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WM8352 데이터시트(PDF) 92 Page - Wolfson Microelectronics plc

부품명 WM8352
상세설명  Wolfson AudioPlus™ Stereo CODEC with Power Management
PDF  336 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8352 데이터시트(HTML) 92 Page - Wolfson Microelectronics plc

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WM8352
Production Data
w
PD, February 2011, Rev 4.4
92
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
8:9
AIF_FMT [1:0]
10
(I2S)
Data format
00 = Right Justified
01 = Left Justified
10 = I2S
11 = DSP / PCM mode
Note - see Section 13.11 for the
selection of 8-bit mode.
R114 (72h)
Audio
Interface
ADC
Control
7
AIFADC_PD
0
Enables a pull down on ADC data pin
0 = disabled
1 = enabled
6
AIFADCL_SRC
0
Selects Left channel ADC output.
0 = ADC Left channel
1 = ADC Right channel
5
AIFADCR_SRC
1
Selects Right channel ADC output.
0 = ADC Left channel
1 = ADC Right channel
4
AIFADC_TDM_
CHAN
0
ADCDAT TDM Channel Select
0 = ADCDAT outputs data on slot 0
1 = ADCDAT outputs data on slot 1
3
AIFADC_TDM
0
ADC TDM Enable
0 = Normal ADCDAT operation
1 = TDM enabled on ADCDAT
R115 (73h)
Audio
Interface
DAC
Control
7
AIFDAC_PD
0
Enables a pull down on DAC data pin
0 = disabled
1 = enabled
6
DACL_SRC
0
Selects Left channel DAC input.
0 = DAC Left channel
1 = DAC Right channel
5
DACR_SRC
1
Selects Right channel DAC input.
0 = DAC Left channel
1 = DAC Right channel
4
AIFDAC_TDM_
CHAN
0
DACDAT TDM Channel Select
0 = DACDAT outputs data on slot 0
1 = DACDAT outputs data on slot 1
3
AIFDAC_TDM
0
DAC TDM Enable
0 = Normal DACDAT operation
1 = TDM enabled on DACDAT
Table 46 Selecting the Audio Data Format
In Left Justified mode, the MSB is available on the first rising edge of BCLK following an LRCLK
transition. The other bits up to the LSB are then transmitted in order. Depending on word length,
BCLK frequency and sample rate, there may be unused BCLK cycles before each LRCLK transition.
n
n-1
n-2
3
2
1
n
n-1
n-2
3
2
1
LEFT CHANNEL
RIGHT CHANNEL
MSB
LSB
Input Word Length (WL)
1/fs
LRCLK
BCLK
DACDAT/
ADCDAT
Figure 50 Left Justified Audio Interface (assuming n-bit word length)



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