[AK4675]
MS0963-E-00
2008/05
- 90 -
ミ
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 (
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 25k
Ω
(typ) at
MGNL/R0 bits = “0” and 20k
Ω
(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 (
,
).
LIN1/IN1+ pin
ADC Lch
RIN1/IN1
−
pin
INL4-0 bits
MDIF1 bit
MDIF3 bit
LIN2/IN2+ pin
ADC Rch
RIN2/IN2
−
pin
INR4-0 bits
MDIF2 bit
MDIF4 bit
AK4675
LIN3/IN3+ pin
RIN3/IN3
−
pin
MIC-Amp Lch
MIC-Amp Rch
PM
AINL
3
b
it
PM
AINR3
bi
t
PM
AINL
2
b
it
PM
AINR2
bi
t
PM
AINL
1
b
it
PM
AINR1
bi
t
LIN4/IN4+ pin
RIN4/IN4
−
pin
PM
LO
O
P
L
b
it
PM
LOO
P
R b
it
PM
AINL
4
b
it
PM
AINR4
bi
t
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