AFBR-5710Z and AFBR-5715Z
Families of Multi-Mode Small Form Factor Pluggable (SFP) Optical
Transceivers with Optional DMI for Gigabit Ethernet (1.25 GBd)
• ROHS-6 Compliant
• Compliant to IEEE 802.3 Gigabit Ethernet (1.25GBd)
• Optional Digital Diagnostic Monitoring available
- AFBR-5710Z family: without DMI
- AFBR-5715Z family: with DMI
• Per SFF-8472, diagnostic features on AFBR-5715Z
family enable Diagnostic Monitoring Interface for
optical transceivers with real-time monitoring of:
- Transmitted optical power
- Received optical power
- Laser bias current
- Supply voltage
• Transceiver specifications according to SFP Multi-
Source Agreement (SFF-8074i) and SFF-8472, Revision
• Manufactured in an ISO 9001 compliant facility
• Temperature options
- (Extended) -10°C to +85°C
- (Industrial) -40°C to +85°C
• +3.3 V DC power supply
• Industry leading EMI performance for high port den-
• 850 nm Vertical Cavity Surface Emitting Laser (VCSEL)
• Eye safety certified
• LC-Duplex fiber connector compliant
• Ethernet Switch
• Enterprise Router
• Broadband aggregation and wireless infrastructure
• Metro Ethernet multi-service access & provisioning
The AFBR-571xZ family of SFP optical transceivers offers
the customer a wide range of design options, includ-
ing optional DMI features (further described later), two
temperature ranges (extended or industrial), and choice
of standard or bail delatch. The AFBR-5715Z family
targets those applications requiring DMI features. The
AFBR-5710Z family is a streamlined product designed for
those applications where DMI features are not needed.
Throughout this document, AFBR-571xZ will be used to
refer collectively to the product family encompassing this
entire range of product options.
Part Number Options
The AFBR-571xZ SFP family includes the following prod-
Part Number DMI Temperature Latch
AFBR-5710LZ No Extended Standard
AFBR-5710PZ No Extended Bail
AFBR-5710ALZ No Industrial Standard
AFBR-5710APZ No Industrial Bail
AFBR-5715LZ Yes Extended Standard
AFBR-5715PZ Yes Extended Bail
AFBR-5715ALZ Yes Industrial Standard
AFBR-5715APZ Yes Industrial Bail
* Extended Temperature Range is -10 to 85 °C
Industrial Temperature Range is -40 to 85 ° C
• AFBR-5705Z family: Dual-Rate 1.25 GBd Ethernet
(1000BASE-SX) & 1.0625 GBd Fiber Channel SFP with
• ABCU-5710RZ family : 1.25 GBd Ethernet (1000BASE-T)
SFP for Cat5 cable
• AFCT-5705Z family: 1.25 GBd Ethernet (1000BASE-LX)
& 1.0265 GBd Fiber-Channel SFP with DMI
Patent - www.avagotech.com/patents
Figure 1. SFP Block Diagram
LIGHT FROM FIBER
LIGHT TO FIBER
RD+ (RECEIVE DATA)
RDÐ (RECEIVE DATA)
Rx LOSS OF SIGNAL
TD+ (TRANSMIT DATA)
TDÐ (TRANSMIT DATA)
CONTROLLER & MEMORY
TOP OF BOARD
BOTTOM OF BOARD
(AS VIEWED THROUGH TOP OF BOARD)
3 2 1 3 2 1
Figure 2. Pin description of the SFP electrical interface.
The AFBR-571xZ family of optical transceivers are com-
pliant with the specifications set forth in the IEEE802.3
(1000BASE-SX) and the Small Form-Factor Pluggable (SFP)
Multi-Source Agreement (MSA). This family of transceivers
is qualified in accordance with Telcordia GR-468-CORE.
Its primary application is servicing Gigabit Ethernet links
between optical networking equipment.
The AFBR-571xZ offers maxi mum flexibility to designers,
manufacturers, and operators of Gigabit Ethernet net-
working equipment. A pluggable architec ture allows the
module to be installed into MSA standard SFP ports at
any time – even with the host equipment operating and
online. This facilitates the rapid configuration of equip-
ment to precisely the user’s needs – reducing inventory
costs and network downtime. Compared with traditional
transceivers, the size of the Small Form Factor package
enables higher port densities.
Figure 1 illustrates the major functional components of the
AFBR-571xZ. The external configuration of the module is
depicted in Figure 7. Figure 8 depicts the panel and host
The AFBR-571xZ can be installed in or removed from any
MSA-compliant Pluggable Small Form Factor port regard-
less of whether the host equipment is operating or not.
