JSH-42L3AD3-5G JDSU [JDS Uniphase Corporation], JSH-42L3AD3-5G Datasheet - Page 33

• Manufacturer Part Number: JSH-42L3AD3-5G
• Description: LW 4x/2x/1x FC SFP with DDM
• Manufacturer: JDSU [JDS Uniphase Corporation]

JSH-42L3AD3-5, JSH-42L3AD3-5G
JSH-42L3AD3-20
LW 4x/2x/1x FC SFP with DDM
Digital Diagnostic Monitor Data Offsets
The Digital Diagnostic Monitor Data page is a single 256-byte page with regard to read and write access off-
sets. There are no mini-page sections within the 256-byte space. Contiguous, sequential accesses, without
modifying the offset, will cycle through offsets 0 to 255 then return to offset 0.
Digital Diagnostic Monitor Data Write Access
The Digital Diagnostic Monitor Data page contains an area defined as a user writable, non-volatile scratch
space, that can be written to by the user, and which will be non-volatile across power cycles and resets. This
space can be accessed sequentially and contiguously within the offsets defined for it (refer to Monitor Data
Table 1 on page 32). If during the course of a sequential, multi-byte write, the offset being written reaches the
end of the user writable space, the next byte of data will be a write attempt to the vendor specific area.
JDSU Product Specification 21111542-001
OCTOBER 2008
Page 33 of 45