White's TDI jumper

[bklein]

Actually it can be really cheap. Google Wondom. They have a 1701 board, an audio interface board, and a usb interface board. Each like $30 or less.

[bklein]

Some more on the ADAU1701. Carl, have you any experience with Sigma DSP? The part has to be programmed with it - there is no way to program the part using a more traditional basic level. So I am curious what features of the SigmaDSP software you would use and how. Could you draw out a crude block diagram? I am a bit confused with these chips and how they
may be interfaced with external things. Say you want to interface with a FPGA. The block diagrams do not indicate whether the DSP is glued to the ADC digital output, or the DAC input. You have the option of disabling it for straight through audio but I am seeing these chips are audio in, DSP engine, and audio out. Trying to access digital data from the ADC or DSP may be tricky or limiting. I am waiting for a response back from AD on this, they didn’t know right off. Another part, ADAU1772, looked promising for our work application until we saw that it only supported 96/192KHz sample rates. It has better defined serial interface support. Is purposed though for Bose headphone type noise cancellation use. All of this is way above my comfort level but SigmaDSP seems like it would be fun to learn although I don’t have the math background to succeed.

[Carl-NC]

Sorry, I know nothing about SigmaDSP.