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Altera_Forum
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16 years ago

Sum of bit vectors

Can someone tell me which is the most efficient way to sum 40 signanls ?Each of them is 8 bit long.Thanks in advance
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hmm. The Stratix II is able to add three numbers per ALM-chain, right? If you build a trinary tree (which I suppose parallel_add will use), you will get a depth of 4 stages. Because of that I suggest you use 1, 2 or 4 pipeline stages (where 4 allows the highest clock frequency).