Hi

Has anybody an idea how to interface the 21368 to a host processor via
the multiprocessor port? It seems that this is not possible with the
368, as it does not have a chip select line. And probably the IOP
registers can not be accessed via the multiprocessor port? I would
like to have a parallel interface to the host, instead of SPI, which
is fairly limited in throughput.

Or - is it possible to have an 21161 and a 21368 on the same bus,
sharing an SDRAM?

Best Regards,
Daniel

At 04:22 PM 12/11/2006, Daniel Weiss wrote:

>Hi
>
>Has anybody an idea how to interface the 21368 to a host processor via
>the multiprocessor port? It seems that this is not possible with the
>368, as it does not have a chip select line. And probably the IOP
>registers can not be accessed via the multiprocessor port? I would
>like to have a parallel interface to the host, instead of SPI, which
>is fairly limited in throughput.
>
>Or - is it possible to have an 21161 and a 21368 on the same bus,
>sharing an SDRAM?
>
>Best Regards,
>Daniel

I don't think this is easy with the 2136x. I think the easiest 
solution might be to implement a host interface using dual port RAM. 
This could be done in a small FPGA or a dedicated device. If you were 
going this route, I would use a 21369 since you won't take advantage 
of the 21368's extra features. I like this approach better than using a 21161.

We are planning a dspblok with that uses a 21369 and FPGA late next quarter.

Al Clark
Danville Signal Processing, Inc.
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