UART max speed

Thanks for the reply, I was actually aware of the ability to divide the system clock down for derrivation of the baud rate, but I guess I am leary of whether I could really run Mbps with the uart in terms of processor performance. At 10Mbps, that would mean a byte interrupt every usec or so. Do you know if the processor can handle that? And I know it depends on what all else it is doing, what other interrupts it has to service, but in general?