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ARM9 Frequency scaling

Hello,
I am currently working on a ARM9 based System on Chip. I would like to experiment with Frequency scaling on the CPU, but I have the following issue:
The main PLL is used at the same time by an hardware codec, and the ARM ... So I was wondering if there is any internal PLL on the ARM9 which would allow me to perform DVFS without touching this main PLL ?
At first sight, the reference manual doesn't mention any, but maybe I misread it ...

Regards,

Nicolas DEROUINEAU

Top replies

Jens Bauer over 11 years ago +1 verified

Although I can probably not answer your question (because I am not very experienced with ARM9), I think others may be able to answer it, if you can be more specific on the manufacturer and part number...