the MCF52259 docs contain no data about the speed for accesses to internal peripherals (IPS). Since the MCF5213 was extremly slow in this respect: Does anybody know whether the MCF52259 is faster?
IOW how fast can the MCF52259 toggle a port pin (by software control)? The MCF5213 needed 12 cycles for consecutive accesses to "off platform peripherals" like port registers, so the loop couldn't be executed in less than 24 cycles, resulting in 3,3MHz at 80MHz bus speed.
If there is still a difference: Is there a list of "platform peripherals" and "off platform peripherals" in the 5225x?