RX-340 Schematics

RX-340 Schematics
REFERENCE
SYNTHESIZERS
LO & MIXER
CLK
DAT
ENA 1
ENA 2
ENA 3
CLK
DAT
ENA 1
INA1
INA2
INA1
LD
SOL
CLK
DAT
ENA 3
ENA 2
LD
INA2
SOL
ACQUIRE
ACQUIRE
10MHz
10MHz
PRESTEER
OSC IN
PRESTEER
10MHz
OSC IN
RX-340
81772
A
C
B
E
D
G
F
5
U1C
74HC04
+5v
+12v
U5D
74HC00
5
1
2
3
4
5
-12v
-5v
C21
10uF TANT
12
11
R13
150
R12
150
MT5
6
H
R14
3.3k
T1
CT-600CT
VCC
6
600 OHM LINE
(LSB)
6
5
4
3
2
1
9
C18
10uF TANT
C71
33uF
A+
ACT
AB+
BCT
B-
R15
22k
U17A
Tl082
C70
33uF
2
8
R17
47
MT6
(USB)
C68
.1uF FILM
3
13
C20
C19
10uF TANT 10uF TANT
4
1
5
C69
.1uF
R16
100k
+12v
600 OHM LINE
9
+5v
C3
.1uF
U1D
74HC04
16
R2
100k
C67
33uF
10MHz
+5v
TMP
1
1
13
12
50
+5v
4
U3
74HC74
5
6
7
14
15
13
12
11
10
9
4
MT2
U5B
74HC00
3
U1F
74HC04
2
68
6
4
3
2
1
5
6
10
11
12
13
9
8
5
D2
10
4
9
SEL1
2
1
0
1
9
U4B
74HC00
6
U4C
74HC00
1 23 4
8
3
8
U5A
74HC00
U5C
74HC00
U9B
74HC4053
MT2
U1E
74HC04
15
MONO AUDIO
U4A
74HC00
8 7 16 6
R8
10
8 7 16 6
R4
4.7k
CONVST
3
5
CLK
4
5
MT6
3
6
5
4
3
2
1
4
74HC04
U6E
R5
47
6
74HC04
U6B
10
11
74HC04
U1A
74HC04
13
REF-O
SCLK
AGND
2
C56
.1uF
14
51
8 7 16 6
2
+5v
+5v
+5v
10
TP1
9
VDD
C28
.1uF
R9
10
C27
.1uF
C30
.1uF
C4
10uF TANT
C8
.01uF FILM
C32
.0015uF FILM
R66
1k
R63
1k
R67
1k
C35
470pF
-5v +5v
.1uF
U1B
74HC04
-5v +5v
R62
10k
R61
10k
8
U11B
Tl082
R47
2.2k
3
R32
47
.1uF
U11A
Tl082
C37
.1uF
4
R46
82k
R45
33k
8 7 16
8
6
C63
.1uF FILM
5
2
C31
.001uF FILM
7
3
C33
.01uF FILM
4
4
C34
470pF
R33
10k
4
9
R88
47
3
2
1
5
CS/SERIAL
2
3
MT3
REFIN
REF-O
D12/SCLK
5
R83
4.7k
2
WR/SYNC
D13/SDATA
4
+5v
64
9
D7
11
12
R82
2.2k SM
VDD
D8
10
2
AGND
D9
8
DAC SCLK
VOUT
D10/JUST
7
TMP
1
VSS
D11/FORM
6
C11
10uF TANT
LDAC 24
D0
U8
AD7840
D1
D6
D2
D5
D3
DGND
D4
1
R24
470
U16A
Tl082
U9C
74HC4053
4
R23
100k
R44
47
13
1
8
2
+5v
U4D
74HC00
-5v
SSB-AM/FM
C62
.1uF
3
5
+5v
R76
10
3
+12v
R64
1k
1
C10
.1uF
-5v
R60
47
+5v
6
R84
4.7k
R41
1k
11
3
+5v
C52
.1uF
+12v
C29
.1uF
C5
R7
4.7k
C53
.1uF
C57
1uF TANT
R38
1k
8 7 16 6
1
2
R27
47
TMP
12
NC
U7
AD7872
7 8
13
1
13
CREF
DGND
R6
2.2k
74HC04
U6A
U6F
12
6 16
8
MT2
U9A
74HC4053
14
SSTRB
NC
3