The module is simply inserted, electrical-interface first,
under finger-pressure. Controlled hot-plugging is ensured
by 3-stage pin sequencing at the electrical interface. This
printed circuit board card-edge connector is depicted in
As the module is inserted, first contact is made by the
housing ground shield, discharging any potentially com-
ponent-damaging static electricity. Ground pins engage
next and are followed by Tx and Rx power supplies. Finally,
signal lines are connected. Pin functions and sequencing
are listed in Table 2.
The transmitter section includes the Transmitter Optical
Sub assembly (TOSA) and laser driver circuitry. The TOSA,
containing an 850 nm VCSEL (Vertical Cavity Surface Emit-
ting Laser) light source, is located at the optical interface and
mates with the LC optical connector. The TOSA is driven by
a custom IC, which converts differential logic signals into an
analog laser diode drive current. This Tx driver circuit regu-
lates the optical power at a constant level provided the data
pattern is DC balanced (8B10B code for example).
Transmit Disable (Tx_Disable)
The AFBR-571xZ accepts a TTL and CMOS compatible
transmit disable control signal input (pin 3) which shuts
down the transmitter optical output. A high signal imple-
ments 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 6. 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 2-wire 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 opera-
Transmit Fault (Tx_Fault)
A catastrophic laser fault will activate the transmitter signal,
TX_FAULT, and disable the laser. This signal is an open collec-
tor 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 2-wire serial interface (address
A2, byte 110, bit 2).
Eye Safety Circuit
The AFBR-571xZ provides Class 1 eye safety by design and
has been tested for compliance with the requirements
listed in Table 1. The eye safety circuit continu ously moni-
tors optical output power levels and will disable the trans-
mitter and assert a TX_FAULT signal upon detecting an
unsafe condition. Such unsafe conditions can be created
by inputs from the host board (Vcc fluxuation, unbalanced
code) or faults within the module.
The receiver section includes the Receiver Optical Subas-
sembly (ROSA) and amplification/quantization circuitry. The
ROSA, containing a PIN photodiode and custom trans-im-
pedance preamplifier, is located at the optical interface and
mates with the LC optical connector. The ROSA is mated to
a custom IC that provides post-amplification and quantiza-
tion. Also included is a Loss Of Signal (LOS) detection circuit.
Receiver Loss of Signal (Rx_LOS)
The Loss Of Signal (LOS) output indicates an unusable
optical input power level. The Loss Of Signal thresholds
are set to indicate a definite optical fault has occurred
(e.g., disconnected or broken fiber connection to receiver,
failed transmitter, etc.).
The post-amplification IC 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 fac-
tory-set so that a high output indicates a definite optical
fault has occurred. For the AFBR-5715Z family, Rx_LOS can
also be monitored via the 2-wire serial interface (address
A2h, byte 110, bit 1).
The AFBR-571xZ accepts industry standard differential
signals such as LVPECL and CML within the scope of the
SFP MSA. To simplify board requirements, transmitter bias
resistors and ac coupling capacitors are incorporated, per
SFF-8074i, and hence are not required on the host board.
The module is AC-coupled and internally terminated.
Figure 3 illustrates a recommended interface circuit to
link the AFBR-571xZ to the supporting Physical Layer
Timing diagrams for the MSA compliant control signals
implemented in this module are depicted in Figure 6.
The AFBR-571xZ interfaces with the host circuit board
through twenty I/O pins (SFP electrical connector)
identified by function in Table 2. The AFBR-571xZ high
speed transmit and receive interfaces require SFP MSA
compliant signal lines on the host board. The Tx_Disable,
Tx_Fault, and Rx_LOS lines 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
Figure 3. Typical application configuration.
& EYE SAFETY
NOTE: * 4.7 k Ω < RES < 10 kΩ
1 µH10 µF 0.1 µF
*RES *RES *RES *RES
Digital Diagnostic Interface and Serial Identification
The entire AFBR-571xZ family complies with the SFF-
8074i SFP specification. The AFBR-5715Z family further
complies with SFF-8472, the SFP specification for Digital
Diagnostic Monitoring Interface. Both specifications can
be found at http://www.sffcommittee.org.
The AFBR-571xZ features an EEPROM for Serial ID, which
contains the product data stored for retrieval by host
equipment. This data is accessed via the 2-wire serial
EEPROM protocol of the ATMEL AT24C01A or similar, in
compliance with the industry standard SFP Multi-Source
Agreement. The base EEPROM memory, bytes 0-255 at
memory address 0xA0, is organized in compliance with
SFF-8074i. Contents of this serial ID memory are shown
in Table 10.
The I2C accessible memory page address 0xB0 is used
internally by SFP for the test and diagnostic purposes
and it is reserved.
As an enhancement to the conventional SFP interface
defined in SFF-8074i, the AFBR-5715Z family is compliant
to SFF-8472 (digital diagnostic interface for optical trans-
ceivers). This new digital diagnostic information is stored
in bytes 0-255 at memory address 0xA2.Using the 2-wire
serial interface defined in the MSA, the AFBR-5715Z
provides real time temperature, supply voltage, laser
bias current, laser average output power and received
input power. These parameters are internally calibrated,
per the MSA.
