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Altera_Forum
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16 years ago

frequency divider

i want ot create frequency divider which devide the frequency by 50 000 000 (so with 50 MHz clock i want ot reach 1 HZ (T=1s)) can i use this code: library ieee; use ieee.std_logic_116...
Altera_Forum's avatar
Altera_Forum
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16 years ago

I did not calculate the constant, I just reused your value.

BTW you can replace "000000000" with "(others => '0')"

And you can write your constant Like this:

constant CLK_PERIOD_NS = 20; -- CLK period in [ns] units

constant DESIRED_PERIOD_NS = 1000000000; -- desired period in [ns] units

constant TIMER_RELOAD = DESIRED_PERIOD_NS/CLK_PERIOD/2-1;

And then just replace

"11101110011010110010100000000" with TIMER_RELOAD