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BF537: is the maximum VCO frequency dependent on VDDINT?

Question asked by mhamel on Dec 16, 2009
Latest reply on Dec 17, 2009 by BobK

The title more or less sums it up -- the data sheet talks about restrictions on CCLK but implies that its OK to run the VCO at 600MHz with VDDINT set to 0.85V provided that I use CSEL to divide down CCLK to 150MHz. I have been testing this as a way of saving power when idle - I can't use sleep mode as I potentially have DMA running to internal RAM from the MAC. It seems to work but I'm seeing variations in SCLK as I ramp the voltage up or down, which is a bit worrying...



- M.H