AK4640_05 AKM [Asahi Kasei Microsystems], AK4640_05 Datasheet - Page 55

• Manufacturer Part Number: AK4640_05
• Description: 16-Bit ?? CODEC with MIC/HP/SPK-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

ASAHI KASEI
MS0273-E-02
Addr
07H
MGAIN: 1
MSEL:
MICAD: Switch Control from Mic In to ADC
MPWRI: Power Supply Control for Internal Microphone
MPWRE: Power Supply for External Microphone
AUXAD: Switch Control from AUX IN to ADC.
0: 0dB
1: +20dB (Default)
0: Internal MIC (Default)
1: External MIC
0: OFF (Default)
1: ON
0: OFF (Default)
1: ON
0: OFF (Default)
1: ON
0: OFF (Default)
1: ON
Register Name
MIC/HP Control
ALC1 output signal is input to ADC when MICAD bit = “1”.
The setting of MPWRI is enabled when PMMICL bit = “1”.
The setting of MPWRE is enabled when PMMICL bit = “1”.
AUX input signal is input to ADC when AUXAD bit = “1”.
Default
Microphone select
R/W
st
Mic-amp Gain control
RD
D7
0
0
RD
D6
0
0
AUXAD
- 55 -
R/W
D5
0
MPWRE
R/W
D4
0
MPWRI
R/W
D3
0
MICAD
R/W
D2
0
MSEL
R/W
D1
0
[AK4640]
MGAIN
2005/04
R/W
D0
1