8
1
C54
470pF
C58
33uF
12
14
13
15
VSS
VIN
SDATA
7
4
C6
10uF TANT
16
VDD
CNTRL
2
U6C
6
3
3
C59
33uF
5
4
1
11
11
12
9
2
U15C
74HC4053
R37
10k
-5v
1
74HC04
R36
10k
74HC4053
C7
.1uF
+5v
C9
.1uF
U6D
C55
470pF
U18A
4
Tl082
R26
470
2
1
7
4
7 8
9
1
U10A
R3
47
R28
100k
12
2
1
1
+5v
1
MT2
2
15
1
2
15
6 16
MT2
2
2
3
R34
10k
MMSD914
U10B
10 74HC4053
10
R35
10k
D3
D4
69
MMSD914
10
MMSD914
DC COUPLED
AUDIO
2
1
U15B
74HC4053
1
0
R40
47
R92
4.7k SM
2
1
10
8
2
1
18
MUTE
MT2
MT4
MMSD914
D1
8
-12v
SEL2
5
R21
100k
C65
.1uF
R39
47
MT2
2
1
4
4
R22
47
R91
470k
MT2
34
74HC04
5
6
Q1
MMBT3906LT1
MUTE
C64
.1uF FILM
8
7
R90
10k
2
1
66
11
U17B
Tl082
C66
33uF
R89
3.3k
2
R1
330
R20
22k
R19
150
R11
150
+5v
R10
2.2k
U2
74HC390
R18
3.3k
T2
CT-600CT
8
+5v
C36
.1uF
R30
100k
MT4
11
12
C26
.01uF FILM
23
R57
47
C42
.0015uF FILM
22
1
2
3
4
-12v
C38
470pF
-5v
8
SSB-AM/FM
21
R29
47
STEREO PHONES
20
C44
19
18
R59
10k
+5v
R65
100k
R75
10
17
R58
10k
U12A
TL082 SM
8
U12B
Tl082
R50
2.2k
3
R68
3.3k
1
R49
82k
R48
33k
2
7
16
C43
.001uF FILM
14
C25
.001uF FILM
C12
.1uF
C41
.01uF FILM
4
C60
.1uF
16 6
C61
.1uF FILM
3
6
C13
10uF TANT
15
13
U10C
74HC4053
8 7
8
5
4
2
4
6
7
5
5
C40
470pF
R31
10k
4
R69
22k
R25
470
8
U16B
Tl082
9
+5v
R43
47
+5v
LO3
471 2/3 KHz
U14A
Tl082
R85
47
1
4
2
R81
R77
1.5k
8
1
U18B
Tl082
R86
100
14
R73
47
5
FL1
LTU455D
2
7
6
TMP
C14
.1uF FILM
2
53
4
R87
100
C17
.1uF
1
8
R78
1.5k
C22
.1uF
6 16
-5v
C23
100pF
R72
10k
U13A
Tl082
C47
.1uF
12
13
IF OUT
455KHz
C51
470pF
-5v
U15A
74HC4053 11
2
C45
820pF
R70
3.3k
3
3.3k
1
R54
47
1
TMP
52
C39
.1uF
C24
.001uF FILM
R56
10k
R55
22k
R71
47
8
3
1
U13B
Tl082
R53
1k
R52
68k
R51
68k
8
5
2
7
6
78
U14B
Tl082
C46
470pF
4
6
4
C48
.01uF FILM
C49
47pF
1
4
+5v
7
3
5
8
R79
47
C15
.1uF
R42
47
R80
C50
.1uF
3.3k
R74
10k
C16
1uF TANT
-5v
-12v
A
B
C
D
E
F
G
RX-340
81790
A
B
U29
573
1
G OC 11
N C
D
J33
R25
R26
R27
R28
C53
C51
C47
J13
C52
4
3
2
1
12
13
14
15
16
17
18
19
R22
R23
R24
C50
OUTPUT1
OUTPUT2
OUTPUT3
OUTPUT4
R22-R28 = 100
C48
3
2
1
C49
ATTN
NORM
PREAMP
E
F
G
H
U28
14094
1
0
5
D
C
5
8
9
8
7
6
5
4
3
2
D8
Q8
D7
Q7
D6
