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Altera_Forum
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16 years ago

Clock Divider

I have a input clock 128*Fs(Sampling Frequency). I need derived clocks of Fs, 2Fs, 4Fs, 8Fs, 16Fs ... 64Fs. However, there are 2 ways in my mind to implement it. 1st: 1 module only an...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hi,

1) It doesn't work as expected :

- if (count == 2, 4, 6, 8, ...) a = 1;//64*Fs

- else if (count == 4, 8, 12,...) b =1; //32*Fs // count == 4,8 already done in the above condition.

2)too numerous counters

I give a 3rd solution : one counter (range 5 downto 0 for example) and take each bit that switches on divided frequence :

count(0) for signal f/2,

count(1) for f/4,

count(2) for f/8

....

May it help you !

EDIT :

I see you need F/6 for example : take a counter modulo 6

F/12 take (F/6)/2 : be aware about their "phase".