AFBR-57R6APZ Avago Technologies US Inc., AFBR-57R6APZ Datasheet - Page 2

• Manufacturer Part Number: AFBR-57R6APZ
• Description: MM 4/2/1 Gb RoHS W Rate Select
• Manufacturer: Avago Technologies US Inc.

Specifications of AFBR-57R6APZ

• Data Rate: 4.25Gbps
• Wavelength: 850nm
• Applications: Ethernet
• Voltage - Supply: 2.97 V ~ 3.63 V
• Connector Type: LC Duplex
• Mounting Type: SFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Digital Diagnostic Interface and Serial
Identification
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 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 AFBR-57R6APZ 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 asso-
ciated 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. AFBR-57R6APZ
devices provide real-time access to transceiver
2
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.
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. AFBR-
57R6APZ 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
AFBR-57R6APZ 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.