With regard to the ADC sync signal, the normal usage is to synchronize the ADC capture with the PWM reload event.  That event can be used as an input to a timer which can then fire the ADC sync signal delayed from the PWM event.  Of course the timer can be synched to a different input, or the delay can be virtually eliminated by using a small count.

Jerry.

> -----Original Message-----
> From: TA1T [mailto:c...@hotmail.com]
> Sent: Friday, November 07, 2003 6:08 AM
> To: m...@yahoogroups.com
> Subject: [motoroladsp] Explain timers use in ADC and SPI
>
>
>
> Hello,
>
> The Quad timer is required for the ADC module and the SPI module for
> generating sync pulses.
>
>
> However, could somebody please explain what the sync pulses do with
> regards to the ADC and the SPI modules. (Or how the quad timer is
> used in these applications) 
>
> Thanks
>
>
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