I am using a MC9S12XDP512 on a target board with a 20 MHz oscillator being used as an input on the EXTAL pin. I am then assuming that I have a Bus Clock of 10 MHz (because of the divide by 2 mechanism in the System Clocks Generator figure of the S12X manual).
I do not think I am getting a 10 MHz clock for my Bus Clock because I tried using the MSCAN module and to synchronize it with an external tester, I had to configure the MSCAN as though it had a 1.5 MHz input clock which did not make sense.
I am doing no configuration on the PLL or the CRG. My question is, what should the bus clock frequency be in my example and what, if any, configuration of registers do I need to do on the CRG.