[sdiy] New cheap FPGA development system

[James Patchell]

Getting the data out is easy....just connect up a Crystal Semiconductor 
Delta-Sigma D-A converter...they even have a 24 bit, 8 channel device...and 
then just a wee bit of verilog or vhdl, and there you go...

:-)

At 02:43 PM 5/25/2006 -0700, Eric Brombaugh wrote:
>Harry Bissell Jr wrote:
>>I'm wondering if you can add a fast enough
>>DAC easily to get good quality audio out of it.
>>Sure, the FPGA internally is fast enough but can the
>>I/O keep up ???
>>
>
>Good point - it doesn't matter how many gigasamples you compute in the 
>FPGA fabric, if you can't get them out of that little box then they do you 
>no good.
>
>Apparently, the board was designed by Digilent, and they provide 
>additional I/O expansion boards. Here's their analog I/O board:
>
>http://www.digilentinc.com/Products/Detail.cfm?Prod=AIO1&Nav1=Products&Nav2=Accessory
>
>That doesn't look too promising: in addition to only providing 8-bit 
>converters, it has a proto-board on it :P
>
>The good news is that the FPGA I/O pins are capable of running very fast, 
>and there are a lot of them brought out to general-purpose connectors. 
>There's no reason you couldn't lash up a decent audio quality DAC on your 
>own daughter card. Not as convenient as having it built-in from scratch though.
>
>Eric

         -Jim
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Come to the 2006 Pacific Southwest Synth DIY meet
June 10, 2006 at the Goleta Library....

Details:
http://www.oldcrows.net/~patchell/synthdiymeet.html
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