The digital diagnostic interface also adds the ability to
disable the transmitter (TX_DISABLE), monitor for Trans-
mitter Faults (TX_FAULT), and monitor for Receiver Loss
of Signal (RX_LOS).
The new diagnostic information provides the oppor-
tunity for Predictive Failure Identification, Compliance
Prediction, Fault Isolation and Component Monitoring.
Predictive Failure Identification
The 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 redun-
dant 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 ob-
serving laser degradation and predicting failure: average
laser bias current (Tx_Bias) and average laser optical power
Compliance prediction is the ability to determine if an
optical transceiver is operating within its operating and
environmental requirements. AFBR-5715Z 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.
The fault isolation feature allows a host to quickly pin-
point 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. AFBR-5715Z 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 evaluation is a more casual use of the AFBR-
5715Z real-time monitors of Tx_Bias, Tx_Power, Vcc, Tem-
perature 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.
Required Host Board Components
The MSA power supply noise rejection filter is required on
the host PCB to meet data sheet performance. The MSA
filter incorporates an inductor which should be rated 400
mADC and 1 Ω series resistance or better. It should not
be replaced with a ferrite. The required filter is illustrated
in Figure 4.
The MSA also specifies that 4.7 K to 10 KΩ pull-up resis-
tors for TX_FAULT, LOS, and MOD_DEF0,1,2 are required
on the host PCB.
0.1 µF 10 µF
Figure 4. MSA required power supply filter.
The AFBR-571xZ transciever is capable of transmission
at 2 to 550 meters with 50/125 µm fiber, and at 2 to 275
meters with 62.5 125 µm fiber, for 1.25 GBd Ethernet. It
is capable of transmission up to 500m with 50/125 µm
fiber and up to 300m with 62.5/125 µm fiber, for 1.0625
GBd Fiber Channel.
To assist in the transceiver evaluation process, Agilent
offers a 1.25 Gbd Gigabit Ethernet evaluation board
which facilitates testing of the AFBR-571xZ. It can be
obtained through the Agilent Field Organization by ref-
erencing Agilent part number HFBR-0571.
A Reference Design including the AFBR-571xZ and the
HDMP-1687 GigaBit Quad SerDes is available. It may be
obtained through the Agilent Field Sales organization.
See Table 1 for transceiver Regulatory Compliance. Certi-
fication 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 AFBR-571xZ exceeds typical industry standards and is
compatible with ESD levels found in typical manufactur-
ing and operating environments as described in Table 1.
There are two design cases in which immunity to ESD
damage is important.
The first case is during handling of the transceiver prior
to insertion into the transceiver port. To protect the trans-
ceiver, it’s important to use normal ESD handling precau-
tions. These precautions include using grounded wrist
straps, work benches, and floor mats in ESD controlled
areas. The ESD sensitivity of the AFBR-571xZ is compat-
ible with typical industry production environments.
The second case to consider is static discharges to the
exterior of the host equipment chassis after installation.
To the extent that the optical interface is exposed to the
outside of the host equipment chassis, it may be subject
to system-level ESD requirements.
Electromagnetic Interference (EMI)
Equipment using the AFBR-571xZ family of transceivers
is typically required to meet the require ments of the
FCC in the United States, CENELEC EN55022 (CISPR 22)
in Europe, and VCCI in Japan.
The metal housing and shielded design of the AFBR-
571xZ minimize the EMI challenge facing the host equip-
Equipment hosting AFBR-571xZ modules will be sub-
jected to radio-frequency electromagnetic fields in some
environments. The transceiver has excellent immunity to
such fields due to its shielded design.
The AFBR-571xZ transceiver is made of metal and high
strength, heat resistant, chemically resistant, and UL
94V-0 flame retardant plastic.
Customer Manufacturing Processes
This module is pluggable and is not designed for aqueous
wash, IR reflow, or wave soldering processes.
Table 1. Regulatory Compliance
Feature Test Method Performance
(ESD)to the Electrical Pins
JEDEC/EIAJESD22-A114-A Class 2 (> +2000 Volts)
(ESD) to the Duplex LC
Variation of IEC 6100-4-2 Typically withstands at least 25 kV without
damage when the duplex LC connector receptacle
is contacted by a Human Body Model probe
FCC Class B CENELEC EN55022
Class B (CISPR 22A) VCCI Class 1
Applications with high SFP port counts are
expected to be compliant; however, margins are
dependent on customer board and chassis design.
Immunity Variation of IEC 61000-4-3 Typically shows a negligible effect from a 10 V/m
field swept from 80 to 1000 MHz applied to the
transceiver without a chassis enclosure.
