[hpsdr] Dumb question - HPSDR sound card

[Lyle Johnson]

> You probably could do something like this (for the target price) with
> the TI TLV320AIC23B CODEC:
> 
> <http://focus.ti.com/docs/prod/folders/print/tlv320aic23b.html>
> 
> and an Altera EPM240 CPLD + Cypress CY7C68013A "FX2" USB microcontroller.

Or an STM STR7 or STR9.  These are Flash-based ARM CPus with USB (and 
Ethernet :-) support.  STM provides free software libraries and demos 
using this as a USB audio streaming device for input and output.  Use a 
CPLD like a Xilinx XCR3032 or similar (even cheaper than the Altera 
EPM240 since cost seems to be a driver here) and you're on your way...

Sounds like a fun project, Terry!

73,

Lyle KK7P



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