AVAGO AFCT-57J7ATPZ Rohs obsai/cpri compatible, digital diagnostic optical transceiver Datasheet

AFCT-57J7ATPZ
1310nm, 20km, 7.373/6.144 Gb/s, Low Voltage (3.3 V)
SFP (Small Form Pluggable), RoHS OBSAI/CPRI
Compatible, Digital Diagnostic Optical Transceiver
Data Sheet
Description
Features
The AFCT-57J7ATPZ optical transceiver supports highspeed serial links over singlemode optical fiber at signaling
rates up to 7.373 Gb/s. Compliant with Small Form
Pluggable (SFP) Multi Source Agreement (MSA) mechanical and electrical specifications, ANSI Fibre Channel FC-PI-3
and compatible with IEEE 802.3 for gigabit applications.
 Diagnostic features per SFF-8472 “Diagnostic
Monitoring Interface for Optical Transceivers”
As an enhancement to the conventional SFP interface
defined in SFF-8074i, the AFCT-57J7ATPZ is compliant
to SFF-8472 (digital diagnostic interface for SFP). Using
the 2-wire serial interface defined in the SFP MSA, the
AFCT-57J7ATPZ provides real time temperature, supply
voltage, laser bias current, laser average output power
and received average input power. This information is in
addition to the conventional SFP data. The digital diagnostic interface also adds the ability to disable the transmitter
(TX_DISABLE), monitor for Transmitter Faults (TX_FAULT),
and monitor for Receiver Loss of Signal (RX_LOS).
 Compliant to Restriction on Hazardous Substances
(RoHS) directive
 Real time monitors of:
– Transmitted average optical power
– Received average optical power
– Laser bias current
– Temperature
– Supply voltage
 High performance 1310 nm DFB laser
 Wide Temperature and Supply Voltage Operation
(-40°C to 85°C) (3.3 V ± 10%)
 Management interface specifications per SFF
Committee SFF 8431
Related Products
 Mechanical specifications per SFF Committee SFF
8432 Improved Pluggable Formfactor "IPF"
 AFBR-57J7APZ: 850nm +3.3V LC SFP
for 7.373/6.144 GBd CPRI/OBSAI
 Up to 20km with single mode fiber for 7.373 Gb/s
 AFBR-57J5APZ: 850nm +3.3V LC SFP
for 3.072/2.456 GBd CPRI/OBSAI
 AFCT-57J5APZ: 1310nm +3.3V LC SFP
for 3.072/2.456 GBd CPRI/OBSAI
 AFCT-57J5ATPZ: 1310nm +3.3V LC SFP
for 3.072/2.456 GBd CPRI/OBSAI
 Up to 20km with single mode fiber for 6.144 Gb/s
 LC Duplex optical connector interface conforming to
ANSI TIA/EIA604-10 (FOCIS 10)
 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 6.144 Gb/s, 3.072 Gb/s, 1.536 Gb/s
– CPRI rates 7.373 Gb/s, 2.458 Gb/s, 1.229 Gb/s
Installation
Compliance Prediction
The AFCT-57J7ATPZ can be installed in any SFF-8074i
compliant Small Form Pluggable (SFP) port regardless of
host equipment operating status. The AFCT-57J7ATPZ is
hot-pluggable, allowing the module to be installed while
the host system is operating and on-line. Upon insertion,
the transceiver housing makes initial contact with the
host board SFP cage, mitigating potential damage due to
Electro-Static Discharge (ESD).
Compliance prediction is the ability to determine if an
optical transceiver is operating within its operating and environmental requirements. AFCT-57J7ATPZ devices 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.
Digital Diagnostic Interface and Serial Identification
The 2-wire serial interface is based on ATMEL AT24C01A
series EEPROM protocol and signaling detail. Conventional SFP EEPROM memory, bytes 0-255 at memory address
0xA0, is organized in compliance with SFF-8074i. 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.
Predictive Failure Identification
The AFCT-57J7ATPZ 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 ultrahigh 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).
2
Fault Isolation
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-57J7ATPZ real-time 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 AFCT57J7ATPZ 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.
