ak4644 AKM Semiconductor, Inc., ak4644 Datasheet - Page 37

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

ASAHI KASEI
<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.
MS0477-E-01
MDIF1 bit
1
0
Figure 33. Connection Example for Full-differential Mic Input (MDIF1/2 bits = “1”)
LIN1/IN1− pin
RIN1/IN1+ pin
RIN2/IN2− pin
LIN2/IN2+ pin
MIN/LIN3 pin
VCOC/RIN3 pin
MDIF2 bit
0
0
AK4644
INL1 bit
1k
1k
Table 22. MIC/Line In Path Select Example
MPWR pin
0
0
IN1+ pin
IN1− pin
Figure 32. Mic/Line Input Selector
INL0 bit
MDIF1 bit
MDIF2 bit
INR1-0 bits
INL1-0 bits
Lineout, Receiver-Amp, HP-Amp, SPK-Amp
0
1
- 37 -
MIC-Amp
MIC-Amp
MIC-Amp
INR1 bit
0
0
A/D
INR0 bit
1
1
AK4644
available at PLL mode.
These blocks are not
ADC Lch
ADC Rch
IN1+/−
SDTO pin
LIN2
Lch
RIN2
RIN2
Rch
[AK4644]
2006/10