AK4538 Datasheet, PDF (46/70 Pages) Asahi Kasei Microsystems – 16Bit DS CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4538]
MIC In
0dB/+20dB
ATT
IPGA
ATT+DAC
“DAHS”
“MICL”
ALC2
AUXIN+
AUXIN-
BEEPM
BEEPL
BEEPR
“AUXL”
Volume
“BPMSP”
“BPSSP”
“ALCS”
SPK-AMP
1/2
1/2
Figure 44. Speaker-amp switch control
Addr
03H
Register Name
Signal Select 2
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
DAHS PSLO AUXL MICL BPSHP BPMHP HPL
HPR
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
1
1
HPR: Rch Headphone-amp Disable
0: Normal Operation
1: OFF(Default)
The HPR bit should be always “0” during operation.
HPL: Lch Headphone-amp Disable
0: Normal Operation
1: OFF(Default)
The HPL bit should be always “0” during operation.
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: Switch Control from MIC IN to Stereo Mixer.
0: OFF (Default)
1: ON
AUXL: Switch Control from AUX IN to Stereo Mixer.
0: OFF (Default)
1: ON
MS0198-E-01
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2003/5