OPTICAL INTERFACE
LIGHT FROM FIBER
ELECTRICAL INTERFACE
RECEIVER
PHOTO-DETECTOR
AMPLIFICATION
& QUANTIZATION
RD+ (RECEIVE DATA)
RD– (RECEIVE DATA)
Rx LOSS OF SIGNAL
MOD-DEF2 (SDA)
CONTROLLER & MEMORY
TRANSMITTER
LIGHT TO FIBER
DFB Laser
LASER
DRIVER &
SAFETY
CIRCUITRY
MOD-DEF1 (SCL)
MOD-DEF0
TX_DISABLE
TD+ (TRANSMIT DATA)
TD– (TRANSMIT DATA)
TX_FAULT
Figure 1. Transceiver functional diagram.
Transmitter Section
The transmitter section includes a 1310-nm distributed
feedback (DFB) laser and a transmitter driver circuit. The
driver circuit maintains a constant average optical power
output with Fibre Channel and Ethernet 8B/10B coded
data. Optical connection to the transmitter is provided via
an LC 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).
Transmit Disable (TX_DISABLE)
The AFCT-57J7ATPZ 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 10 ms interval between
successive assertions of this control signal. Tx_Disable can
also be asserted via the two-wire serial interface (address
A2h, byte 110, bit 6) and monitored (address A2h, byte
110, bit 7).
3
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-57J7ATPZ 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 Section
Caution
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.
There are no user serviceable parts nor maintenance requirements for the AFCT-57J7ATPZ. All mechanical adjustments
are made at the factory prior to shipment. Tampering with,
modifying, misusing or improperly handling the AFCT57J7ATPZ 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-57J7ATPZ to a light source
not compliant with ANSI FC-PI or IEEE 802.3 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.
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-57J7ATPZ 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-57J7ATPZ high speed transmit and receive interfaces require SFP MSA 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 SFF-8074i) and hence are
not required on the host board. The Tx_Disable, Tx_Fault,
Rx_LOS require TTL lines on the host board (per SFF-8074i)
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).
Figure 2 depicts the recommended interface circuit to
link the AFCT-57J7ATPZ to supporting physical layer ICs.
Timing for MSA compliant control signals implemented in
the transceiver are listed in Figure 4.
Application Support
An Evaluation Kit and Reference Designs are available to
assist in evaluation of the AFCT-57J7ATPZ. Please contact
your local Field Sales representative for availability and
ordering details.
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.avagotech.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.
Regulatory Compliance
The AFCT-57J7ATPZ 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.
Electrostatic Discharge (ESD)
The AFCT-57J7ATPZ 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.
4
Electromagnetic Interference (EMI)
EMI Immunity (Susceptibility)
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-57J7ATPZ’s compliance to these standards is
detailed in Table 1. The metal housing and shielded design
of the AFCT-57J7ATPZ minimizes the EMI challenge facing
the equipment designer.
Due to its shielded design, the EMI immunity of the AFCT57J7ATPZ exceeds typical industry standards.
Flammability
The AFCT-57J7ATPZ 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 2 (> 1000 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 15 kV (min.) contact to
connector without 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 10 V/m 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 #9521220-158
TUV #30783705.001
BAUART
¨
GEPRUFT
¨
TUV
Rheinland
Product Safety
TYPE
APPROVED
Component Recognition
Restriction on Hazardous
Substances (RoHS) Compliance
5
(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 #E173874
Less than 1000 ppm of cadmium, lead, mercury,
hexavalent chromium, polybrominated biphe
nyls, and polybrominated biphenyl ethers.
VCC,T
GND,T
6.8 k
Tx DIS
Tx FAULT
Tx_DISABLE
Tx_FAULT
TD+
100 
TD–
1 H
VCC,T
0.1 F
3.3 V
10 F
SERDES IC
PROTOCOL IC
LASER DRIVER
4.7 k to 10 k
0.1 F
1 H
10 F
VCC,R
VCC,R
0.1 F
4.7 k to
10 k
50 
VCC,R
50 
RD+
100 
RD–
Rx LOS
LOSS OF SIGNAL
POST AMPLIFIER
3.3 V
GND,R
4.7 k to 10 k
4.7 k to 10 k
MOD_DEF0
4.7 k to 10 k
MODULE DETECT
SCL
SDA
Figure 2. Typical application configuration.
VCCT
VCCR
SFP MODULE
1 H
0.1 F
1 H
0.1 F
10 F
0.1 F
10 F
3.3 V
HOST BOARD
NOTE: INDUCTORS MUST HAVE LESS THAN 1 W SERIES RESISTANCE TO LIMIT VOLTAGE DROP TO THE SFP MODULE.
