[SI-LIST] Re: How to embedded and to deembedded the clock to serial signal, such as GE and PCI-E
- From: "zheng qi" <qzheng.hb@xxxxxxxxx>
- To: l30136 <zhenhong.sz@xxxxxxxxxx>
- Date: Wed, 5 Apr 2006 18:21:51 +0800
How can you reason out determinately that crosstalk was causing=20
Bit Error . By quieting the aggressive line and then error=20
eliminated .Verifying it ?
I guess that you were checking bit error on machines such as
Smartbit or similarities. so the bit error was the last effect of
many causes and their combination. which including almost all SI/PI
issues . software and hardware design bugs etc . all of these were
need to affirmed one by one .
In one case I had encountered was improper analog power filter
device resulting Gbit singal link error on Verified :)
************************************
qzheng@xxxxxxxxxxxxxxxx
<qzheng.hb@xxxxxxxxx >
2006-4-5
************************************
>2006/4/5, l30136 <zhenhong.sz@xxxxxxxxxx>:
> In one of our cases,zhangkun and me find GE is so sensitive to >crosstalk=
.
> we use oscilloscope find the eye is perfect, when we disable the >GE,we c=
an find GE has only 70mv crosstalk from others signal.
> Even we add 70mv crosstalk to the eye , the perfect eye still will not
> touch the GE eye pattern(the pattern state by IC manufacturer).
> Why little crosstalk will result in bit error?
>
> Best Regards
> li zhen hong
>
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