AKD4691-A Datasheet, PDF (16/68 Pages) Asahi Kasei Microsystems – Evaluation board Rev.0 for AK4691

„ Analog Input/Output Circuits
(1) Input Circuits
6
J1
MIC1/BEEP
4
3
6
J2
MIC2
4
3
6
J3
LIN/RIN
4
3
[AKD4691-A]
C12
1u
JP27
BEEP
INTL1
EXTL1
L1-SEL
R23
20k
BEEP
INTL1
EXTL1
JP28
INTR1
EXTR1
R1-SEL
INTR1
EXTR1
R1
(short)
JP29
INTL2
EXTL2
L2-SEL
JP30
INTR2
EXTR2
R2-SEL
C13
R2
1u
(open)
R3
(short)
R4
(open)
C14
1u
INTL2
EXTL2
INTR2
EXTR2
LIN
RIN
Figure 7. INTL1/INTR1, INTL2/INTR2, EXTL1/EXTR1, EXTL2/EXTR2, BEEP, LIN/RIN Input Circuits
(1-1) INTL1/INTR1 Input Circuit
INTL1/INTR1 is input from J1. JP27 and JP28 should be set as the following.
When the Mic Power is not used, JP101 and JP103 should be set to open.
JP27
L1-SEL
BEEP
INTL1
EXTL1
JP28
R1-SEL
INTR1
EXTR1
JP101
INTL1
JP103
INTR1
<KM089100>
- 16 -
2007/06