AK4671_10 Datasheet, PDF (81/166 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/RCV/HP-AMP

[AK4671]
■ Analog Mixing: Single-ended Input (LIN1/RIN1/LIN2/RIN2/LIN3/RIN3/LIN4/RIN4 pins)
AK4671 supports analog mixing function from each line input to each line output (Figure 64).
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).
AK4671
LIN1/IN1+ pin
RIN1/IN1− pin
INL4-0 bits
MDIF1 bit ^{MIC-Amp Lch}
MDIF3 bit
ADC Lch
LIN2/IN2+ pin
RIN2/IN2− pin
LIN3/IN3+ pin
RIN3/IN3− pin
INR4-0 bits
MDIF2 bit ^{MIC-Amp Rch}
MDIF4 bit
ADC Rch
LIN4/IN4+ pin
RIN4/IN4− pin
Figure 56, 57, 59, 60
Figure 62, 63
Figure 66, 67, 69, 70
LOUT1 pin
ROUT1 pin
LOUT2 pin
ROUT2 pin
Figure 64. Analog Mixing Circuit
LOUT3 pin
ROUT3 pin
MS0666-E-02
- 81 -
2010/06