DELTA ELECTRONICS, INC.

9

Nov., 2006

Rev. 0B

www.deltaww.com

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)

2 wire address 1010001 X (A2h)

0

0

55

Alarm and Warning Thresholds

(56 bytes)

95

Serial ID Defined by SFP MSA

(96 bytes)

56

95

Cal Constants

(40 bytes)

96

96

119

Real Time Diagnostic Interface

(24 bytes)

127

Vender Specific

(32 bytes)

120

127

Vender Specific

128

128

247

User Writable EEPROM

(120 bytes)

255

Reserved in SFP MSA

(128 bytes)

248

255

Vender Specific

(8 bytes)

Digital Diagnostic Memory Map Specific Data Field Descriptions