Figure 3. Recommended power supply filter.
6
MOD_DEF1
MOD_DEF2
Table 2. Pin Description
Pin
Name
Function/Description
1
VeeT
Transmitter Ground
Notes
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
Note 3
6
MOD-DEF0
Module Definition 0 – Grounded in module (module present indicator)
7
No Connect
Internal pull down 100kOhm to ground
8
RX_LOS
Loss of Signal – High indicates loss of received optical signal
9
No Connect
Internal pull down 100kOhm to 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
Note 4
Notes:
1. TX_FAULT is an open collector/drain output, which must be pulled up with a 4.7 k – 10 k 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 < 0.8 V.
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 6.8 k
resistor.
Low (0 – 0.8 V):
Transmitter on
Between (0.8 V and 2.0 V):
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 4.7 k – 10 k 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 4.7 k – 10 k 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 < 0.8 V.
5. RD-/+ designate the differential receiver outputs. They are AC coupled 100  differential lines which should be terminated with 100  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 370 and 850 mV differential (185 – 425 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 2 microseconds.
7. TD-/+ designate the differential transmitter inputs. They are AC coupled differential lines with 100  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 180 – 1200 mV
(90 – 600 mV single ended).
7
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
85
C
Note 1, 2
Relative Humidity
RH
5
85
%
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 0.5 V or damage to the device may occur.
Table 4. Recommended Operating Conditions
Parameter
Symbol
Minimum
Maximum
Unit
Notes
Supply Voltage
VccT, R
2.97
3.63
V
Note 2
Data Rate
1.288
7.373
Gb/s
Note 2
Tcase
-40
85
°C
Note 1, 2
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 = 3.3 V ± 10%)
Parameter
Symbol
Minimum
Typical
Maximum
Unit
Notes
mV
Note 1
AC Electrical Characteristics
Power Supply Noise Rejection (peak-peak)
PSNR
100
DC Electrical Characteristics
Module Supply Current
ICC
Power Dissipation
PDISS
Low Speed Outputs:
Transmit Fault (TX_FAULT), Loss of Signal
(RX_LOS), MOD-DEF 2
VOH
Low Speed Inputs:
Transmit Disable (TX_DIS),
MOD-DEF 1, MOD-DEF 2
VIH
VIL
300 mA @ 70°C
350 mA @ 85°C
1000
mW
VccT,R+0.3
V
0.6
V
2.0
Vcc
V
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 4.7 k – 10 k resistor on the host board to 3.3 V.
3. Pulled up externally with a 4.7 k – 10 k resistor on the host board to 3.3 V.
8
Note 2
Note 3
Table 6. Transmitter and Receiver Electrical Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3 V ± 10%)
Parameter
Symbol
Minimum
High Speed Data Input:
Transmitter Differential Input Voltage (TD +/-)
VI
High Speed Data Output:
Receiver Differential Output Voltage (RD +/-)
Vo
Receiver Contributed Deterministic Jitter
(2.457 to 7.373 Gb/s)
Typical
Maximum
Unit
Notes
180
1200
mV
Note 1
370
850
mV
Note 2
DJ
15
ps
Note 3, 5
Receiver Contributed Total Jitter
(2.457 to 7.373 Gb/s)
TJ
40
ps
Note 5
Receiver Electrical Output Rise & Fall Times
(20-80%)
tr, tf
85
ps
Note 4
30
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. 20%-80% electrical rise & fall times measured with a 500 MHz signal utilizing a 1010 data pattern.
5. Measured at an input optical power of 154W.
Table 7. Transmitter Optical Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3 V ± 10%)
Parameter
Symbol
Minimum
Modulated Optical Output Power (OMA)
(Peak-to-Peak) (1.288 to 7.373 Gb/s)
Tx,OMA
290
Average Optical Output Power
Pout
-8.4
Center Wavelength
C
1260
-20 dB Spectral Width
Side Mode Supression
Typical
Maximum
Unit
Notes
μW
Note 2
dBm
Note 1, 2
1360
nm
1.0
nm
30
dB
Optical Rise/Fall Time
tr, tf
60
ps
RIN 12 (OMA)
RIN
-128
dB/Hz
Transmitter Contributed Total Jitter
(2.457 to 7.373 Gb/s)
DJ
25
ps
Transmitter Contributed Total Jitter
(2.457 to 7.373 Gb/s)
TJ
50
ps
Pout TX_DISABLE Asserted
POFF
-35
dBm
20% - 80%
Notes:
