FTR-1631-XX DWDM GBIC Preliminary Product Specification
F i n i s a r
IX. Serial Communication Protocol
All Finisar optical GBICs implement serial identification features described for ‘Module
1
Definition “4”’ as outlined in Annex D of the GBIC Specification . These GBICs use an
2
Atmel AT24C01A 128 byte E PROM at address A0H. For details on interfacing with the
E2PROM, see the Atmel data sheet titled “AT24C01A/02/04/08/16 2-Wire Serial CMOS
3
E2PROM.”
Finisar’s DWDM GBICs also support extended diagnostic features as described in
Finisar Applications Note AN-2030, “Digital Diagnostic Monitoring Interface for Optical
2
Transceivers” . A controller IC that monitors system parameters such as laser current,
module temperature, transmitter power, and received power is accessible at address A2H.
Parameter
Symbol Min Typ
Catmel
Max
Units Notes/Conditions
I2C Clock for Atmel
(A0H) and Controller
IC (A2H)
0
100,000
Hz Bus can be driven blind.
2
Table 9. I C Timing Requirements
Ó Finisar Corporation
PRELIMINARY and Confidential
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Rev J, August 2004
FINISAR [ FINISAR CORPORATION. ]