Q6
D5
Q5
D4
Q4
D3
Q3
Q2 V
C D2
Q1 C D1
10
9
11
12
13
14
7
6
5
4
2
0
+5V
QS G
QS N
D
C54
0.01
Q8
Q7
Q6
Q5
15
Q4
OE
3
Q3
CLK
2
Q2 V
D
C
1
Q1 C STR
+5V
1
6
+5V
C47-C53 = 0.001
+5V
AD[0..7]
C28
0.01
4
D2
1N4148
J10
Aud Det
2
1
D1
1N4148
2
18p
Y1
35
34
C13
+5V
+5V
R14
10K
J15
U7
74HC4050
J67
TRX
SEL
2
1
8
15
12
10
6
4
2
470
R1
R2
470
J12
LO3_SOL
CLK
LO3_ENA
DAT
GND
Y5 A5
Y4 A4
Y3 A3
Y2 A2
Y1 A1
Y0 A0
4
3
2
1
49
47
48
PSEN
ALE
C11
0.01
SOL_REF
RF_SENSE
SOL_LO2
2
1
R15
10K
R11
220K
C14
0.1
18p
3
2
1
J11
MT2
60
61
59
58
3
14
11
9
7
5
3
1
VCC
DSP_IACK
R4 100
R3
n/i
+5V
C2
0.001
CLK
PRE_ENA
R10 100
3
2
1
DAT
1
68
67
66
65
64
63
62
7
8
9
10
11
12
13
14
+5V
J24
4
5
C10
0.01
15
+5V
C20
6
3.3
PWMO
PWM1
2
AVSS
AVDD
AVREF+
AVREFSTADC
P5.0/ADC0
P5.1/ADC1
P5.2/ADC2
P5.3/ADC3
P5.4/ADC4
P5.5/ADC5
P5.6/ADC6
P5.7/ADC7
39
40
41
42
43
44
45
46
A8/P2.0
A9/P2.1
A10/P2.2
A11/P2.3
A12/P2.4
A13/P2.5
A14/P2.6
A15/P2.7
P4.0/CMSR0
RXD/P3.0
P4.1/CMSR1
TXD/P3.1
P4.2/CMSR2 INT0/P3.2
P4.3/CMSR3 INT1/P3.3
P4.4/CMSR4
T0/P3.4
P4.5/CMSR5
T1/P3.5
P4.6/CMT0
WR/P3.6
P4.7/CMT1
RD/P3.7
RST
EW
8
15
12
10
6
4
2
R9
100
C4
0.001
J14
CLK
DAT
LO2_ENA
REF_ENA
GND
R5
100
R6,100
R7,100
R8
100
C6
C8
PSEN
C7
C5
GND
Y5 A5
Y4 A4
Y3 A3
Y2 A2
Y1 A1
Y0 A0
VCC
AUX_DATA
SCL
SDA
A8
A9
A10
A11
A12
A13
A14
A15
14
11
9
7
5
3
1
J81
6
5
4 SDA
3 SCL
2
1
+5V
U2
MAX242
C15
0.1
1
C16
0.1
14
11
9
7
5
3
1
2
3
4
C17
0.1
5
6
7
0.001
C9
0.01
C18
0.1
8
9
EN SHDN
C1+ VCC
V+
GND
C1-
T1O
C2+ R1I
C2V-
R1O
T1I
T2O T2I
R2I
R2O
PLD_TDI
PLD_TMS
PLD_TCK
JP1
HEADER 6
+5V
TDI
TMS
TCK
TDO
GND
1
2
3
4
5
6
7
8
123456789
2
3
4
5
6
7
8
9
14
RXD
S2
1
2
3
4
5
6
7
8
12
11
10
16
15
14
13
12
11
10
9
+5V
- LO3_ENA R/C FILTER OK?
3
2
1
B
C27
CS1
1
23
34
12
26
OE G
N NC 1
WE D NC
19
18
17
16
15
14
13
12
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
98400
3
2
A0 V
A1 C
C
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
O0
O1
O2
O3
O4
O5
O6
O7
13
14
15
17
18
19
20
21
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
RD
PB0
WR
PB1
A0
PB2
A1
PB3
I/O
RESET
PB4
CS
PB5
PB6
N.C.
PB7
N.C.
N.C.
PC0
N.C.
