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WM8971LEFL/R 数据表(PDF) 18 Page - Wolfson Microelectronics plc

部件名 WM8971LEFL/R
功能描述  STEREO CODEC FOR PORTABLE AUDIO APPLLICATIONS
PDF  56 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8971LEFL/R 数据表(HTML) 18 Page - Wolfson Microelectronics plc

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WM8971L
Advanced Information
w
AI Rev 3.0 March 2004
18
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
7:6
LINSEL
00
Left Channel Input Select
00 = LINPUT1
11 = Differential
R32 (20h)
ADC Signal
Path Control
(Left)
5:4
LMICBOOST
00
Left Channel Microphone Gain Boost
00 = Boost off (bypassed)
01 = 13dB boost
10 = 20dB boost
11 = 29dB boost
7:6
RINSEL
00
Right Channel Input Select
00 = RINPUT1
01 = MIC
11 = Differential
R33 (21h)
ADC Signal
Path Control
(Right)
5:4
RMICBOOST
00
Right Channel Microphone Gain Boost
00 = Boost off (bypassed)
01 = 13dB boost
10 = 20dB boost
11 = 29dB boost
Table 2 Input Software Control
MONO MIXING
The stereo ADC can operate as a stereo or mono device, or the two channels can be mixed to mono,
either in the analogue domain (i.e. before the ADC) or in the digital domain (after the ADC).
MONOMIX selects the mode of operation. The user also has the flexibility to select the data output
from the audio interface using DATSEL. The default is for left and right channel ADC data to be
output, but the interface may also be configured so that e.g. left channel ADC data is output as both
left and right data for when an analogue mono mix is selected.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R31 (1Fh)
ADC input
Mode
7:6
MONOMIX
[1:0]
00
00: Stereo
01: Analogue Mono Mix (using left ADC)
10: Analogue Mono Mix (using right ADC)
11: Digital Mono Mix
Table 3 Mono Mixing
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R23 (17h)
Additional
Control (1)
3:2
DATSEL
[1:0]
00
00: left data=left ADC; right data =right ADC
01: left data =left ADC; right data = left ADC
10: left data = right ADC; right data =right ADC
11: left data = right ADC; right data = left ADC
Table 4 ADC Data Output Configuration



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