AK4645 Datasheet, PDF (61/96 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

ASAHI KASEI
[AK4645]
<Analog Mixing Circuit for Mono Line Output>
When AIN3 bit = “0”, DACL, MINL, LINL2, RINR2, LINL4 and RINR4 bits controls each path switch.
MIN path mixing gain is +6dB(typ)@LOVL bit = “0” when the external input resistance is 20kΩ.
LIN2, RIN2, LIN4, RIN4 and DAC pathes mixing gain is 0dB(typ)@LOVL bit = “0”.
LINL2 bit
LIN2 pin
0dB
RIN2 pin
RINR2 bit
0dB
LIN4 pin
RIN4 pin
MIN pin
0dB
0dB
+6dB
LINL4 bit
M
RINR4 bit
I
X
MINL bit
LOP/N pin
DAC Lch
DACL bit
0dB
DAC Rch
DACL bit
0dB
Figure 54. Mono Line Output Mixing Circuit (AIN3 bit = “0”, LOVL bit = “0”)
When AIN3 bit = “1”, DACL, LINL2, RINR2, LINL3, RINR3, LINL4, RINR4, MICL3 and MICR3 bits controls each
path switch.
All pathes mixing gain is 0dB(typ)@LOVL bit = “0”.
LINL2 bit
LIN2 pin
0dB
LINL4 bit
LIN4 pin
0dB
LIN3 pin
MICL3 bit
LINL3 bit
0dB
LIN1 pin
RIN2 pin
RIN4 pin
RIN3 pin
MIC-Amp Lch
*These blocks are not
available at PLL mode.
RINR2 bit
0dB
M
RINR4 bit
I
0dB
X
MICR3 bit
RINR3 bit
0dB
LOP/N pin
RIN1 pin
MIC-Amp Rch
DAC Lch
*These blocks are not
available at PLL mode.
DACL bit
0dB
DAC Rch
DACL bit
0dB
Figure 55. Mono Line Output Mixing Circuit (AIN3 bit = “1”, LOVL bit = “0”)
MS0543-E-00
- 61 -
2006/09