— 46 —
IC3401 AUDIO PROCESSOR BLOCK DIAGRAM
10
PCINT1
11
PCINT2
12
PLINT
21
SUBOUT
34
AUX1-L
33
AUX1-R
9
MAINOUT
8
MAININ
10
COMPIN
19
Vcc
17
GND
23
NOISETC
18
SAPTC
LFL
T
V
CO
"STEREO"
LPF
VCA
LPF
LPF
VCA
FL
T
LPF
1/4
1/2
DeEm
SAPVCO
BPF
STIND
(+6dB)
ATT/A
TTSW
"NOISE"
"SAP"
"PONRES"
14
VGR
15
IREF
24
SAPOUT
25
SAPIN
22
STIN
26
VE
27
VEWQT
28
VETC
29
VEOUT
30
VCAIN
32
VCAWQT
31
VCA TC
1
TOUT
-L
48
VOLIN-L
4
LSOUT -L
3
LSOUT -R
7
DGND
6
SCL
5
SDA
NOISE
DET
SAPIND
IREF
I2C B
U
S I/F
SW
AMP
(+6dB)
LPF
LPF
HPF
DeEm
LOGIC
SPECTRAL
RMSDET
RMSDET
VE
VCA
48
V
OLIN-R
44
TOUT
-R
41
TRE-R
47
TRE-L
45
BASS-R
2
BASS-L
40
SURR
TC
38
TV
OUT
-R
36
A
UX2-R
37
A
UX2-L
39
TV
OUT
-L
VOL-L
VOL-L
VOL-R
VOL-R
TREB
TREB
TREBLE
BASS
BASS
BASS
SURR
M2
FEXT1
FEXT2
EXT1/EXT2/M1
SURR
OUND
TVSW
MA
TRIX
WIDEBAND
NRSW/FOMO/SAPC