAR TX_FAULT IN
< t_init IF THE FAILURE IS TRANSIENT
t_reset
t_init*
t-fault: TX DISABLE ASSERTED THEN NEGATED, TX SIGNAL NOT RECOVERED
Figure 4. Transceiver Timing Diagrams (Module Installed Except Where Noted)
13
t-loss-on & t-loss-off
t_loss_off
Table 12. EEPROM Serial ID Memory Contents – Conventional SFP Memory (Address A0h)
Byte #
Decimal
0
1
2
3
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
36
Data
Hex
03
04
07
00
00
00
00
0A
00
01
00
01
1F
00
08
50
00
00
00
00
41
56
41
47
4F
20
20
20
20
20
20
20
20
20
20
20
00
Notes
SFP physical device
SFP function defined by serial ID only
LC optical connector
Medium distance
Single mode optical media
Compatible with 8B/10B encoded data
3100 MBit/sec nominal bit rate (3.072 Gbit/s)
8 km of single mode fiber @ 3.1GBit/sec
8 km of single mode fiber @ 3.1GBit/sec
“A” - Vendor Name ASCII character
“V” - Vendor Name ASCII character
“A” - Vendor Name ASCII character
“G” - Vendor Name ASCII character
“O” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
“ ” - Vendor Name ASCII character
Byte #
Decimal
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
64
65
66
67
68-83
84-91
92
93
94
95
96 - 255
Data
Hex
00
17
6A
41
46
43
54
2D
35
37
4A
35
41
50
5A
20
20
20
20
20
20
20
20
05
1E
00
Notes
Hex Byte of Vendor OUI 1
Hex Byte of Vendor OUI 1
Hex Byte of Vendor OUI 1
“A” - Vendor Part Number ASCII character
“F” - Vendor Part Number ASCII character
“C” - Vendor Part Number ASCII character
“T” - Vendor Part Number ASCII character
“-” - Vendor Part Number ASCII character
“5” - Vendor Part Number ASCII character
“7” - Vendor Part Number ASCII character
“J” - Vendor Part Number ASCII character
“5” - Vendor Part Number ASCII character
“A” - Vendor Part Number ASCII character
“ P” - Vendor Part Number ASCII character
“ Z” - Vendor Part Number ASCII character
“ ” - Vendor Part Number ASCII character
“ ” - Vendor Part Number ASCII character
“ ” - Vendor Part Number ASCII character
“ ” - Vendor Part Number ASCII character
“ ” - Vendor Part Number ASCII character
“ ” - Vendor Part Number ASCII character
“ ” - Vendor Part Number ASCII character
“ ” - Vendor Part Number ASCII character
Hex Byte of Laser Wavelength 2
Hex Byte of Laser Wavelength 2
Checksum for Bytes 0-62 3
00
1A
00
50
68
F0
03
Hardware SFP TX_DISABLE, TX_FAULT & RX_LOS
80% below nominal rate tolerated (0.614 Gb/s)
Vendor Serial Number ASCII characters 4
Vendor Date Code ASCII characters 5
Digital Diagnostics, Internal Cal, Rx Pwr Avg
A/W, Soft SFP TX_DISABLE, TX_FAULT & RX_LOS
SFF-8472 Compliance to revision 10
Checksum for Bytes 64-94 3
00
Notes:
