ASAHI KASEI
[AK4644]
AK4644
INL1-0 bits
LIN1/IN1− pin
ADC Lch
RIN1/IN1+ pin
MIC-Amp
MDIF1 bit
INR1-0 bits
RIN2/IN2− pin
ADC Rch
LIN2/IN2+ pin
MIC-Amp
MDIF2 bit
These blocks are not
available at PLL mode.
MIN/LIN3 pin
VCOC/RIN3 pin
Lineout, Receiver-Amp, HP-Amp, SPK-Amp
Figure 32. Mic/Line Input Selector
AK4644
MPWR pin
1k
1k
MIC-Amp
IN1− pin
SDTO pin
IN1+ pin
A/D
Figure 33. Connection Example for Full-differential Mic Input (MDIF1/2 bits = “1”)
<Input Selector Setting Example>
In case that IN1+/− pins are used as full-differential mic input and LIN2/RIN2 pins are used as stereo line input, it is
recommended that the following two modes are set by register setting according to each case.
MDIF1 bit MDIF2 bit
INL1 bit
INL0 bit
INR1 bit
INR0 bit
Lch
Rch
1
0
0
0
0
0
0
1
0
0
1
1
RIN2
RIN2
IN1+/−
LIN2
Table 22. MIC/Line In Path Select Example
MS0477-E-01
2006/10
- 37 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
