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Altera_Forum
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14 years ago

SSN and reserve pins as ground

Hi everyone, I started doing SSN analysis on my preliminary designs and I found that I had problems with my standard PCI signals (3.0V) creating SSN on other 3.0V I/Os and vice versa. I tr...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

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I mean SSN errors. i.e. more than 80 or 90% of noise on the reserved ground pins (I set them using pin planner)

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Reserving pins as ground in the pin planner does nothing but tell the pin planner you have connected those pins to ground. If you haven't actually done that on the PCB, then you will not gain any advantage.

Cheers,

Dave