[SI-LIST] Re: PCI Express CLB compliance waveform

Not sure what your generating compliance test waveform means. PCI-E eye
diagram compliance test can be done when PCI-E device is in working, and no
special compliance test waveform needed.
PCI-E device has negotiation process during hardware connection, if
connection can not be setup, the negotiation process will continue, so the
negotiation waveform will interrupt for a while every several seconds. it
may lead to fail to generate eye-diagram.
But If your PCI-E device can work in your system, it means hardware
connection is successful, you can do compliance test. If you still can not
got a valid eye-diagram, please check your scope set up, such as, if
Recovery Clock for Data selected, and appropriate PLL algorithm setup, etc.
Peter zhu
Emerson Network Power



On Sat, Jan 31, 2009 at 3:58 AM, Joel Brown <joel@xxxxxxxxxx> wrote:

> I have a PCI Express CLB plugged into the PEG slot on my system.
> My understanding is that when this board is installed it is supposed to
> invoke the system to generate a compliance test waveform.
>
> I am not sure what this waveform is supposed to look like but I don't think
> what I am getting is the right one because I am not getting a valid eye
> diagram on the scope.
>
> The system has Intel 965 chipset. Is there anything special I have to do to
> invoke the system to generate the proper waveform?
>
>
>
> Thanks - Joel
>
>
>
>
>
>
>
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