AK4648 Datasheet, PDF (66/119 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/SPK-AMP

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