[sdiy] Divide by 10^6?

[Ingo Debus]

Am 28.08.2009 um 21:41 schrieb flightofharmony:

>
>> But if I wanted a flashing LED to indicate a delay time, I'd want it
>> to flash exactly at the intervals according to the delay time. This
>> way you could adjust the delay time on the fly to match the groove.
>>
>> Ingo
>
> What do you mean by "exactly at the intervals"?

I just meant, if the delay time is, say, 0.5 seconds, I'd want the  
LED to light up once every half second. You'd achieve this by  
choosing a divisor equal to the product of delay time and clock  
frequency, or, in other words, how many clocks it takes to move the  
signal through the delay line. According to the table at the end of  
the PT2399 data sheet this must be something around 684000.

Ingo