WM8753L
Advanced Information
REGISTER
ADDRESS
BIT
LABEL
RSEL
DEFAULT
DESCRIPTION
R32 (20h)
Record Mix (1)
7
0
Record Mixer Select Right Mix
0 : Right Mix not selected into Record
mixer
1 : Right mix selected into Record
mixer
RRECVOL
[2:0]
101
(0dB)
Right mixer signal to Record mixer
Volume
6:4
000 = +6dB
… (3dB steps)
111 = -15dB
LSEL
0
Record Mixer Select Left Mix
0 : Left Mix not selected into Record
mixer
3
1 : Left mix selected into Record mixer
LRECVOL[2:0]
101
Left mixer signal to Record mixer
2:0
Volume
(0dB)
000 = +6dB
… (3dB steps)
111 = -15dB
R33 (21h)
Record Mix (2)
MSEL
0
Record Mixer Select Mono Mix
0 : Mono Mix not selected into Record
mixer
3
1 : Mono mix selected into Record
mixer
MRECVOL
[2:0]
101
Mono mixer signal to Record mixer
Volume
2:0
000 = +6dB
… (3dB steps)
111 = -15dB
Table 6 Record Mixer Input Select and Gain 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 (in the front end of the ADC) or in the digital domain (after the ADC).
MONOMIX selects the mode of operation. For analogue mono mix either the left or right channel ADC
can be used, allowing the unused ADC to be powered off or used for a dc measurement conversion.
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.
Note:
If DC measurement is selected this overrides the MONOMIX selection.
REGISTER
ADDRESS
BIT
5:4
LABEL
DEFAULT
DESCRIPTION
R46 (2Eh)
ADC input
Mode
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 7 Mono Mixing
AI Rev 3.1 June 2004
23
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
