ak4644 AKM Semiconductor, Inc., ak4644 Datasheet - Page 36

• Manufacturer Part Number: ak4644
• Description: Stereo Codec With Mic/hp/rcv-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The AK4644 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.
MS0477-E-01
MDIF1 bit
Others
MIC/LINE Input Selector
0
0
0
0
0
0
0
0
0
0
0
1
1
1
AIN3 bit
Register
MDIF2 bit
0
0
0
0
1
1
1
1
Table 21. Handling of MIC/Line Input Pins (“-“: N/A; “X”: Signal should not be input.)
0
0
0
0
0
0
0
0
0
1
1
0
0
1
MDIF1 bit
0
0
1
1
0
0
1
1
INL1 bit
0
0
0
0
0
0
1
1
1
0
1
0
0
0
MDIF2 bit
0
1
0
1
0
1
0
1
INL0 bit
Table 20. MIC/Line In Path Select
0
0
0
1
1
1
0
0
0
0
0
0
0
0
LIN1
IN1−
Pin
O
O
O
O
O
O
O
O
INR1 bit
- 36 -
0
0
1
0
0
1
0
0
1
0
0
0
1
0
RIN1
IN1+
O
X
O
O
O
X
O
O
INR0 bit
LIN2
IN2+
0
1
0
0
1
0
0
1
0
0
0
1
0
0
O
O
X
O
O
O
X
O
RIN2
IN2−
IN1+/−
IN1+/−
IN1+/−
O
O
O
O
O
O
O
O
LIN1
LIN1
LIN1
LIN2
LIN2
LIN2
LIN3
LIN3
LIN3
LIN1
LIN3
N/A
Lch
LIN3
MIN
O
O
O
O
O
O
X
X
IN2+/−
IN2+/−
IN2+/−
RIN1
RIN2
RIN3
RIN1
RIN2
RIN3
RIN1
RIN2
RIN3
RIN2
RIN3
N/A
Rch
VCOC
RIN3
O
X
O
X
-
-
-
-
[AK4644]
Default
2006/10