1. The IEEE Organizationally Unique Identifier (OUI) assigned to Avago Technologies is 00-17-6A (3 bytes of hex).
2. Laser wavelength is represented in 16 unsigned bits. The hex representation of 1310 (nm) is 051E.
3. Addresses 63 and 95 are checksums calculated (per SFF-8472 and SFF-8074) and stored prior to product shipment.
4. Addresses 68-83 specify the AFCT-57J5APZ ASCII serial number and will vary on a per unit basis.
5. Addresses 84-91 specify the AFCT-57J5APZ ASCII date code and will vary on a per date code basis.
14
Table 13. EEPROM Serial ID Memory Contents – Enhanced Feature Set Memory (Address A2h)
Byte #
Decimal
Notes
Byte #
Decimal
Notes
Byte #
Decimal
Notes
0
Temp H Alarm MSB 1
26
Tx Pwr L Alarm MSB 4
104
Real Time Rx Pwr MSB 5
1
Temp H Alarm LSB 1
27
Tx Pwr L Alarm LSB 4
105
Real Time Rx Pwr LSB 5
2
Temp L Alarm MSB 1
28
Tx Pwr H Warning MSB 4
106
Reserved
3
Temp L Alarm LSB 1
29
Tx Pwr H Warning LSB 4
107
Reserved
4
Temp H Warning MSB 1
30
Tx Pwr L Warning MSB 4
108
Reserved
5
Temp H Warning LSB 1
31
Tx Pwr L Warning LSB 4
109
Reserved
6
Temp L Warning MSB 1
32
Rx Pwr H Alarm MSB 5
110
Status/Control - See Table 14
7
Temp L Warning LSB 1
33
Rx Pwr H Alarm LSB 5
111
Reserved
8
Vcc H Alarm MSB 2
34
Rx Pwr L Alarm MSB 5
112
Flag Bits - See Table 15
9
Vcc H Alarm LSB 2
35
Rx Pwr L Alarm LSB 5
113
Flag Bits - See Table 15
10
Vcc L Alarm MSB 2
36
Rx Pwr H Warning MSB 5
114
Reserved
11
Vcc L Alarm LSB 2
37
Rx Pwr H Warning LSB 5
115
Reserved
12
Vcc H Warning MSB 2
38
Rx Pwr L Warning MSB 5
116
Flag Bits - See Table 15
13
Vcc H Warning LSB 2
39
Rx Pwr L Warning LSB 5
117
Flag Bits - See Table 15
14
Vcc L Warning MSB 2
40-55
Reserved
118-127
Reserved
15
Vcc L Warning LSB 2
56-94
External Calibration Constants 6
128-247
Customer Writeable
16
Tx Bias H Alarm MSB 3
95
Checksum for Bytes 0-94 7
248-255
Vendor Specific
17
Tx Bias H Alarm LSB 3
96
Real Time Temperature MSB 1
18
Tx Bias L Alarm MSB 3
97
Real Time Temperature LSB 1
19
Tx Bias L Alarm LSB 3
98
Real Time Vcc MSB 2
20
Tx Bias H Warning MSB 3
99
Real Time Vcc LSB 2
21
Tx Bias H Warning LSB 3
100
Real Time Tx Bias MSB 3
22
Tx Bias L Warning MSB 3
101
Real Time Tx Bias LSB 3
23
Tx Bias L Warning LSB 3
102
Real Time Tx Power MSB 4
24
Tx Pwr H Alarm MSB 4
103
Real Time Tx Power LSB 4
25
Tx Pwr H Alarm LSB 4
Notes:
1. Temperature (Temp) is decoded as a 16 bit signed twos compliment integer in increments of 1/256 degrees C.
2. Supply Voltage (Vcc) is decoded as a 16 bit unsigned integer in increments of 100 uV.
3. Laser bias current (Tx Bias) is decoded as a 16 bit unsigned integer in increments of 2 uA.
4. Transmitted average optical power (Tx Pwr) is decoded as a 16 bit unsigned integer in increments of 0.1 uW.
5. Received average optical power (Rx Pwr) is decoded as a 16 bit unsigned integer in increments of 0.1 uW.
6. Bytes 55-94 are not intended for use with AFCT-57J5APZ, but have been set to default values per SFF-8472.
7. Byte 95 is a checksum calculated (per SFF-8472) and stored prior to product shipment.
15
Table 14. EEPROM Serial ID Memory Contents – Soft Commands (Address A2h, Byte 110)
Bit #
Status/Control Name
Description
Notes
7
TX_ DISABLE State
Digital state of SFP TX_ DISABLE Input Pin (1 = TX_DISABLE asserted)
Note 1
6
Soft TX_ DISABLE
Read/write bit for changing digital state of TX_DISABLE function
Note 1,2
5
reserved
4
reserved
3
reserved
2
TX_FAULT State
Digital state of the SFP TX_FAULT Output Pin (1 = TX_FAULT asserted)
Note 1
1
RX_LOS State
Digital state of the SFP RX_LOS Output Pin (1 = RX_LOS asserted)
Note 1
0
Data Ready (Bar)
Indicates transceiver is powered and real time sense data is ready. (0 = Ready)
Note 1
Notes:
1. The response time for soft commands of the AFCT-57J5APZ is 100 msec as specified by the MSA SFF-8472
2. Bit 6 is logic OR’d with the SFP TX_DISABLE input pin 3 ... either asserted will disable the SFP transmitter.
Table 15. EEPROM Serial ID Memory Contents – Alarms and Warnings (Address A2h, Bytes 112, 113, 116, 117)
Byte
Bit
Flag Bit Name
Description
112
7
Temp High Alarm
Set when transceiver internal temperature exceeds high alarm threshold.