1. Max Pout is the lesser of Class 1 safety limits (CDRH and EN 60825) or receiver power, max.
2. Into 9/125 m single-mode optical fiber.
3. Contributed DJ is measured on an oscilloscope in average mode with 50% threshold and K28.5 pattern. Contributed TJ is the sum of contributed
RJ and contributed DJ. 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. Per FC-PI (Table 9 – SM jitter output, note 1), the actual contributed RJ is allowed to increase above its limit if the actual
contributed DJ decreases below its limits, as long as the component output DJ and TJ remain within their specified FC-PI maximum limits with the
worst case specified component jitter input.
9
Table 8. Receiver Optical Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3 V ± 10%)
Parameter
Symbol
Input Optical Power [Overdrive]
PIN
Input Optical Modulation Amplitude (Peak-to-Peak)
(2.457 to 7.373 Gb/s) [Sensitivity]
OMA
Return Loss
Min.
Typ.
Max.
Unit
+ 0.5
dBm, avg
W, oma
W, oma
40
57
12
Loss of Signal – Assert
PA
Loss of Signal – De-Assert
PD
Loss of Signal Hysteresis
PD - PA
Notes
1X10-12 BER, Note 1
1X10-15 BER, Note 1
dB
13.8
W, oma
-16.0
dBm, oma
-30
dBm, oma
0.5
dB
Notes:
1. Input Optical Modulation Amplitude (commonly known as sensitivity) requires a valid 8B/10B encoded input.
Table 9. Transceiver Timing Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3 V ± 10%)
Parameter
Symbol
Maximum
Unit
Notes
Hardware TX_DISABLE Assert Time
t_off
Minimum
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
Software TX_DISABLE Assert Time
t_off_soft
100
ms
Note 8
Software TX_DISABLE Negate Time
t_on_soft
100
ms
Note 9
10
Software Tx_FAULT Assert Time
t_fault_soft
100
ms
Note 10
Software Rx_LOS Assert Time
t_loss_on_soft
100
ms
Note 11
Software Rx_LOS De-Assert Time
t_loss_off_soft
100
ms
Note 12
Analog parameter data ready
t_data
1000
ms
Note 13
Serial bus hardware ready
t_serial
300
ms
Note 14
Write Cycle Time
t_write
10
ms
Note 15
Serial ID Clock Rate
f_serial_clock
400
kHz
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 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.
9. 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.
10. Time from fault to two-wire interface TX_FAULT (A2h, byte 110, bit 2) asserted.
11. Time for two-wire interface assertion of Rx_LOS (A2h, byte 110, bit 1) from loss of optical signal.
12. Time for two-wire interface de-assertion of Rx_LOS (A2h, byte 110, bit 1) from presence of valid optical signal.
13. From power on to data ready bit asserted (A2h, byte 110, bit 0). Data ready indicates analog monitoring circuitry is functional.
14. Time from power on until module is ready for data transmission over the serial bus (reads or writes over A0h and A2h).
15. Time from stop bit to completion of a 1-8 byte write command.
10
Table 10. Transceiver Digital Diagnostic Monitor (Real Time Sense) Characteristics
(TC = -40°C to 85°C, VccT, VccR = 3.3 V ± 10%)
Parameter
Symbol
Min.
Units
Notes
Transceiver Internal Temperature
Accuracy
TINT
±3.0
°C
Temperature is measured internal to the transceiver.
