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Visitor chrisab508
Visitor
5,373 Views
Registered: ‎11-11-2015

MPMC NPI Issues

Hello Everyone,

I'm having an issue where when I try to write to DDR via an NPI interface (hooked up through the MPMC controller in EDK), I get behavior that doesn't appear correct based on the timing diagrams in the MPMC documentation.  Below is a snapshot of what I'm seeing, but it appears as though I make address requests (NPI_AddrReq_pin) pretty often, but the module does not acknowledge them (NPI_AddrAck_pin) very often.  Does anyone know about common or potential causes for this?  My only thought is that I'm trying to write to the NPI interface too quickly.

 

Thank you in advance,

Capture.PNG

 

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