6
Temp Low Alarm
Set when transceiver internal temperature exceeds low alarm threshold.
5
Vcc High Alarm
Set when transceiver internal supply voltage exceeds high alarm threshold.
4
Vcc Low Alarm
Set when transceiver internal supply voltage exceeds low alarm threshold.
3
Tx Bias High Alarm
Set when transceiver laser bias current exceeds high alarm threshold.
2
Tx Bias Low Alarm
Set when transceiver laser bias current exceeds low alarm threshold.
1
Tx Power High Alarm
Set when transmitted average optical power exceeds high alarm threshold.
0
Tx Power Low Alarm
Set when transmitted average optical power exceeds low alarm threshold.
7
Rx Power High Alarm
Set when received average optical power exceeds high alarm threshold.
6
Rx Power Low Alarm
Set when received average optical power exceeds low alarm threshold.
0-5
reserved
7
Temp High Warning
Set when transceiver internal temperature exceeds high warning threshold.
6
Temp Low Warning
Set when transceiver internal temperature exceeds low warning threshold.
5
Vcc High Warning
Set when transceiver internal supply voltage exceeds high warning threshold.
4
Vcc Low Warning
Set when transceiver internal supply voltage exceeds low warning threshold.
3
Tx Bias High Warning
Set when transceiver laser bias current exceeds high warning threshold.
2
Tx Bias Low Warning
Set when transceiver laser bias current exceeds low warning threshold.
1
Tx Power High Warning
Set when transmitted average optical power exceeds high warning threshold.
0
Tx Power Low Warning
Set when transmitted average optical power exceeds low warning threshold.
7
Rx Power High Warning
Set when received average optical power exceeds high warning threshold.
6
Rx Power Low Warning
Set when received average optical power exceeds low warning threshold.
0-5
reserved
113
116
117
16
Figure 5 . Module drawing
17
X
Y
34.5
10
3x
10x
16.25
MIN. PITCH
7.1
8.58
0.85 ± 0.05
0.1 S X Y
2.5
1
2.5
B
PCB
EDGE
11.08
16.25
REF. 14.25
7.2
1.05 ± 0.01
0.1 L X A S
A
1
3.68
5.68
20
PIN 1
2x 1.7
8.48
9.6
4.8
11
10
11.93
SEE DETAIL 1
2.0
11x
11x 2.0
9x 0.95 ± 0.05
0.1 L X A S
5
26.8
10
3x
3
2
41.3
42.3
5
3.2
0.9
10.53
10.93
0.8
TYP.
11.93
1. PADS AND VIAS ARE CHASSIS GROUND
2. THROUGH HOLES, PLATING OPTIONAL
11
10
3. HATCHED AREA DENOTES COMPONENT
AND TRACE KEEPOUT (EXCEPT
CHASSIS GROUND)
4
2 ± 0.005 TYP.
0.06 L A S B S
2x 1.55 ± 0.05
0.1 L A S B S
DETAIL 1
Figure 6. SFP host board mechanical layout
18
LEGEND
20
PIN 1
9.6
20x 0.5 ± 0.03
0.06 L A S B S
4. AREA DENOTES COMPONENT
KEEPOUT (TRACES ALLOWED)
DIMENSIONS ARE IN MILLIMETERS
1.7 ± 0.9
3.5 ± 0.3
41.78 ± 0.5
CASE TEMPERATURE
MEASUREMENT POINT
CAGE ASSEMBLY
15 MAX.
11.73 REF
15.25 ± 0.1
9.8 MAX.
10 REF
(to PCB)
10.4 ± 0.1
PCB
0.4 ± 0.1
(below PCB)
16.25 ± 0.1 MIN. PITCH
DIMENSIONS ARE IN MILLIMETERS
Figure 7 . SFP Assembly Drawing
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, Limited in the United States and other countries.
Data subject to change. Copyright © 2007 Avago Technologies Limited. All rights reserved.
AV02-0680EN - September 11, 2007