MX-K35V
1-34
TDA7440D (IC101) : Audio processor
1. Terminal layout
2. Block diagram
0/30dB
2dB STEP
MUXO-L IN(L)
VOLUME
VOLUME
TREBLE
TREBLE
TRE(L)
MUXO-R IN(R)
TRE(R)
BOUT(L)
SPKR ATT
LEFT
LOUT
SCL
SDA
DGND
ROUT
I
2
CBUS D LATCHES
100K
100K
100K
100K
G
LIN1
LIN2
LIN3
LIN4
100K
100K
100K
100K
RIN1
RIN2
RIN3
RIN4
G
INPUT MULTIPLEXER
+ GAIN
BASS
BIN(L)
BASS
SPKR ATT
RIGHT
BOUT(R)
BIN(R)
SUPPLY
CREF
AGND
VS
27
4
5
6
7
3
2
1
28
21
22
20
26
24
25
10
11
19
12
13
23
8
9
18
14
15
R
B
R
B
V
REF
LIN3
LIN4
MUXO-L
IN(L)
MUXO-R
BIN(R)
IN(R)
BOUT(R)
BIN(L)
1
3
2
4
5
6
7
8
9
BOUT(L)
LP
PS1
TRE(R)
TRE(L)
SCL
SDA
DGND
CREF
23
22
21
20
19
17
18
16
15
10
11
12
13
14
28
27
26
25
24
RIN3
RIN2
RIN1
LIN1
LIN2
VS
AGND
ROUT
LOUT
RIN4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VPP
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
GND
VCC
PGM
A17
A14
A13
A8
A9
A11
OE
A10
CE
D7
D6
D5
D4
D3
27C020 (IC104) : 2MB PROM
1. Terminal layout
PIN No.
Symbol
Function
1
2~12
13~15
16
17~21
22
23
24
25~30
31
32
Power supply terminal
Address input
Data input/output
Ground terminal
Data input/output
Chip enable terminal
Address input
Output enable teminal
Address input
Program strobe
Power supply terminal
VPP
A16,A15,A12,A7~A0
D0~D2
GND
D3~D7
CE
A10
OE
A11,A9,A8,A13,A14,A17
PGM
VCC
I/O
-
I
I/O
-
I/O
I
I
I
I
I
-
2. Pin function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
VCC
D0
D1
D2
D3
VCC
D4
D5
D6
D7
NC
NC
WE
RAS
NC
A0
GND
D15
D14
D13
D12
GND
D11
D10
D9
D8
NC
CASL
CASH
OE
A8
A7
4C16256 (IC103) : 4MB EDO-RAM
1. Terminal layout
PIN No.
Symbol
Function
1,6,20
2~5,7~10,
31~34,36~39
11,12,15,30
13
14
16~19,22~26
21,35,40
27
28
29
Power supply terminal
Data input/output
Not used
Write enable terminal
Row address strobe terminal
Address input
Ground teminal
Output enable terminal
Upper column address strobe terminal
Lower column address strobe terminal
VCC
D0~D15
NC
WE
RAS
A0~A8
GND
OE
CASH
CASL
I/O
-
I/O
-
I
I
I
-
I
I
I
2. Pin function
A1
A2
A3
VCC
17
18
19
20
A6
A5
A4
GND
24
23
22
21