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DS50PCI402 Link-up issue

Other Parts Discussed in Thread: DS50PCI402

Hello,

Our  customer have a link-up issue.
The customer use the DS50PCI402 at between ASIC and device.
The start up sequence as follows.

power on
/PRSNT Low to High
/PRENT High to Low
reset the ASIC and link test start

When /PRSNT is High, link off. I think this is reasonable.
After that, /PRSNT High to Low. Some lane is still link off.
The number of the lane that link off is random.
It is occured when the Auto Rx Detect function ON or OFF.

But it is no probrem when the /PRSNT pin is low all the time.

Do you have any idea?

Best Regards,

Naoki Aoyama