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Altera_Forum's avatar
Altera_Forum
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15 years ago

HPC Memory Controller Write but can't Read

Maybe somebody can help here with this. I have hooked up a HPC memory controller to my SOPC system, configured it the way it is going to be used and everything. No problem with generating, it synth...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Usual causes for this are

1 - You have a clock that's not connected.

2 - You have a reset that's not connected or is improperly connected (logic high vs. logic low).

3 - The HPC controller is not coming out of reset because it can't initialize the RAM. Are you using a DDR controller?

4 - Are you running through a clock-crossing bridge? Did you verify that you are meeting all timing requirements?

Jake