Re: Looking for very fast MCU, any advice?

In article <1172067130.360137.157080@[EMAIL PROTECTED]
>, 
teuniz@[EMAIL PROTECTED]
 says...
> >
> >What kind of DAC are you using, interface wise?
> >
> 
> A 4-channel 16-bit ADC,  AD974 from Analog Devices connected via SPI.
> 
> For the moment, I want to let it run at 10K smp/sec. per channel.
> So I have to buffer and transfer 80KB/sec. to the FT245R which has an
> 8-bit wide parallel interface.
> 
> I put optocouplers in the SPI-bus because isolation is needed. Because
> of these opto's the max clockspeed on the SPI-bus is 2.5MHz.
> 
OK, you can get that kind of throughput with SPI.  I was just curious.
Can you get that kind of continuous throughput over a FT245R?  I haven't 
played with any of those USB bridge parts yet, BUT I am looking at doing 
a USB project soon and I think one of the off the shelf USB to 
serial/parallel IC's might just be the ticket.

                         Jim