WM9715L
Production Data
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
digitized.
REGISTER
ADDRESS
BIT
14
LABEL
BOOST
DEFAULT
DESCRIPTION
1Ah
0
20dB Boost
Record
Select
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)
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.
PD Rev 4.0 December 2007
20
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
