STW5095 datasheet(37/73 Pages) STMICROELECTRONICS

37 / 73 page

Control registers

STw5095

36/72

5.7

Digital audio interfaces

CR#

(hex)

Description

D7D6D5D4

D2D1

Def.

CR26 (1Ah)

DAC Data IF Control

DAFORM(2:0)

DASPIM

DAWL(2:0)

0000 0000

CR27 (1Bh)

ADC Data IF Control

ADRTOL

ADFORM2:0)

ADSPIM

ADWL(2:0)

0000 0000

CR28 (1Ch)

DAC&ADC Data IF Control

AMCKINV

DACKP

DASYNCP

DAMONO

ADCKP

ADSYNCP

ADMONO

ADHIZ

0000 0000

Bits

Name

Value

CR26 Description

Def.

6-4

DAFORM(2:0)

000

001

010

011

100

111

DA Audio Interface Format Selection

Delayed Format (I2S Compatible)

Left Aligned Format

Right Aligned Format

DSP Format

SPI Format

PCM Format (uses left channel)

000

DASPIM

DA interface in SPI mode receives one word for both channels

DA interface in SPI mode receives two words (alternated, left

channel first)

2-0

DAWL(2:0)

000

001

010

011

100

DA interface word length

16 bit

18 bit

20 bit

24 bit

32 bit

000

Bits

Name

Value

CR27 Description

Def.

7ADRTOL

AD Right Channel sent to PCM I/F (must set ENADCR=0 in CR1)

Normal Operation

6-4

ADFORM(2:0)

000

001

010

011

100

111

AD Audio Interface Format Selection

Delayed Format (I2S compatible)

Left Aligned Format

Right Aligned Format

DSP Format

SPI Format

PCM Format (sends out left channel)

000

ADSPIM

AD interface in SPI mode sends one channel (left)

AD interface in SPI mode sends two channels (alternated, left first)

2-0

ADWL(2:0)

000

001

010

011

100

AD interface word length

16 bit

18 bit

20 bit

24 bit

32 bit

000

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