I2S_XFER_RXS_SHIFT
#define I2S_XFER_RXS_STOP (0 << I2S_XFER_RXS_SHIFT)
#define I2S_XFER_RXS_START (1 << I2S_XFER_RXS_SHIFT)
#define I2S_XFER_RXS_STOP (0 << I2S_XFER_RXS_SHIFT)
#define I2S_XFER_RXS_START (1 << I2S_XFER_RXS_SHIFT)