ak4648 AKM Semiconductor, Inc., ak4648 Datasheet - Page 66

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

<Analog Mixing Circuit for Stereo Line Output>
DACL, MINL, LINL2, RINR2, LINL3, RINR3, LINL4, RINR4, MICL3, and MICR3 bits control each path switch. MIN
path mixing gain is 0dB(typ.)@LOVL bit = “0” when AIN3 bit is “0” and the external input resistance is 20k Ω . LIN2,
RIN2, LIN3, RIN3, LIN4, RIN4 and DAC paths mixing gain is 0dB(typ.)@LOVL bit = “0”.
MS0625-E-01
RIN3/VCOM pin
LIN3/MIN pin
LIN2 pin
LIN4 pin
LIN1 pin
RIN2 pin
RIN4 pin
RIN1 pin
AIN3 bit
AIN3 bit
VCOC
Note: When MICL3 bit is set to “1”, MIN path is not available.
Figure 47. Stereo line output Mixing Circuit (LOVL bit = “0”)
LIN3
MIN
RIN3
MIC-Amp Lch
MIC-Amp Rch
DAC Rch
DAC Lch
MICL3 bit
MICR3 bit
- 66 -
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
RINR2 bit
RINR4 bit
RINR3 bit
LINL4 bit
LINL2 bit
LINL3 bit
DACL bit
DACL bit
MINL bit
MINL bit
M
M
X
X
I
I
LOUT pin
ROUT pin
[AK4648]
2007/06