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AK4640 Datasheet, PDF (54/76 Pages) Asahi Kasei Microsystems – 16BIT CODEC WITH MIC /HP/SPK-AMPl | |||
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ASAHI KASEI
[AK4640]
Addr
07H
Register Name
MIC/HP Control
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
AUXAD MPWRE MPWRI MICAD MSEL MGAIN
RD
RD
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
1
MGAIN: 1st Mic-amp Gain control
0: 0dB
1: +20dB (Default)
MSEL: Microphone select
0: Internal MIC (Default)
1: External MIC
MICAD: Switch Control from Mic In to ADC
0: OFF (Default)
1: ON
ALC1 output signal is input to ADC when MICAD bit = â1â.
MPWRI: Power Supply Control for Internal Microphone
0: OFF (Default)
1: ON
The setting of MPWRI is enabled when PMMICL bit = â1â.
MPWRE: Power Supply for External Microphone
0: OFF (Default)
1: ON
The setting of MPWRE is enabled when PMMICL bit = â1â.
AUXAD: Switch Control from AUX IN to ADC.
0: OFF (Default)
1: ON
AUX input signal is input to ADC when AUXAD bit = â1â.
MS0273-E-00
- 54 -
2004/03
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