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Forum Post: RE: CIR mode in AM335x

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Hi Chandra,
 
The formula is:
 
Dividing value = (FCLK/16)/Tfreq
 
If T=200us then Tfreq = 1/ 2* 200us = 2500Hz. Then 48 000 000 /16 / 2500 = 1200 or DLL = 0xB0 and DLH = 0x04.
 
As you can see the frequency period is twice the ON pulse.


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