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Altera_Forum
Honored Contributor
15 years agoHPC 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
Honored Contributor
15 years agoJake,
Did a signal tap and local_init_done is asserted. Multiple writes work just fine. ST shows the writes look great, all signals behaving as they should. On the reads though, as I indicated the, all activity stops the bus. Interesting observations though: 1. Correct data does appear on the read bus. 2. Local_read_req is normal operation. 3. Local_readdatavalid never asserts. 4. Local_ready, which my understanding is an invert of a slave waitrequest never deasserts during the first clock cycle of the read but stays asserted. My experience in other simulations is that there is always a single waitstate associated with reads. I am doing simple basic read/write, 32-bit data, no bursting. Thoughts?