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ASAHI KASEI
[AKD4633-A]
<KM079407>
2016/10
- 12 -
Analog Input / Output Circuits
(1) Input Circuits
a) MIC Input Circuit
Figure 3. MIC Input Circuit
(a-1) Analog signal is input to MIC pin via J1 connector.
JP12
MIC_SEL
JACK
RCA
(a-2) Analog signal is input to MIC pin via J3 connector.
JP12
MIC_SEL
JACK
RCA
b) BEEP Input Circuit
AVSS
R19
20k
BEEP
BEEP
2
3
1
J4
MR-552LS
AVSS
R18
47k
1
2
+
C26
1u
Figure 4. BEEP Input Circuit
J3
MR-552LS
AVSS
AVSS
JACK
1
JP12
MIC_SEL
INT
MIC
3
RCA
J1
MIC-JACK
6
4
3
2