AK4648 Datasheet, PDF (68/119 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/SPK-AMP

[AK4648]
<Analog Mixing Circuit for Mono Line Output>
DACL, MINL, LINL2, RINR2, LINL3, RINR3, LINL4, RINR4, MICL3, and MICR3 bits control each path switch.
MIN path mixing gain is +6dB(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
0dB
0dB
+6dB
0dB
LINL2 bit
LINL4 bit
MINL bit
LINL3 bit
LIN1 pin
RIN2 pin
RIN4 pin
AIN3 bit
RIN3/VCOM pin
VCOC
RIN1 pin
MIC-Amp Lch
RINR2 bit
0dB
M
RIN3
RINR4 bit
I
0dB
X
MICR3 bit
RINR3 bit
0dB
MIC-Amp Rch
DAC Lch
DAC Rch
DACL bit
0dB
DACL bit
0dB
Note: When MICL3 bit is set to “1”, MIN path is not available.
Figure 50. Mono Line Output Mixing Circuit ( LOVL bit = “0”)
LOP/N pin
MS0625-E-01
- 68 -
2007/06