Datasheet

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MONO Name Description

0x1 MONO Left channel data is duplicated to right channel

Bits 23,22,21,20,18,19,18,17,16 – SLOTDISx Slot x Disabled for this Serializer [x=7..0]

This field allows disabling some slots in each transmit frame:

Value Description

Slot x is used for data transfer.

Slot x is not used for data transfer and will be output as specified in the TXDEFAULT field.

Bit 15 – BITREV Data Formatting Bit Reverse

This bit allows changing the order of data bits in the word in the Formatting Unit.

BITREV Name Description

0x0 MSBIT Transfer Data Most Significant Bit (MSB) first (default for I2S protocol)

0x1 LSBIT Transfer Data Least Significant Bit (LSB) first

Bits 14:13 – EXTEND[1:0] Data Formatting Bit Extension

This field defines the bit value used to extend data samples in the Formatting Unit.

EXTEND[1:0] Name Description

0x0 ZERO Extend with zeros

0x1 ONE Extend with ones

0x2 MSBIT Extend with Most Significant Bit

0x3 LSBIT Extend with Least Significant Bit

Bit 12 – WORDADJ Data Word Formatting Adjust

This field defines left or right adjustment of data samples in the word in the Formatting Unit. for details.

WORDADJ Name Description

0x0 RIGHT Data is right adjusted in word

0x1 LEFT Data is left adjusted in word

Bits 10:8 – DATASIZE[2:0] Data Word Size

This field defines the number of bits in each data sample. For 8-bit compact stereo, two 8-bit data

samples are packed in bits 15 to 0 of the DATAm register. For 16-bit compact stereo, two 16-bit data

samples are packed in bits 31 to 0 of the DATAm register.

DATASIZE[2:0] Name Description

0x0 32 32 bits

0x1 24 24 bits

0x2 20 20 bits

SAM D21 Family

I2S - Inter-IC Sound Controller

Datasheet Complete

DS40001882D-page 657