"Buzz" <graeme.joy@gmail.com> wrote in news:1156126911.458363.112120
@p79g2000cwp.googlegroups.com:

> I'd like to hear from anyone who can comment about the performance hit
> when using this chip which has a multiplexed parallel port vs a part
> like the ADSP 21369 which has a separate address and databus.  I would
> be using it in a guitar amp to do reverb and distortion effects (among
> other things).  I'm sorry for the vagueness of this post, I can't
> accurately guage the power needed to do some of this stuff.
> Because I only using small quanties the variety of available ADSP chips
> is limited.
> So any real world relativity comments would be appreciated
> 
> Thanks
> 
> 

I would opt for the 21369. The 21369 has an SDRAM controller which would 
allow you to use an SDRAM instead of SRAM. 

With the 21364, you would use DMA to transfer blocks into the DSP. This 
negates much of the slow speed issues.

I doubt your application will be constrained by the available MIPS anyway. 

We manufacture boards using 21262, 21364 and 21369. Almost all of the new 
designs are 21369 based. You may want to check them out.



-- 
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com

I'd like to hear from anyone who can comment about the performance hit
when using this chip which has a multiplexed parallel port vs a part
like the ADSP 21369 which has a separate address and databus.  I would
be using it in a guitar amp to do reverb and distortion effects (among
other things).  I'm sorry for the vagueness of this post, I can't
accurately guage the power needed to do some of this stuff.
Because I only using small quanties the variety of available ADSP chips
is limited.
So any real world relativity comments would be appreciated

Thanks