Delta Electronics Multimode SFP Transceiver LCP-1250A4FDRx Specification Sheet page 9

Enhanced Digital Diagnostic Interface
The memory map in the following describes an extension to the memory map defined in SFP MSA. The enhanced
interface uses the two wire serial bus address 1010001X(A2h) to provide diagnostic information about the module's
present operating conditions.
2 wire address 1010000 X (A0h)
0
Serial ID Defined by SFP MSA
95
96
Vender Specific
127
128
Reserved in SFP MSA
255
Digital Diagnostic Memory Map Specific Data Field Descriptions
Note:
1) Write the password (11h, 11h, 11h, 11h) on the bytes of 123-126 of address A2h then the address of
bytes 128-255 (User Writable) can be read and written.
DELTA ELECTRONICS, INC.
(96 bytes)
(32 bytes)
(128 bytes)
2 wire address 1010001 X (A2h)
0
Alarm and Warning Thresholds
(56 bytes)
55
56
Cal Constants
(40 bytes)
95
96
Real Time Diagnostic Interface
(24 bytes)
119
120
Vender Specific (Note)
127
128
User Writable EEPROM
(120 bytes)
247
248
Vender Specific
(8 bytes)
255
9 Oct., 2006
Rev. 6F
www.deltaww.com