wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 126

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

WM8400
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DIGITAL AUDIO INTERFACE CONTROL
The register bits controlling audio data format, word length, left/right channel data source and TDM
are summarised in Table 71.
Table 71 Audio Data Format Control
REGISTER
ADDRESS
R5 (05h)
R6 (06h)
15
14
13
12
8
7
6:5
4:3
15
14
13
12
BIT
AIFADCL_SRC
AIFADCR_SRC
AIFADC_TDM
AIFADC_TDM_
CHAN
AIF_BCLK_INV
AIF_LRCLK_INV
AIF_WL
[1:0]
AIF_FMT
[1:0]
DACL_SRC
DACR_SRC
AIFDAC_TDM
AIFDAC_TDM_
CHAN
LABEL
0b
1b
0b
0b
0b
0b
10b
10b
0b
1b
0b
0b
DEFAULT
Left ADC Data Source Select
0 = Left ADC data is output on left channel
1 = Right ADC data is output on left channel
Right ADC Data Source Select
0 = Left ADC data is output on right channel
1 = Right ADC data is output on right
channel
ADC TDM Enable
0 = Normal ADCDAT operation
1 = TDM enabled on ADCDAT
ADCDAT TDM Channel Select
0 = ADCDAT outputs data on slot 0
1 = ADCDAT output data on slot 1
BCLK Invert
0 = BCLK not inverted
1 = BCLK inverted
Right, left and I
0 = normal LRCLK polarity
1 = invert LRCLK polarity
DSP Mode – mode A/B select
0 = MSB is available on 2nd BCLK rising
edge after LRC rising edge (mode A)
1 = MSB is available on 1st BCLK rising
edge after LRC rising edge (mode B)
Digital Audio Interface Word Length
00 = 16 bits
01 = 20 bits
10 = 24 bits
11 = 32 bits
Note - see “Companding” for the selection of
8-bit mode
Digital Audio Interface Format
00 = Right justified
01 = Left justified
10 = I
11 = DSP Mode
Left DAC Data Source Select
0 = Left DAC outputs left channel data
1 = Left DAC outputs right channel data
Right DAC Data Source Select
0 = Right DAC outputs left channel data
1 = Right DAC outputs right channel data
DAC TDM Enable
0 = Normal DACDAT operation
1 = TDM enabled on DACDAT
DACDAT TDM Channel Select
0 = DACDAT data input on slot 0
1 = DACDAT data input on slot 1
2
S Format
2
DESCRIPTION
S modes – LRCLK polarity
PP, April 2009, Rev 3.0
Pre-Production
126