AK4648 Datasheet, PDF (45/119 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/SPK-AMP

LIN1/IN1− pin
RIN1/IN1+ pin
AK4648
RIN2/IN2− pin
LIN2/IN2+ pin
MIN/LIN3 pin
VCOC/RIN3 pin
AIN3 bit
AIN3 bit
LIN4/IN4+ pin
RIN4/IN4− pin
VCOC
INL1-0 bits
MDIF1 bit ^MIC-Amp
INR1-0 bits
MDIF2 bit ^MIC-Amp
LIN3
RIN3
[AK4648]
ADC Lch
ADC Rch
Lineout, HP-Amp, SPK-Amp
Figure 31. Mic/Line Input Selector
MPWR pin
1k
IN1− pin
IN1+ pin
1k
AK4648
MIC-Amp
A/D
SDTO pin
Figure 32. 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
1
0
0
0
INL1 bit INL0 bit INR1 bit INR0 bit
0
0
0
1
0
1
0
1
Table 21. MIC/Line In Path Select Example
Lch
IN1+/−
LIN2
Rch
RIN2
RIN2
MS0625-E-01
- 45 -
2007/06