STW5098_07 Datasheet, PDF (44/86 Pages) STMicroelectronics – Dual low power asynchronous stereo audio Codec with integrated power amplifiers

STw5098
Control registers
5.7
Digital audio interfaces
CR#
(hex)
Description
D7
D6
D5
D4
D3
CR26
(1Ah)
CR27
(1Bh)
DAC data IF
control
ADC data IF
control
X
ADRTOL
DAFORM(2:0)
ADFORM2:0)
DASPIM
ADSPIM
CR28 DAC&ADC data
(1Ch) IF control
AMCKINV DACKP DASYNCP DAMONO ADCKP
D2
D1
D0
DAWL(2:0)
ADWL(2:0)
AD
SYNCP
ADMONO
ADHIZ
Def.
0000
0000
0000
0000
0000
0000
Table 20. CR26 description
Bits
Name
Value
CR26 Description
Def.
DA audio interface format selection
000 Delayed format (I²S compatible)
001 Left aligned format
6-4 DAFORM(2:0)
010 Right aligned format
000
011 DSP format
100 SPI format
111 PCM format (uses left channel)
3 DASPIM
1 DA interface in SPI mode receives one word for both channels
0 DA interface in SPI mode receives two words
0
(alternated, left channel first)
DA interface word length
000 16 bit
001 18 bit
2-0 DAWL(2:0)
000
010 20 bit
011 24 bit
100 32 bit
Table 21. CR27 description
Bits
Name
Value
CR27 description
Def.
7 ADRTOL
1 AD right channel sent to PCM I/F (must set ENADCR=0 in CR1)
0
0 Normal operation
AD audio interface format selection
000 Delayed format (I²S compatible)
001 Left aligned format
6-4 ADFORM(2:0)
010 Right aligned format
000
011 DSP format
100 SPI format
111 PCM format (sends out left channel)
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