Eye Safety US FDA CDRH AEL Class 1
EN(IEC)60825-1,2, EN60950 Class 1
CDRH certification #9720151-57
TUV file RR72102090.01
Component Recognition Underwriters Laboratories and Canadian
Standards Association Joint Component
Recognition for Information Technology
Equipment Including Electrical Business
UL File #E173874
ROHS Compliance Less than 1000ppm of: cadmium, lead, mercury,
hexavalent chromium, polybrominated biphenyls,
and polybrominated biphenyl ethers.
There are no user serviceable parts nor any maintenance
required for the AFBR-571xZ. All adjustments are made at
the factory before shipment to our customers. Tampering
with, modifying, misusing or improp erly handling the
AFBR-571xZ will void the product warranty. It may also
result in improper operation of the AFBR-571xZ circuitry,
and possible overstress of the laser source. Device deg-
radation or product failure may result. Connection of the
AFBR-571xZ to a non-Gigabit Ethernet compliant or non-
Fiber Channel compliant optical source, operating above
the recommended absolute maximum conditions or
operating the AFBR-571xZ in a manner inconsistent with
its design and function may result in hazardous radiation
exposure and may be considered an act of modifying or
manufacturing a laser product. The person(s) performing
such an act is required by law to re-certify and re-identify
the laser product under the provisions of U.S. 21 CFR
Table 2. Pin Description
Pin Name Function/Description
1 VeeT Transmitter Ground 1
2 TX Fault Transmitter Fault Indication 3 1
3 TX Disable Transmitter Disable - Module disables on high or open 3 2
4 MOD-DEF2 Module Definition 2 - Two wire serial ID interface 3 3
5 MOD-DEF1 Module Definition 1 - Two wire serial ID interface 3 3
6 MOD-DEF0 Module Definition 0 - Grounded in module 3 3
7 Rate Selection Not Connected 3
8 LOS Loss of Signal 3 4
9 VeeR Receiver Ground 1
10 VeeR Receiver Ground 1
11 VeeR Receiver Ground 1
12 RD- Inverse Received Data Out 3 5
13 RD+ Received Data Out 3 5
14 VeeR Reciver Ground 1
15 VccR Receiver Power -3.3 V ±5% 2 6
16 VccT Transmitter Power -3.3 V ±5% 2 6
17 VeeT Transmitter Ground 1
18 TD+ Transmitter Data In 3 7
19 TD- Inverse Transmitter Data In 3 7
20 VeeT Transmitter Ground 1
1. TX Fault is an open collector/drain output which should be pulled up externally with a 4.7KΩ – 10 KΩ resistor on the host board to a supply
Table 3. Absolute Maximum Ratings
Parameter Symbol Minimum Maximum Unit Notes
Ambient Storage Temperature
Ts -40 +100 °C 1, 2
Case Temperature TC -40 +85 °C 1, 2
Relative Humidity RH 5 95 % 1
Supply Voltage VCCT,R -0.5 3.8 V 1, 2, 3
Low Speed Input Voltage VIN -0.5 VCC+0.5 V 1
1. Absolute Maximum Ratings are those values beyond which damage to the device may occur if these limits are exceeded. 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.
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 Typical Maximum Unit Notes
Supply Voltage VCC 3.135 3.3 3.465 V 1
1. Recommended Operating Conditions are those within which functional performance within data sheet characteristics is intended.
2. Refer to the Reliability Data Sheet for specific reliability performance predictions.
Table 5. Transceiver Electrical Characteristics
Parameter Symbol Minimum Typical Maximum Unit Notes
Module Supply Current ICC 160 220 mA
Power Dissipation PDISS 530 765 mW
Power Supply Noise
PSNR 100 mVPP 1
Input Voltage (TD +/-)
VI 500 2400 mVPP 2
Output Voltage (RD +/-)
VO 370 1500 2000 mVPP 3
Receive Data Rise & Fall Times Trf 220 ps
Low Speed Outputs:
Transmit Fault (TX_FAULT)
Loss of Signal (LOS), MOD_DEF2
VOH 2.0 VCCT,R+0.3 V 4
VOL 0 0.8 V
Low Speed Inputs:
MOD_DEF 1, MOD_DEF 2
VIH 2.0 VCC V 5
VIL 0 0.8 V
1. Measured at the input of the required MSA Filter on host board.
2. Internally AC coupled and terminated to 100 Ω differential load.
3. Internally AC coupled, but requires a 100 Ω differential termination at or internal to Serializer/Deserializer.
4. Pulled up externally with a 4.7-10 KΩ resistor on the host board to VCCT,R.
5. Mod_Def1 and Mod_Def2 must be pulled up externally with a 4.7-10 KΩ resistor on the host board to VCCT,R.