Hi,
our custom board has a C5502-300 supplied with a 20 MHz clock on X2/CLKIN, and I'm attempting to spin it up to 300 MHz using the PLL with a multiplier of 15. I can successfully and reliably use a 10x multiplier to achieve 200MHz, but increasing the multiplier above ths level gives poor results. For mul=11, the PLL locks but results in an unstable environment where the emulator will stop the code once and then report error 0x00000020/-1141 - Execution and request a reset. For mul=15 the PLL fails to lock. Other values 12-14 can do either of these.
I've tried disabling CLKOUT but this makes no difference.
I'm using CCS V4.2.1 and emulator SD XDS510 USB. I'm using the CSL function PLL_setFreq() to configure the clocks.
Can anybody suggest what the problem may be?
Chris
