The I2S Stereo Audio DAC board based on Cirrus Logic/Wolfson WM8524 has been tested and functions perfectly. Yay!

I tested it using my XCORE-200 explorerKIT and the lib_i2s 2.3.0 library in "i2s_frame_master" mode. Currently I'm running it using the following parameters:

• Master Clock: 12.288 MHz (generated externally by Si5351)
• Word Clock: 48000 Hz
• mclk_bclk_ratio: 4
• mode: I2S_MODE_I2S

Right now I'm just generating some nice sine waves at different frequencies, but the output looks (and sounds) very clean. Stereo separation is tested good as well.