AK4640_05 Datasheet, PDF (55/78 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ CODEC with MIC/HP/SPK-AMP

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: 1^st 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 = “1”.
MPWRI: Power Supply Control for Internal Microphone
0: OFF (Default)
1: ON
The setting of MPWRI is enabled when PMMICL bit = “1”.
MPWRE: Power Supply for External Microphone
0: OFF (Default)
1: ON
The setting of MPWRE is enabled when PMMICL bit = “1”.
AUXAD: Switch Control from AUX IN to ADC.
0: OFF (Default)
1: ON
AUX input signal is input to ADC when AUXAD bit = “1”.
MS0273-E-02
- 55 -
2005/04