Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Avalon-MM Master reading

Hello, I am trying to run Avalon-MM master to read data from memory chip, so I've written a code accessible here: http://paste.org/41475 When I try to count data when readdatavalid is asserte...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Yes, it seams like a work around.

While waitrequest is asserted, read signal should not change. Couldn't get if you respect that.

read request and readdatavalid are quiet independent unless you make assumptions about the pipelining of the slave and its response.

If what you intend to do is working, then it's fine.If you want more variants, I used to lock the arbitration in SOPC till the master got what it needs. But I wouldn't advise it as the burst is much safer as arbitration...