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WM8904ECS/R 数据表(PDF) 151 Page - Wolfson Microelectronics plc

部件名 WM8904ECS/R
功能描述  Ultra Low Power CODEC for Portable Audio Applications
PDF  188 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8904ECS/R 数据表(HTML) 151 Page - Wolfson Microelectronics plc

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Pre-Production
WM8904
w
PP, Rev 3.3, September 2012
151
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R37 (25h)
ADC Digital
Volume
Right
8
ADC_VU
0
ADC Volume Update
Writing a 1 to this bit causes left and right ADC volume
to be updated simultaneously
Analogue-to-Digital
Converter (ADC)
7:0
ADCR_VOL
[7:0]
1100_0000 Right ADC Digital Volume
00h = Mute
01h = -71.625dB
02h = -71.250dB
… (0.375dB steps)
C0h = 0dB
… (0.375dB steps)
EFh to FFh = +17.625dB
Analogue-to-Digital
Converter (ADC)
Register 25h ADC Digital Volume Right
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R38 (26h)
ADC Digital
0
6:5
ADC_HPF_CU
T [1:0]
00
ADC Digital High Pass Filter Cut-Off Frequency (fc)
00 = Hi-fi mode (fc=4Hz at fs=48kHz)
01 = Voice mode 1 (fc=127Hz at fs=16kHz)
10 = Voice mode 2 (fc=130Hz at fs=8kHz)
11 = Voice mode 3 (fc=267Hz at fs=8kHz)
(Note: fc scales with sample rate fs.)
Analogue-to-
Digital Converter
(ADC)
4
ADC_HPF
1
ADC Digital High Pass Filter Enable
0 = disabled
1 = enabled
Analogue-to-
Digital Converter
(ADC)
1
ADCL_DATINV
0
Left ADC Invert
0 = Left ADC output not inverted
1 = Left ADC output inverted
Analogue-to-
Digital Converter
(ADC)
0
ADCR_DATIN
V
0
Right ADC Invert
0 = Right ADC output not inverted
1 = Right ADC output inverted
Analogue-to-
Digital Converter
(ADC)
Register 26h ADC Digital 0
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R39 (27h)
Digital
Microphone
0
12
DMIC_ENA
0
Enables Digital Microphone mode
0 = Audio DSP input is from ADC
1 = Audio DSP input is from digital microphone
interface
When DMIC_ENA = 0, the Digital microphone clock
(DMICCLK) is held low.
Digital Microphone
Interface
11
DMIC_SRC
0
Selects Digital Microphone Data Input pin
0 = IN1L/DMICDAT1
1 = IN1R/DMICDAT2
Digital Microphone
Interface
Register 27h Digital Microphone 0



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