Регистры H616: I2Sn Format 1

31 |•|•|•|•|•|•|•|•|•|•|•|•|•|•|•|•| 16
15 |•|•|•|•|•|•|•|•|•|•|•|•|•|•|•|•| 00

Unused

Bits 31 : 8

RX_MLS

Bit 7
R/W
0x0

MSB/LSB First Select
0: MSB First
1: LSB First

TX_MLS

Bit 6
R/W
0x0

MSB/LSB First Select
0: MSB First
1: LSB First

SEXT

Bits 5 : 4
R/W
0x3

Sign Extend in slot [sample resolution < width]
00: Zeros or audio gain padding at LSB position
01: Sign extension at MSB position
10: Reserved
11: Transfer 0 after each sample in each slot

RX_PDM

Bits 3 : 2
R/W
0x0

PCM Data Mode
00: Linear PCM
01: reserved
10: 8-bit u-law
11: 8-bit A-law

TX_PDM

Bits 1 : 0
R/W
0x0

PCM Data Mode
00: Linear PCM
01: reserved
10: 8-bit u-law
11: 8-bit A-law

Bit fields structure

typedef union i2sn_fmt1 { struct { unsigned tx_pdm : 2; unsigned rx_pdm : 2; unsigned sext : 2; unsigned tx_mls : 1; unsigned rx_mls : 1; unsigned unused0 : 24; } b; unsigned long w; } I2Sn_FMT1