Forum Discussion

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

a problem in using the fifo

Recently, i designed a project, in the project i used fifo ip core. the fifo has wraddr and rdaddr port. As my understanding , if i read the fifo , these two address should decrease, if i write t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Out of power-up? You've got a recovery/removal problem.

http://www.alteraforum.com/forum/showthread.php?t=5026&highlight=recovery+removal

I imagine your write flag is high out of reset? Either delay it, or synchronize your reset to the write clock domain(and have it meet recovery/removal timing, which should occur automatically). I think there are some other posts about the reset of the FIFOs. Anyway, either method should fix your problem.