I call upon the mighty piclist once more....

I've just been asked if I can help with a project involving a dual 12 bit
DAC (MAX144) and a dual 12 bit ADC (MAX5156) which are to be part of a
closed loop control system.  The system has to have  very fast response time
and the sampling speed will need to be in the region of 50k samples/sec.
This means I will need a part with a built in SPI interface.  No problem as
we have an emulator for the 16C63 etc.

However, this system is to be controlled via a 68HC12 over an SPI bus.
Hmmm.  Now do any parts have 2 SPI interfaces?  Because I think that's what
I'm going to need unfortunately.  The PIC will (I suspect) be running pretty
well flat out performing it's control functions so a software implementation
is going to be tricky.

Any suggestions?

Regards

Mike Rigby-Jones