AK4643 Datasheet, PDF (38/104 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/RCV/SPK-AMP

ASAHI KASEI
[AK4643]
„ MIC/LINE Input Selector
The AK4643 has input selector for MIC-Amp. When MDIF1 and MDIF2 bits are “0”, INL1-0 and INR1-0 bits select
LIN1/LIN2/LIN3 and RIN1/RIN2/RIN3, respectively. When MDIF1 and MDIF2 bits are “1”, LIN1, RIN1, LIN2 and
RIN2 pins become IN1−, IN1+, IN2+ and IN2− pins respectively. In this case, full-differential input is available (Figure
33). When full-differential input is used, the signal should not be input to the pins marked by “X” in Table 21.
MDIF1 bit
0
0
0
0
0
0
0
0
0
0
0
1
1
1
Others
MDIF2 bit
0
0
0
0
0
0
0
0
0
1
1
0
0
1
INL1 bit
0
0
0
0
0
0
1
1
1
0
1
0
0
0
INL0 bit
0
0
0
1
1
1
0
0
0
0
0
0
0
0
INR1 bit
0
0
1
0
0
1
0
0
1
0
0
0
1
0
INR0 bit
0
1
0
0
1
0
0
1
0
0
0
1
0
0
Table 20. MIC/Line In Path Select
Lch
LIN1
LIN1
LIN1
LIN2
LIN2
LIN2
LIN3
LIN3
LIN3
LIN1
LIN3
IN1+/−
IN1+/−
IN1+/−
N/A
Rch
RIN1
RIN2
RIN3
RIN1
RIN2
RIN3
RIN1
RIN2
RIN3
IN2+/−
IN2+/−
RIN2
RIN3
IN2+/−
N/A
Default
Register
Pin
AIN3 bit
MDIF1 bit MDIF2 bit
LIN1
IN1−
RIN1
IN1+
LIN2
IN2+
RIN2
IN2−
MIN VCOC
LIN3 RIN3
0
0
0
O
O
O
O
O
-
0
0
1
O
X
O
O
O
-
0
1
0
O
O
X
O
O
-
0
1
1
O
O
O
O
O
-
1
0
0
O
O
O
O
O
O
1
0
1
O
X
O
O
O
X
1
1
0
O
O
X
O
X
O
1
1
1
O
O
O
O
X
X
Table 21. Handling of MIC/Line Input Pins (“-”: N/A; “X”: Signal should not be input.)
MS0476-E-01
- 38 -
2006/10