every sfp with a twi?

thresholder Guest #6957646
Rate this post
• ▲ useful
▼ not useful 
hi,

do all SFPs have a Two wire interface?
Also DACs?
I saw some with i2c in some shops...


In SFF 8431 is a description of twi:

CHAPTER 4 SFP+ 2- WIRE INTERFACE

But it doesn't describe the information which can be read right?
It referres to:

"SFP+ management memory map is specified by SFF-8472."

And it sais:

"this document defines an enhanced memory map with a digital diagnostic 
monitoring interface for optical
transceivers that allows pseudo real time access to device operating 
parameters."

* So is it only a must-have for optical SFPs?

* Or a must-have for all SFPs?

* Do I need to configure it always first? (with my NIC it works fine I 
guess. but another devices doesnt connect..)


Thank you :D
Reply Quote Edit Move Thread sperren Anmeldepflicht aktivieren Anpinnen Delete topic Thread mit anderem zusammenführen Report post
Watch this topic

Reply

A question of your own? This thread is over 4 years old. Ask it in a thread of its own – more people read along there, and it gets answered more often and sooner.

Start a new thread

A fix, an addition or feedback on this thread? Then reply here.

Formatting
  • [c]C-Code[/c]
  • [code]code in other languages, ASCII drawings[/code]
  • [math]formula (LaTeX syntax)[/math]
  • [[Title]] – link to an article
  • Link to another post: right-click its post ID (#8078628), copy the address, paste it into the text

More about formatting

Post long source code as an attachment, not in the text.

Your name and e-mail address

Already registered? Log in

Not shown to anyone. We send you a link; your post appears once you confirm it there.

By submitting you create a free account and accept the terms of use.