What is the clock rate for Timer0/1 on the C672x CPU Cycle Accurate Simulator?

CT45036

I am using Timer0 for benchmarking and expected this timer to be running at 100Mhz. Using the profiler and analyzing CPU cycles it looks like it is running at 75Mhz. I could not find info for the rate in any documents, but looking at the configuration file "tisim_672x_cpu_simulator.cfg" it has a line "CLOCK_FREQ 100;".

I am using CCS4.

over 15 years ago

0 Sheshadri Chakravarthy over 15 years ago

TI__Intellectual 1420 points

Hi,

The timer clock divide ratio is 1:4 with respect to CPU clock. Hence you should see timer running at 25MHz taking CPU clock as 100 MHz. This means for every 4 CPU clocks the simulator would 1 clock to timer.

regards,

Sheshadri

0 CT45036 over 15 years ago in reply to Sheshadri Chakravarthy

Intellectual 540 points

Thanks Sheshadri, this makes sense now, the CPU is running at 300Mhz so the timer is running at 75Mhz. Where is this timer clock divide ratio (1:4) documented?

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What is the clock rate for Timer0/1 on the C672x CPU Cycle Accurate Simulator?