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Prescaler for GP Timer on CM403

I'm a newbie to these processors.

If I want to use one of the GP timers as a simple (atomic read) system time of 32bis, 1us per step, how can I do the prescaling of the clock?

As far as I understand there is no dedicated divide-by-n (n=1,2,3....) prescaler  for each timer. So I have to use one GP timer to do divide the

clock (say 100MHz) an output driven by it into the next GP timer as clock input. Is this correct? An do I have to use physical PCB

traces to create this connection or is there a magic trick to do the wiring through some internal switch matrix?

Thanks in advance!

Marc