HCD-GTR33/GTR55/GTR77
42
INDR
6 INPUT
SELECTOR
(R-CH)
INER
INFR
GAMER
INGAINOUTR
RECAR
INCR
INBR
INAR
DPLR/SURR
DPLL/SURL
TRER
TONE
R
(TRE,
MID,
BASS)
MID1R
MID2R
BASS1R
BASS2R
VOCAL CUT
REFERENCE
SURROUND OR DPL IN
RECBR
+
+
+
+
SA1
SA2
+
TO
N
EO
U
TR
BB1R
DA
TA
CLK
AGCC
OUTR
AGCOUTR
SWOUT
BB2R
VOLINR
ELECTRICAL
VOLUME
MCU
INTERFACE
AUTO
GAIN
CONTROL
+
INDL
6 INPUT
SELECTOR
(L-CH)
INEL
INFL
GAMEL
INGAINOUTL
RECAL
INAL
INBL
INCL
MIC
VC
TREL
TONE
L
(TRE,
MID,
BASS)
MID1L
MID2L
BASS1
BASS2
RECBL
+
+
+
TONEOUTL
BB1L
OUTL
AGCOUTL
BB2L
VOLINL
ELECTRICAL
VOLUME
REFIN
REFOUT
VCC
GND
1
2
3
4
5
6
10
11
12
13
14
7
8
9
15
17
21 22
24
19
20
23
18
16
28
26
25
27
42
41
40
39
38
37
35
34
33
32
31
36
30
29
54
55
52
53
56
43
44
45
46
47
48
49
50
51
IC252, IC253 NJM4558V-TE2 (MAIN Board (2/3))
IC700 NJM4558V-TE2 (MIC Board)
IC677 SI-8008TM-TLS (MAIN Board (3/3))
1
2
A OUT
A –IN
A +IN
V–
3
4
8
7
V+
B OUT
B –IN
B +IN
6
5
1
2
5
4
LATCH
&
DRIVER
ERROR AMP
COMPARATOR
OSCILLATOR
RESET
OVERCURRENT
PROTECTION
THERMAL
PROTECTION
REFERENCE
VOLTAGE
3
ON/OFF
SOFT
START
PREG
+
+
+
–
–
IN
SW
SS
ADJ
GND