[AK4675]
■ Analog Mixing: Single-ended Input (LIN1/RIN1/LIN2/RIN2/LIN3/RIN3/LIN4/RIN4 pins)
AK4675 supports analog mixing function from each line input to each line output (Figure 63).
When the analog mixing is used, A/D converter is also available if PMADL or PMADR bit is “1”. When
PMAINL1=PMAINR1=PMAINL2=PMAINR2=PMAINL3=PMAINR3=PMAINL4=PMAINR4=PMMICL=PMMICR
bits = “1”, the input resistance of LIN1/RIN1/LIN2/RIN2/LIN3/RIN3/LIN4/RIN4 pins becomes 25kΩ (typ) at
MGNL/R0 bits = “0” and 20kΩ (typ) at MGNL/R0 bits = “1”, respectively.
L1G1-0, L2G1-0, L3G1-0, L4G1-0 and LPG1-0 bits adjust the gain for each path (Table 60, Table 61, Table 62, Table 63,
Table 64).
AK4675
INL4-0 bits
LIN1/IN1+ pin
ADC Lch
RIN1/IN1− pin
MIC-Amp Lch
MDIF1 bit
MDIF3 bit
INR4-0 bits
LIN2/IN2+ pin
ADC Rch
RIN2/IN2− pin
MIC-Amp Rch
MDIF2 bit
MDIF4 bit
LIN3/IN3+ pin
RIN3/IN3− pin
LIN4/IN4+ pin
RIN4/IN4− pin
Figure 63, 64, 66, 67
Figure 68, 69
Figure 72, 73, 75, 76
LOUT1 pin
ROUT1 pin
LOUT2S pin
ROUT2S pin
LOUT3 pin
ROUT3 pin
Figure 63. Analog Mixing Circuit
MS0963-E-00
2008/05
- 90 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
