AK4640 Datasheet, PDF (49/76 Pages) Asahi Kasei Microsystems – 16BIT CODEC WITH MIC /HP/SPK-AMPl

ASAHI KASEI
[AK4640]
MIC In
0dB/+20dB
ATT
IPGA
DAHS bit
ATT+DAC
MICL bit
ALC2
ALCS bit
AUXIN+
AUXIN-
BEEPM
BEEPL
BEEPR
AUXL bit
Volume _{BPMSP bit}
SPK-AMP
1/2
1/2
BPSSP bit
Figure 40. Speaker-amp switch control
Addr
03H
Register Name
Signal Select 2
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
DAHS
0
AUXL MICL BPSHP BPMHP HPL
HPR
R/W
RD
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
1
1
HPR: Rch of Headphone-Amp Power Control
0: Normal Operation
1: OFF(Default)
HPL: Lch of Headphone-Amp Power Control
0: Normal Operation
1: OFF(Default)
BPMHP: BEEPM to Headphone-amp Enable
0: OFF (Default)
1: ON
Mono BEEP signal (BEEPM) is mixed to Headphone-amp at the BPMHP bit = “1”.
BPSHP: BEEPL/BEEPR to Headphone-amp Enable
0: OFF (Default)
1: ON
Stereo BEEP signals (BEEPL/BEEPR) is mixed to Headphone-amp at the BPSHP bit = “1”.
MICL: IPGA to Headphone-amp and MOUT2 Enable
0: OFF (Default)
1: ON
IPGA output signal is mixed to Headphone-amp and MOUT2 at the MICL bit = “1”.
AUXL: AUX IN to Stereo Mixer Enable
0: OFF (Default)
1: ON
AUX input signal is mixed to Headphone-amp and MOUT2 at the AUXL bit = “1”.
MS0273-E-00
- 49 -
2004/03