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WM8991 Datasheet(PDF) 104 Page - Wolfson Microelectronics plc

Part # WM8991
Description  Mobile Multimedia CODEC with Dual-Mode Class AB/D Speaker Driver
PDF  174 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8991 Datasheet(HTML) 104 Page - Wolfson Microelectronics plc

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WM8991
Pre-Production
w
PP, May 2008, Rev 3.1
104
Audio
Interface
BCLK
ADCLRC
ADCDAT
DACLRC
DACDAT
BCLK2
DACLRC2
DACDAT2
ADC_BCLK
ADC_LRCLK
ADC_DATA
DAC_BCLK
DAC_LRCLK
DAC_DATA
0
1
ALRCGPIO1
AIF_SEL
0
1
0
1
0
1
Figure 61 Audio Interface Input Flow
The Audio Interface input flow illustrated above is controlled by only two signals. These are
ALRCGPIO1 and AIF_SEL.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R8 (08h)
13
AIF_SEL
0b
Audio Interface Select
0 = Audio interface 1
1 = Audio interface 2 (GPIO3/BCLK2,
GPIO4/DACLRC2, GPIO5/DACDAT2)
R9 (09h)
15
ALRCGPIO1
0b
ADCLRC/GPIO1 Pin Function Select
0 = ADCLRC pin
1 = GPIO1 pin (ADCLRC connected to
DACLRC internally)
Table 57 Audio Interface Pin Function Select



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