[sdiy] Spartan III proposal...

[James Patchell]

Well, to tell you the truth, I hadn't considered some of those.  I can add 
a 12 bit A/D with a 16:1 mux for things like pots.  For switches and LEDs, 
there are a total of three connectors on the Starter Kit board for 
"expansion".  I cannot imagine using more than two of those....oh wait, I 
am putting a ATMega128 on the board, that has 8 10 bit A/D channels, and it 
will also have extra pins to do things like drive LEDs and sense 
switches...(besides the FPGA)...is that enough user interface?....Like I 
said, I am open to suggestions...

At 07:19 PM 2/24/2005 -0600, John Loffink wrote:
>Jim,
>
>How many inputs would you have dedicated for pot and switch controls and how
>many outputs for LEDs?  I am assuming the UI will be analog-like.
>
>John Loffink
>The Microtonal Synthesis Web Site
>http://www.microtonal-synthesis.com
>The Wavemakers Synthesizer Web Site
>http://www.wavemakers-synth.com
>
>
> > -----Original Message-----
> > From: owner-synth-diy at dropmix.xs4all.nl [mailto:owner-synth-
> > diy at dropmix.xs4all.nl] On Behalf Of James Patchell
> >
> > Group...
> >
> >          I decided to get myself one of these:
> >
> > http://www.xilinx.com/products/spartan3/s3boards.htm
> >
> >          This is the Xilinx Spartan III starter kit.  What I am planning
> > on
> > doing is making a board that interfaces to this that will have 8
> > 24bit/192Ksps ADCs and 8 24bit/192Ksps DACS so that the kit can be used
> > for
> > doing some pretty powerful Digital Audio processing.  Now the big question
> > is, is anybody else interested.  The big bug-a-boo is that the add on
> > board
> > will almost certainly have to use surface mount technology...I am
> > personally not happy about that, but that is pretty much the only way the
> > ADCs and DACs come these days.
> >
> >          I am still trying to decide whether to use Crystal Semiconductor
> > or Analog Devices Delta Sigma parts.  Any suggestions are welcome...Oh
> > yes,
> > I was also thinking of maybe putting a spot on the board for a
> > ATMega128...but I am still debating that.
> >
> >          Any suggestions?  Any Interest??  Remember, the Webpack that
> > Xilinx provides to program the board with is free...
> >
> >
> >          -Jim
> > ***************************************************************
> > http://www.oldcrows.net/~patchell
> >
> > ***************************************************************
> >

         -Jim
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http://www.oldcrows.net/~patchell

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