I am currently using the MCF5474 but need to change to a processor with a working USB. The MCF5474 also has a speed problem with accessing external memory and while changing processor I would like to see that improved.
Has the access time to SDRAM and external SRAM been improved on the MCF5445x family over that seen on the MCF547x and MCF548x ?
By that I mean does the crossbar switch (XBS) on the MCF5445x work faster than the XL bus on the MCF547x/8x ? If so, are there any figures to compare the relative speeds?