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Altera_Forum
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17 years ago

Functional Simulation is Correct,But Timing is Incorrect

Hi,I wrote an LDPC Encoder, It's Functional Simulation is Correct, But When I use Timing Simulation , The data read from ROM is Incorrect , I can't find where the problem is , Please help me , Thank ...
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Altera_Forum
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17 years ago

srf6791 (http://www.alteraforum.com/forum/member.php?u=11003):

Thanks for your answer. I checked my design with your guideline 1 , and I found a problem: the posedge of clk near the change edge of the address of the ROM , so I add an inverter between the clk to the ROM ， OK ， the data became correct.

Thank you again~