[sdiy] dsPIC fun board

[Csaba Zvekan]

Hi Tim,

We know all that . Eric who made these boards made it very flexible so  
USART can be used for various reasons RS232,USB,MIDI,GPIO etc. He left  
it to us to create what ever was needed.
The same goes to the DCI that way it's up to you what Audio DAC or  
CODEC you use. I am currently designing to use up some of my CS4224  
AudioCODECs .They are a bit older should not be used in newer  
designs . But still I got them so I might as well use them. :)
But I also want to experiment with a BurrBrown PCM1753 or a CS4341  
AudioDAC ... so I just swap the DCI daughter board :).
That's what I mean with flexibility . As far as MIDI goes  somebody  
has these OPTOCOUPLERs laying around and other have different ones  
that they want to use up.
As Eric mentioned earlier a memory board with it's own memory  
controller µCU and communication via SPI should be plenty fast and  
easy to make. At least for our Audio applications.
So it's this board and a few daughterboards :) that's the idea here.

Csaba

On Jan 17, 2009, at 6:08 PM, Tim Ressel wrote:

> Hey all
>
> I believe there is a certain set of features a DSP board needs to  
> have. Here are things I think are mandatory:
>
> Codec (at least 2x2 channels)
> -- How else to get audio in/out?
>
> Midi
> -- This ubiquitous standard cannot be ignored
>
> Swimming in RAM
> -- for time delay and table-driven effects
>
> CV I/O
> -- again, a modular standard
>
> USB
> -- for fast comms to a PC
>
> Now there are implementation details not covered. For example I  
> would have an AVR coprocessor handle Midi, USB, and possibly CVs. In  
> other words, off load all non-dsp stuff onto a processor better  
> suited for those kinds of tasks.
>
> I think a board like that would be pretty universal. Now I know some  
> are a bit intimidated by the thought of coding a DSP, and adding a  
> coprocessor just ups the ante. Perhaps a clever implementation could  
> have the AVR as an option and run without it if needed.
>
> Man, this is exciting!
>
> --TimR
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