ak4648 AKM Semiconductor, Inc., ak4648 Datasheet - Page 45

• Manufacturer Part Number: ak4648
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

<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.
MS0625-E-01
MDIF1 bit
LIN1/IN1− pin
RIN1/IN1+ pin
RIN2/IN2− pin
LIN2/IN2+ pin
MIN/LIN3 pin
VCOC/RIN3 pin
LIN4/IN4+ pin
RIN4/IN4− pin
1
0
Figure 32. Connection Example for Full-differential Mic Input (MDIF1/2 bits = “1”)
MDIF2 bit
0
0
AIN3 bit
AIN3 bit
VCOC
AK4648
INL1 bit
1k
1k
Table 21. MIC/Line In Path Select Example
MPWR pin
0
0
IN1+ pin
IN1− pin
Figure 31. Mic/Line Input Selector
INL0 bit
MDIF1 bit
MDIF2 bit
INR1-0 bits
INL1-0 bits
0
1
RIN3
LIN3
Lineout, HP-Amp, SPK-Amp
- 45 -
MIC-Amp
MIC-Amp
MIC-Amp
INR1 bit
0
0
A/D
INR0 bit
1
1
AK4648
IN1+/ −
SDTO pin
LIN2
Lch
ADC Lch
ADC Rch
RIN2
RIN2
Rch
[AK4648]
2007/06