Lpc2000

--- In lpc2000@yahoogroups.com, Peter Jakacki <peterjak@t...> wrote:
> Has anyone ever received a conclusive reply from Philips concerning 
the 
> reason for the slow GPIO? I just would like to know why this port is 
so 
> slow, I am curious.

Peter

This is not conclusive stuff from Philips, but the main reason I can 
see for the problem is that the GPIO is a peripheral hanging off the 
relatively slow peripherla bus. The major time seems to be taken up by 
the sychronisation between the core and this bus.

If the bus had been designed more like an external memory bus then 
we'd probably see full-speed (or at least much faster) GPIOs.

-- CHarles