Forum Discussion

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

Quick Question - How to event on multiple clocks rising edges?

Very quick question... If I have two clocks of different speeds, and want something to happen when the rising edge of both clocks occur at the same time.... how do I do this? I have trie...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I overlooked the fact that both clocks come from the same PLL. In that case one can set "CLOCKS_ARE_SYNCHRONIZED" to "TRUE" saving a bit on logic resources and decreasing latencies. The 'rdempty' signal going (or staying) inactive tells when to start (or continue) the state machine to 'unpack' the 24 bits into 8 bit packets.