Valid from = -10°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 9/125 μm single-mode fiber. Valid from
100 W to 500 W, average.
Received Optical Input Power
Accuracy
PR
±3.0
dB
Coupled from 9/125 μm single-mode fiber. Valid from
30 W to 500 W, average.
VCCT,R > 2.97 V
VCCT,R > 2.97 V
TX_FAULT
TX_DISABLE
TX_FAULT
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_init
INSERTION
t-init: TX DISABLE NEGATED, MODULE HOT PLUGGED
t_off
t-off & t-on: TX DISABLE ASSERTED THEN NEGATED
OCCURANCE OF FAULT
OCCURANCE OF FAULT
TX_FAULT
TX_FAULT
TX_DISABLE
TX_DISABLE
t_on
TRANSMITTED SIGNAL
TRANSMITTED SIGNAL
t_fault
t-fault: TX FAULT ASSERTED, TX SIGNAL NOT RECOVERED
t_reset
* SFP SHALL CLEAR TX_FAULT IN
t_init*
< t_init IF THE FAILURE IS TRANSIENT
t-reset: TX DISABLE ASSERTED THEN NEGATED, TX SIGNAL RECOVERED
OCCURANCE OF FAULT
TX_FAULT
TRANSMITTED SIGNAL
LOS
t_fault
t_reset
* SFP SHALL CLEAR TX_FAULT IN
t_init*
< t_init IF THE FAILURE IS TRANSIENT
t-fault: TX DISABLE ASSERTED THEN NEGATED, TX SIGNAL NOT RECOVERED
Figure 4. Transceiver timing diagrams (module installed except where noted).
11
OCCURANCE
OF LOSS
OPTICAL SIGNAL
TX_DISABLE
t_loss_on
t-loss-on & t-loss-off
t_loss_off
Table 12. EEPROM Serial ID Memory Contents – Conventional SFP Memory (Address A0h)
Byte # Data
Decimal Hex
Notes
Byte #
Decimal
Data
Hex
Notes
0
03
SFP physical device
37
00
Hex Byte of Vendor OUI[2]
1
04
SFP function defined by serial ID only
38
17
Hex Byte of Vendor OUI[2]
2
07
LC optical connector
39
6A
Hex Byte of Vendor OUI[2]
3
00
40
41
“A” - Vendor Part Number ASCII character
4
5
00
00
41
42
46
43
“F” - Vendor Part Number ASCII character
“C” - Vendor Part Number ASCII character
6
00
7
12
8
00
9
01
10
00
11
01
Compatible with 8B/10B encoded data
48
37
“7” - Vendor Part Number ASCII character
12
4A
7400 MBit/sec nominal bit rate (7.373 Gbit/s)
41
41
“A” - Vendor Part Number ASCII character
13
00
54
54
“T” - Vendor Part Number ASCII character
14
14
20 km of single mode fiber @ 7.373 GBit/sec
50
50
“P” - Vendor Part Number ASCII character
15
00
5A
5A
“Z” - Vendor Part Number ASCII character
16
00
53
20
“ ” - Vendor Part Number ASCII character
17
00
54
20
“ ” - Vendor Part Number ASCII character
18
00
55
20
“ ” - Vendor Part Number ASCII character
19
00
56
20
“ ” - Vendor Part Number ASCII character
20
41
“A” - Vendor Name ASCII character
57
20
“ ” - Vendor Part Number ASCII character
21
56
“V” - Vendor Name ASCII character
58
20
“ ” - Vendor Part Number ASCII character
22
41
“A” - Vendor Name ASCII character
59
20
“ ” - Vendor Part Number ASCII character
23
47
“G” - Vendor Name ASCII character
60
05
Hex Byte of Laser Wavelength[3]
24
4F
“O” - Vendor Name ASCII character
61
1E
Hex Byte of Laser Wavelength[3]
25
20
“ ” - Vendor Name ASCII character
62
00
26
20
“ ” - Vendor Name ASCII character
63
27
20
“ ” - Vendor Name ASCII character
64
00
28
20
“ ” - Vendor Name ASCII character
65
1A
29
20
“ ” - Vendor Name ASCII character
66
00
30
20
“ ” - Vendor Name ASCII character
67
00
31
20
“ ” - Vendor Name ASCII character
68-83
Vendor Serial Number ASCII characters[5]
32
20
“ ” - Vendor Name ASCII character
84-91
Vendor Date Code ASCII characters[6]
33
20
“ ” - Vendor Name ASCII character
92
68
Digital Diagnostics, Internal Cal, Rx Pwr
Avg
34
20
“ ” - Vendor Name ASCII character
93
F0
A/W, Soft SFP TX_DISABLE, TX_FAULT,
& RX_LOS
35
20
“ ” - Vendor Name ASCII character
94
01
SFF-8472 Compliance to revision 9.3
36
00
43
54
“T” - Vendor Part Number ASCII character
Long distance
44
2D
“-” - Vendor Part Number ASCII character
45
35
“5” - Vendor Part Number ASCII character
Single Mode (SM)
46
37
“7” - Vendor Part Number ASCII character
47
4A
“J” - Vendor Part Number ASCII character
Checksum for Bytes 0-62[4]
Checksum for Bytes 64-94[4]
95
96 - 255
Hardware SFP TX_DISABLE, TX_FAULT,
& RX_LOS
00
Notes:
