63
SCHEMATIC DIAGRAM /
原理图
TK-3178
(
L
)
X57-701 (B/4) 2/6, X57-701 (D/4) 1/1
J
I
H
G
F
-t
KEY3I
KEY4O
DMUTE
SEL
KEY4I
KEY3O
RX
KEY2I
KEY2O
KEY1O
WIDE
NARROW
KEY1I
D6
D7
D0
D1
D2
D3
D4
D5
A0
WE
LCONT
LCDRST
CS2
TX
1
STRB
2
DATA
3
CLK
4
DMUTE
5
SSBC
6
WIDE
7
NARROW
8
VSS
9
QS
10
Q’S
11
TX
12
RX
13
OPST
14
VOXMUTE
15
OE
16
VDD
1
STRB
2
DATA
3
CLK
4
5MSC
5
SAVE
6
STSW
7
AM1
8
VSS
9
QS
10
Q’S
11
AQSFT
12
QTSW
13
LCDBL
14
MMUTE
15
OE
16
VDD
C44
0.01u
R31
10k
R40
47k
C43
0.01u
R37
10k
R285
10k
R274
27k
C221
220p
C216
1u
R287
0
R276
0
C212
2.2u16
R278
100k
1
DIR
2
A1
3
A2
4
GND
5
B2
6
B1
7
G
8
VCC
R295
10k
C209
0.1u
R284
10k
R266
10
R277
0
L19
C290
2.2u16
C215
1000p
R272
100
C210
100p
R294
10k
R290
10k
C214
1000p
CN82
1
V5
2
V4
3
V3
4
V2
5
V1
6
VDD
7
VSS
8
VDD
9
D7
10
D6
11
D5
12
D4
13
D3
14
D2
15
D1
16
D0
17
/WR
18
A0
19
/RES
20
/CS
C251
1u
C254
1u
R282
0
1
C1-
2
C2+
3
C2-
4
VoUT
5
GND
6
VIN
7
C1+
8
NC
C253
1u
R297
10k
R293
10k
R265
390k
R269
47
C296
0.1u
R291
10k
C252
1u
VR1 47k
R292
10k
C220
0.1u
R268
12k
C213
2.2u16
TH1
100k
C208
100p
C223
0.1u
R271
0
IC28
TC74LCX245FK
1
DIR
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
GND
11
12
13
14
15
16
17
18
19
20
CN81
1
+IN
2
V-
3
-IN
4
oUT
5
V+
R296
10k
R267
68k
L17
L20
D27
MA2S111-F
D25
MA2S111-F
D26
MA2S111-F
D24
MA2S111-F
C217
0.1u
9
4
5T
7
VOLIN
LEDR
SSBC
A
CK
RESET
2
SB
C
STSW
3
6
LEDG
5M
INT
S
5RC
STSW
INT
LEDG
5MSC
*
#
4KEY BOARD
(X57-7013-06) (D/4)
BATT
B
LEDR
SSB
TX
5
LCDBL
VOLIN
5C
DT
5R
0
SSBC
8
1
SEL
PTTI
PTTI
AUX
5RC
33MS
SFTSTB
5MCPU
RESET
33MSC
33MS
5MCPU
AUX
5M
33M
33MSC
5M
5TC
5MS
LCDBL
SAVE
SAVE
33MS
33M
BUS SW
5MS
5TC
SIDE2
SIDE1
LSW
SIDE2
SIDE1
BATT
5T
SSB
5C
SB
5R
AFCO
MMUTE
OPST
VOXMUTE
LCD
LEDR
LEDG
33M
5MCPU
33MSC
5TC
5M
SFTOE
SFTOE
SFTSTB
B8
B7
B6
B5
B4
B3
B2
B1
oE
VCC
IC25
TC7WZ245FK-F
BUS SW
IC24
LM2682MMX
VOLTAGE
DOUBLING
INVERTER
IC27
NJM2130F3-ZB
LCD CONTRAST
IC4
BU4094BCFV
SHIFT REGISTER
D24-27
KEY
INPUT
DETECT
IC5
BU4094BCFV
SHIFT REGISTER
ON:0V(Lo)
OFF:4.8V(Hi)
-9.96V
5V
ON:5V
OFF:0V
TX-RX UNIT (X57-7013-06) (B/4)