I2SCFGR

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Interpret as I2SCFGR

I2S configuration register

CHLEN	Channel length (number of bits per audio channel)
DATLEN	Data length to be transferred
CKPOL	Steady state clock polarity
I2SSTD	I2S standard selection
PCMSYNC	PCM frame synchronization
I2SCFG	I2S configuration mode
I2SE	I2S Enable
I2SMOD	I2S mode selection
ASTRTEN	Asynchronous start enable

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