AFBR-59R5LZ
Digital Diagnostic 2x7 SFF 850 nm 4.25/2.125/1.0625 GBd,
RoHS-Compliant Optical Transceiver
Data Sheet
Description Features
Avago Technologies AFBR-59R5LZ optical transceiver Fully RoHS Compliant
supports high-speed serial links over multimode optical
Diagnostic Features Per SFF-8472 Diagnostic
fiber at signaling rates up to 4.25 GBd. Compliant with
Monitoring Interface for Optical Transceivers
the Small Form Factor (SFF) Multi Source Agreement
Real time monitoring of:
(MSA) 2x5/2x10 mechanical specifications for LC Duplex
- Transmitted Optical Power
transceivers, ANSI Fibre Channel FC-PI and IEEE 802.3 for
- Received Optical Power
gigabit applications the part is electrically interoperable
- Laser Bias Current
with 2x5 and 2x6 conformant devices. The AFBR-59R5LZ
- Temperature
is dimensionally compliant with the SFF MSA form factor
- Supply Voltage
with the exception of two additional pins for communi-
cating with the diagnostic interface. Wide Temp and supply voltage operation
(-10C to 85C) (3.3 +/- 10%)
As an enhancement to the conventional SFF 2x5 interface
Transceiver Specifications per SFF 2x5 Multi-Source
defined in the SFF MSA (Multi-Source Agreement), the
Agreement and SFF-8472 (revision 9.3)
AFBR-59R5LZ is compliant to SFF-8472 (digital diagnostic
interface for optical transceivers). Using the 2-wire serial - 4.25 GBd Fibre Channel operation
interface defined in the SFF-8472 MSA, the AFBR-59R5LZ for FC-PI 400-M5-SN-I and 400-M6-SN-I
provides real time temperature, supply voltage, laser bias - 2.125 GBd Fibre Channel operation
current, laser average output power and received average for FC-PI 200-M5-SN-1 and 200-M6-SN-I
input power. - 1.0625 GBd Fibre Channel operation
for FC-PI 100-M5-SN-I and 100-M6-SN-I
This information is in addition to conventional SFP/GBIC
Link Lengths at 4.25 Gbd:
base data. The digital diagnostic interface also adds the
- 150 m with 50 um MMF, 70 m with 62.5 um MMF
ability to disable the transmitter (TX_DISABLE), moni-
tor for Transmitter Faults (TX_FAULT) and monitor for Link Lengths at 2.125 Gbd
Receiver Signal Detect (Sig_Det). This 2x7 package also
- 300m with 50um MMF, 150m with 65.5um MMF
includes one dedicated hard pin for TX_FAULT.
Link Lengths at 1.0625 GBd:
- 500 m with 50 m MMF, 300 m with 62.5 m MMF
Application
LC Duplex optical connector interface conforming
Fibre Channel and iSCSI HBA Cards
to ANSI TIA/EIA604-10 (FOCIS 10A)
850nm Vertical Cavity Surface Emitting Laser
Related Products
(VCSEL) Source Technology
AFBR-57R5APZ: 850 nm +3.3 V LC SFP for
IEC 60825-1 Class 1/CDRH Class 1 laser eye safe
4.25/2.125/1.0625 GBd Fibre Channel
Compatible with Gigabit Ethernet
Patent - www.avagotech.com/patents Digital Diagnostic Interface and Serial Identification Compliance Prediction:
The 2-wire serial interface is based on ATMEL AT24C01A Compliance prediction is the ability to determine if an
series EEPROM protocol and signaling detail. Conven- optical transceiver is operating within its operating and
tional EEPROM memory, bytes 0-255 at memory address environmental requirements. AFBR-59R5LZ devices
0xA0, is organized in compliance with SFF-8074i. New provide real-time access to transceiver internal supply
digital diagnostic information, bytes 0-255 at memory voltage and temperature, allowing a host to identify
address 0xA2, is compliant to SFF-8472. The new diag- potential component compliance issues. Received
nostic information provides the opportunity for Predic- optical power is also available to assess compliance of
tive Failure Identification, Compliance Prediction, Fault a cable plant and remote transmitter. When operating
Isolation and Component Monitoring. out of requirements, the link cannot guarantee error free
transmission.
The I2C accessible memory page address 0xB0 is used
internally by SFP for the test and diagnostic purposes
Fault Isolation
and it is reserved.
The fault isolation feature allows a host to quickly pin-
Predictive Failure Identification point the location of a link failure, minimizing system
downtime. For optical links, the ability to identify a fault
The predictive failure feature allows a host to identify
at a local device, remote device or cable plant is crucial
potential link problems before system performance is
to speeding service of an installation. AFBR-59R5LZ real-
impacted. Prior identification of link problems enables
time monitors of Tx_Bias, Tx_Power, Vcc, Temp and Rx
a host to service an application via fail over to a redun-
average power can be used to assess local transceiver
dant link or replace a suspect device, maintaining system
current operating conditions. In addition, status flags Tx
uptime in the process. For applications where ultra-high
Disable and Rx Signal Detect are mirrored in memory and
system uptime is required, a digital SFF provides a means
available via the two-wire serial interface.
to monitor two real-time laser metrics associated with
observing laser degradation and predicting failure: aver-
age laser bias current (Tx_Bias) and average laser optical
power (Tx_Power).
OPTICAL INTERFACE ELECTRICAL INTERFACE
RECEIVER
RD+ (RECEIVE DATA)
AMPLIFICATION
LIGHT FROM FIBER PHOTO-DETECTOR
& QUANTIZATION
RD- (RECEIVE DATA)
Rx SIGNAL DETECT
MOD-DEF2 (SDA)
CONTROLLER & MEMORY
MOD-DEF1 (SCL)
MOD-DEF0
TRANSMITTER
TX_DISABLE
LASER
TD+ (TRANSMIT DATA)
DRIVER &
LIGHT TO FIBER VCSEL
SAFETY
TD- (TRANSMIT DATA)
CIRCUITRY
TX_FAULT
Figure 1. Transceiver Functional Diagram
2