ASAHI KASEI
[AK4644]
<Analog Mixing Circuit for Stereo Line Output>
When AIN3 bit = “0”, DACL, MINL, LINL2 and RINR2 bits controls each path switch.
MIN path mixing gain is 0dB(typ)@LOVL bit = “0” when the external input resistance is 20kΩ.
LIN2, RIN2 and DAC pathes mixing gain is 0dB(typ)@LOVL bit = “0”.
LINL2 bit
LIN2 pin
MIN pin
0dB
0dB
0dB
M
I
MINL bit
DACL bit
LOUT pin
X
DAC Lch
Figure 47. LOUT Mixing Circuit (AIN3 bit = “0”, LOVL bit = “0”)
RINR2 bit
RIN2 pin
0dB
0dB
0dB
M
I
MINL bit
DACL bit
MIN pin
ROUT pin
X
DAC Rch
Figure 48. ROUT Mixing Circuit (AIN3 bit = “0”, LOVL bit = “0”)
When AIN3 bit = “1”, DACL, LINL2, RINR2, LINL3, RINR3, MICL3 and MICR3 bits controls each path switch. All
pathes mixing gain is 0dB(typ)@LOVL bit = “0”.
LINL2 bit
LIN2 pin
LIN3 pin
0dB
M
I
MICL3 bit
LINL3 bit
LOUT pin
0dB
X
*These blocks are not
available at PLL mode.
LIN1 pin
MIC-Amp Lch
DAC Lch
DACL bit
0dB
Figure 49. LOUT Mixing Circuit (AIN3 bit = “1”, LOVL bit = “0”)
RINR2 bit
0dB
RIN2 pin
RIN3 pin
M
MICR3 bit
RINR3 bit
ROUT pin
I
0dB
X
*These blocks are not
available at PLL mode.
RIN1 pin
MIC-Amp Rch
DACL bit
DAC Lch
0dB
Figure 50. ROUT Mixing Circuit (AIN3 bit = “1”, LOVL bit = “0”)
MS0477-E-01
2006/10
- 56 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