1. TBD.
2. The IEEE Organizationally Unique Identifier (OUI) assigned to Avago Technologies is 00-17-6A (3 bytes of hex).
3. Laser wavelength is represented in 16 unsigned bits. The hex representation of 1310 (nm) is 051E.
4. Addresses 63 and 95 are checksums calculated (per SFF-8472 and SFF-8074) and stored prior to product shipment.
5. Addresses 68-83 specify the AFCT-57J7ATPZ ASCII serial number and will vary on a per unit basis.
6. Addresses 84-91 specify the AFCT-57J7ATPZ ASCII date code and will vary on a per date code basis.
12
Table 13: EEPROM Serial ID Memory Contents – Enhanced Feature Set Memory (Address A2h)
Byte #
Decimal
Notes
Byte #
Decimal
Notes
Byte #
Decimal
0
Temp H Alarm MSB[1]
26
Tx Pwr L Alarm MSB[4]
104
Real Time Rx average
MSB[5]
1
Temp H Alarm LSB[1]
27
Tx Pwr L Alarm LSB[4]
105
Real Time Rx average
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°C.
2. Supply Voltage (Vcc) is decoded as a 16 bit unsigned integer in increments of 100 V.
3. Laser bias current (Tx Bias) is decoded as a 16 bit unsigned integer in increments of 2 A.
4. Transmitted average optical power (Tx Pwr) is decoded as a 16 bit unsigned integer in increments of 0.1 W.
5. Received average optical power (Rx Pwr) is decoded as a 16 bit unsigned integer in increments of 0.1 W.
6. Bytes 55-94 are not intended for use with AFCT-57J7ATPZ, 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.
13
Notes
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-57J7ATPZ 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 optical power exceeds high alarm threshold
6
Rx Power Low Alarm
Set when received 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
113
116
117
14
7
Rx Power High Warning
Set when received optical power exceeds high warning threshold
6
Rx Power Low Warning
Set when received optical power exceeds low warning threshold
0-5
Reserved
AF
CT
-5
7
J7
AT
PZ
AFCT-57J7ATPZ
Figure 5. Module drawing.
15
X
Y
34.5
10x 1.05 0.01
 0.1 L X A S
1
16.25
MIN. PITCH
B
PCB
EDGE
16.25 14.2511.08
REF.
8.58
10
3x
7.2
7.1
 0.85 0.05
 0.1 S X Y
A
1
3.68
2.5
2.5
5.68
20
PIN 1
2x 1.7
8.48
9.6
2.0
11x
26.8
3
4.8
11
10
10
3x
5
11x 2.0
SEE DETAIL 1
9x 0.95 0.05
 0.1 L X A S
2
41.3
42.3
5
3.2
9.6
0.9
10.93
11.93
11
10
4
2 0.005 TYP.
0.06 L A S B S
DETAIL 1
Figure 6. SFP host board mechanical layout.
16
LEGEND
10.53
0.8
TYP.
2x 1.55 0.05
 0.1 L A S B S
20x 0.5 0.03
0.06 L A S B S
20
PIN 1
11.93
1.
PADS AND VIAS ARE CHASSIS GROUND
2.
THROUGH HOLES, PLATING OPTIONAL
3.
HATCHED AREA DENOTES COMPONENT
AND TRACE KEEPOUT (EXCEPT
CHASSIS GROUND)
4.
AREA DENOTES COMPONENT
KEEPOUT (TRACES ALLOWED)
DIMENSIONS ARE IN MILLIMETERS
1.7 0.9
3.5 0.3
41.78 0.5
Tcase REFERENCE 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.
Customer Manufacturing Processes
This module is pluggable and is not designed for aqueous
wash, IR reflow, or wave soldering processes.
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 © 2005-2011 Avago Technologies. All rights reserved.
AV02-1833EN - September 29, 2011