AFCT-701ASDZ datasheet(2/18 Pages) AVAGO

2 / 18 page

Description, continued

Installation

The AFCT-701ASDZ transceiver package is compliant

with the SFF 8432 Improved Pluggable Formfactor hous-

ing specification for the SFP+. It can be installed in any

INF-8074 or SFF-8431/2 compliant Small Form Pluggable

(SFP) port regardless of host equipment operating status

The AFCT-701ASDZ is hot-pluggable, allowing the mod-

ule 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).

Digital Diagnostic Interface and Serial Identification

The two-wire interface protocol and signaling detail

are based on SFF-8431. Conventional EEPROM mem-

ory, bytes 0-255 at memory address 0xA0, is organized

in compliance with SFF-8431. 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 Identifi-

cation, Compliance Prediction, Fault Isolation and Com-

ponent Monitoring.

Predictive Failure Identification

The AFCT-701ASDZ 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 applica-

tions where ultra-high system uptime is required, a digi-

tal 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-701ASDZ devices

provide real-time access to transceiver internal supply

voltage and temperature, allowing a host to identify po-

tential component compliance issues. Received optical

power is also available to assess compliance of a cable

plant and remote transmitter. When operating out of re-

quirements, the link cannot guarantee error free trans-

mission.

Fault Isolation

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 speed-

ing service of an installation. AFCT-701ASDZ 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_DIS-

ABLE 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-

701ASDZ real-time monitors of Tx_Bias, Tx_Power, Vcc,

Temperature and Rx_Power. Potential uses are as debug-

ging aids for system installation and design, and trans-

ceiver parametric evaluation for factory or field qualifi-

cation. For example, temperature per module can be

observed in high density applications to facilitate ther-

mal evaluation of blades, PCI cards and systems.

AFCT-701ASDZ Datasheet(PDF) 2 Page - AVAGO TECHNOLOGIES LIMITED

AFCT-701ASDZ Datasheet(HTML) 2 Page - AVAGO TECHNOLOGIES LIMITED

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Datasheet Download

Link URL