50.5.12.3 Audio Data Alignment

Audio data is transmitted through and received by SPIxSR. Regardless of the selected alignment on the serial interface.

In 16-bit operation, data is transmitted from bit15
In 20-bit operation (24bits-lower bits padded 0), data is transmitted from bit 23
In 24-bit operation, data is transmitted from bit 23
In 32-bit operation, data is transmitted from bit 31

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