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Altera_Forum's avatar
Altera_Forum
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8 years ago

interfacing to epcq256 through fpga

Hello, I've posted this before but I'm trying to interfacing to the epcq256 via the fpga in order to store a counter on the epcq. I'm using the ASMI parallel core in order to transfer data to a...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

This doesn't sound right - I agree. Busy shouldn't assert unless you've issued a command to it.

Can you check the polarity of all your control signals? Confirm you're not permanently issuing a command to it - e.g. 'rden' is active HIGH (as are all the available control signals). Tie all these off low.

What device family are you using? Have you tried simulating it? What parameter settings are you using when you configure the IP? Try simplifying the IP by turning optional features off.

Cheers,

Alex