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WM9711 Datasheet(PDF) 19 Page - Wolfson Microelectronics plc

Part # WM9711
Description  LOW POWER AUDIO CODEC FOR PORTABLE APPLICATIONS
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9711 Datasheet(HTML) 19 Page - Wolfson Microelectronics plc

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Production Data
WM9711L
w
PD Rev 4.1 April 2004
19
RECORD SELECTOR
The record selector determines which input signals are routed into the audio ADC. The left and right
channels can be selected independently. This is useful for recording a phone call: one channel can
be used for the RX signal and the other for the TX signal, so that both sides of the conversation are
digitised.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
14
BOOST
0
20dB Boost
1: Boost ADC input signal by 20dB
0 :No boost
13:12
R2P
11
Record to phone path enable
00: Left ADC and Right ADC to phone
mixer
01 : Left ADC to phone mixer
10: Right ADC to phone imixer
11 : Muted
11
R2PBOOST
0
20dB Boost for ADC to phone signal
1: Boost signal by 20dB
0 :No boost
10:8
RECSL
000
Left ADC signal source
000: MIC* (pre-PGA)
001-010: Reserved (do not use this setting)
011: Speaker mix
100: LINEINL (pre-PGA)
101: Headphone Mix (left)
110: Phone Mix
111: PHONE (pre-PGA)
1Ah
Record
Select
2:0
RECSR
000
Right ADC signal source
000: MIC* (pre-PGA)
001-010: Reserved (do not use this setting)
011: Speaker mix
100: LINEINR (pre-PGA)
101: Headphone Mix (right)
110: Phone Mix
111: PHONE (pre-PGA)
Table 7 Audio Record Selector
Note:
*In stereo mic mode, MIC1 is routed to the left ADC and MIC2 to the right ADC. In all mono
mic modes, the same signal (MIC1, MIC2 or MIC1-MIC2) is routed to both the left and right
ADCs. See “Microphone Input” section for details.


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