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RE: [10GBASE-CX4] SIGNAL_DETECT




My $0.02:

I do not see how SIGNAL_DETECT can be specified in terms of a receiver
sensitivity threshold when, based on data presented, the receive eye will
likely be completely closed.

Even if not completely closed, there is a high likelihood that the receiver
min threshold will be so low that, even after EQ, you will not be able to
accurately apply a level test to determine whether there is adequate signal
to make a decision.  

I believe the right approach lies in using the state machines provided in
Clause 48 to declare a Local Fault condition.

Shawn

____________________________________________
Shawn Rogers,   PMP               s-rogers@ti.com
High Speed Serial Link Marketing
Texas Instruments
12500 TI Boulevard / M/S 8732/ Dallas, Texas 75243
Office: 214.480.2678                        Cell: 214.549.4868
______________________________________
 

-----Original Message-----
From: Petre Popescu [mailto:popescu@mail.quaketech.com] 
Sent: Monday, January 27, 2003 12:16 PM
To: 10GBCX4
Subject: [10GBASE-CX4] SIGNAL_DETECT

Howard,
Please find attached the text proposed for SIGNAL_DETECT.
I found the most appropriate text for our applications in clause
39 (1000BASE-CX).
Regards, Petre

--
Petre Popescu
Quake Technologies
613.270.8113.x2229
613.220.8982 (cell)