Hi @ all!
I'm porting a project from a MSPF2013 to a MSP430F47167 and need MCLK = 8 MHz (or anything above) and SMCLK = 1MHz. With the MSPF2013 this works without external components (crystal), just by the integrated DCO and dividers.
But I haven't found a solution for doing this with the MSP430F47167 without an external crystal.
Any ideas highly welcome!
So I tried it with an additional 16 MHz resonator (value was just laying around) connected to XT2. The idea is to drive MCLK from XT2CLK. And drive SMCLK from FDCO, configured to 1 MHz.
But I can't use XT2CLK as source of MCLK, because I have no crystal on XT1, so it is not working. This causes the LFOF to remain set, which switches MCLK to the DCO, no matter what I set into SELMx.
I tried to disable XT1 ( __bis_SR_register(OSCOFF); ), but then the uC stops working completely.
What I'm doing wrong?
Thanks in advance!