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Altera_Forum
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17 years ago

Altera MAX 3064 CPLD weird problem

Hi, I'm using Altera MAX3000 series (EPM3064-10 to be exact) with CPLD_CLK = 77.5Mhz, and I have a very weird problem... pseudocode is below: signal_abc = asynchronous from external c...
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Altera_Forum
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17 years ago

I don't expect max devices to go wrong on a basic drive.

Are you sure you start up with these flips on zero. I assume you do reset them to zero but there is an option of power-up don't care and it defaults to ON. quartus is then free to choose low or high logic for power up. You must change this default to No