configuration register
CHLEN | Channel length (number of bits per audio channel) |
DATLEN | Data length to be transferred |
CKPOL | Inactive state clock polarity |
I2SSTD | standard selection |
PCMSYNC | PCM frame synchronization |
I2SCFG | I2S configuration mode |
SE2 | I2S enable |
I2SMOD | I2S mode selection |