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.

0

95

96

127

128

255

2 wire address 1010000 X (A0h)

Serial ID Defined by SFP MSA (96 bytes)

Vender Specific (32 bytes)

Reserved in SFP MSA (128 bytes)

0

55

56

95

96

119

120

127

128

247

248

255

2 wire address 1010001 X (A2h)

Alarm and Warning Thresholds

(56 bytes)

Cal Constants

(40 bytes)

Real Time Diagnostic Interface (24 bytes)

Vender Specific(Note)

User Writable EEPROM

(120 bytes)

Vender Specific

(8 bytes)

Note:

Digital Diagnostic Memory Map Specific Data Field Descriptions

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.

9

2008/3/18

 

Rev. 0A

DELTA ELECTRONICS, INC.

www.deltaww.com

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Delta Electronics LCP-4250A4CDR manual Enhanced Digital Diagnostic Interface