Via https://www.youtube.com/watch?v=lNBrGOk0XzE and https://www.youtube.com/watch?v=azLQf4aLv9w
Started with default settings, then added I2S2 interface to connect to the Pmod Stereo interface
Mode & Configuration:
- Full Duplex master
- with Master Clock output
Parameter Settings
- Master Mode Transport
- I2S Philips
- 24 bits data on 32 bits frame (changed)
- 96 kHz (changed)
DMA Settings
- Add both TX & RX
- Circular FIFO
- I set to use Half-Word, not Bytes. He didn't show this and this is important.
I/O | Signal | Pmod Pins
-------+-------------+------------------
PC6 | I2S2_MCK | 7, 1 MCLK
PB12 | I2S2_WS | 8, 2 LRCK
PB10 | I2S2_CK | 9, 3 SCLK
PC2 | I2S2_ext_SD | 10 ADC SDOUT
PC3 | I2S2_SD | 4 DAC SDIN
GND | | 11, 5 GND
3.3V | | 12, 6 VCC