> I haven't compared them with other available devices, but, you may want
to
> look at the national USBN9603/9604.  They have both parallel and SPI
> interface capability, and they have a few nice things like a clock-out
line
> with internal programmable divider, which can be a plus.
>
> However, as to overhead, the 9603/4 don't even do DATA0/DATA1 toggling
for
> you, though they do put them nicely in registers rather than making you
> sort out the packet ID.
>
> I don't know which would be better for your application but I thought
that
> you might want to know that there were also these out there.  From what
you
> describe, the 9603/4 that I'm using sounds reasonably similar to what
you
> have already found.

Thanks, I had noticed these chips.  They seem to be very capable and
flexible but also very low level in that they require more real time
responses from the microcontroller to get the same job done.


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