diyAudio - Entries for December 18, 2013
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PIC32MX450F256 as DDS core driving CS4398 DAC

Posted 18th December 2013 at 09:35 AM by googlyone
Updated 18th December 2013 at 09:38 AM by googlyone

Over the last couple of months I have been playing with a PIC32MX450F256H as the DDS core, and using one of the many DAC boards I built for my DSP based crossover as the D/A element.

It has taken a while to get up and running - mainly due to me actually having commitments other than a hobby... (Bugger)

That said, getting this thing up and running also required me to get my head around the microchip XC32 compiler, and the configuration bits in the PIC32MX.

On the compiler, the most serious issue is the schemozzle they call documentation. I imagine if all you wanted to do was simple I/O and stuff you might be OK. As soon as you want to dig into the more detailed registers, the high level library documentation is borderline useless, and spread over a number of directories and the Microchip website. Very frustrating.

The other challenges I had were:
- To set up the PIC I2S interface such that there was no jitter on the LRCLK...
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