Pioneer PRO-720HD Service Manual page 51

CXA2094Q (SIGNAL ASSY : IC2801)
• US Audio Multi-channel Decoder IC
•
Block Diagram
45 44
AUX1-R 41
TVSW
AUX1-L 42
FEXT1
MATRIX
MAININ 3
MAINOUT 4
SUBOUT 22
PLINT 11
PCINT2 9
PCINT1 8
STLPF
47 46 40 39
FEXT2
TVSW/EXT/M1
LOGIC
VCA
LPF LPF LPF
DeEm
1/4
FLT
STIND
VCO
LFLT
LPF
ATT/
VCA
INSW
12
PRO-720HD, PRO-620HD, PRO-520HD
38
LPF
VCA RMSDET
RMSDET
VE
LPF LPF
LPF
DeEm
AMP
(+4dB)
LPF
SAP NOISE SAP
VCO DET IND
BPF
20 17 24 18
36 VCATC
37 VCAWGT
VCAIN
35
34 VEOUT
VETC
33
32 VEWGT
SPECTRAL
23 STIN
SW
27
SAPIN
28 VE
SAPOUT
25
"PONRES"
SDA
48
I2C
BUS SCL
1
I/F
2 DGND
15 IREF
IREF
14 VGR
233