PC1
OUT PC2
PC3
PC4
PC5
G
PC6
N
PC7
D
4
5
4
3
2
44
43
42
41
DSPB0
DSPB1
DSPB2
DSPB3
DSPB4
DSPB5
DSPB6
DSPB7
20
21
22
24
25
26
27
28
DSPB8
DSPB9
DSPB10
DSPB11
DSPB12
DSPB13
DSPB14
DSPB15
16
17
18
19
15
14
13
11
DSP_IRD\ DSPB16
DSP_IWR\ DSPB17
DSP_IAL
8
DSP SUB-ASSEMBLY
DSPB19
3
DSPB[0..19]
DSP_IACK
+5V
DSP_RESET
DSP_IRQ2
C29
0.01
CE G
N VPP
OE D
1
6
1
PLD_TDO1
PLD_TDO2
PLD_TCK
PLD_TMS
RXD
+5V
TXD
DSP_IACK
DIG_IN_ENA
DSP_RESET
DSP_IS
DSPB18
DSP_IRQ2
PLD_TDI2
PLD_TDO2
PLD_TCK
PLD_TMS
RXD
2
AUX_ENA
AUX_DIR
AUX_DATA
AUX_CLK
TXD
C24
0.01
RXDSP.SCH
2
3
4
5
6
7
8
9
D1 V
D2 C
D3 C
D4
D5
D6
D7
D8
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
U6
573
19
18
17
16
15
14
13
12
+5V
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
C25
0.01
1
G
C
N
OC D
1
0
Programmed Eproms
Leave ground plane around edge of PCB
Remove mask over vias
A
6
40
10
9
39
7
PA0
PA1
PA2
PA3
I/O
PA4
PA5
PA6
PA7
573
0
11
1
-5V
RD\
WR\
A0
A1
V
C
C
U5
C G
N
OC D
2
0
123456789
SW DIP-8
+5V
D0
D1
D2
D3
D4
D5
D6
D7
U11
82C55APLCC
1
C
ORRRRRRRR
M1 2 3 4 5 6 7 8
0.01
13
D1 V Q1
D2 C
C Q2
Q3
D3
Q4
D4
Q5
D5
Q6
D6
Q7
D7
Q8
D8
+5V
C19
J19
+5v
-5v
gnd
11
1
U27
12
11
10
9
8
7
6
5
27
26
23
25
4
28
29
3
2
30
31
22
24
2
0
10K X 8
16
TXD
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
C
ORRRRRRRR
M1 2 3 4 5 6 7 8
SW DIP-8
38
37
36
35
33
32
31
30
0.01
U12
+5V
+5V
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
1
4
U26
10K X 8
16
15
14
13
12
11
10
9
11
12
13
15
16
17
18
19
+5V
CS1
S1
D0
D1
D2
D3
D4
D5
D6
D7
E
PLD_TDO1
AD0
PLD_TDO2
+5V
15
20
RD\ 22
WR\ 27
18
17
A0 V
A1 C
C
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
AT27C040
+5V
CHECK/CONFIRM WITH 330
AD7
AD6
AD5
AD4
AD3
AD2
AD1
3
7
ALERT
N/C
SDA
SCL
FP FLAG
GND
+5V
33
32
31
30
29
28
27
26
25
24
23
10
9
8
7
6
5
4
3
25
24
21
23
2
11111111222
23456789012
JTAG
+5V
1
1
2
3
4
WR\
5
RD\
6
DSP_RESET7
DSP_IRQ2 8
9
10
11
C21
0.01
U4
GGI I I I I I GVG
CC/ / / / / / T CT
KKOOOOOOSCS
21
1I 2
GCK3
GSR
I/O
I/O
I/O
I/O
GND
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
VCCIO
TDI
GND
TMS
TDO
TCK
I/O
V
I I I CI GI I I I I
/ / / C/ N/ / / / /
OOOI ODOOOOO
A15
A14
A13
654321
U9
74HC4050
8
15
12
10
6
4
2
44444333333
43210987654
V
S
S
J81 ON FP
GND
Y5 A5
Y4 A4
Y3 A3
Y2 A2
Y1 A1
Y0 A0
VCC
ALE
123
DSP_IS
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
2
9
2
8
+5V
+5V
V
S
S
U3
M48Z58SO
+5V
24 TTL_RXD
25 TTL_TXD
26
INT0\
27
28
29
30
WR\
31
RD\
MT6
5
4
3
2
1
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
U8
74HC4050
4
3
2
1
R13
4.7K
16
17
18
19
20
21
22
23
CT0I/P1.0
CT1I/P1.1
CT2I/P1.2
CT3I/P1.3
T2/P1.4
RT2/P1.5
SCL/P1.6
SDA/P1.7
3
6
J25
LO1_SOL=SYNTH_SOL
57
56
55
54
53
52
51
50
AD0/P0.0
AD1/P0.1
AD2/P0.2
AD3/P0.3
AD4/P0.4
AD5/P0.5
AD6/P0.6
AD7/P0.7
EA
PSEN
ALE
C3
0.001
LO1_SOL
CLK
DAT
LO1_ENA
V
D
D
XTAL1
XTAL2
+5V
EXAPNSION
J70
MT3
U1
C12
+5V
FUTURE
22.1184 MHZ
R12
1.5K
3
A[0..15]
DSPB[0..19]
C1
0.01
C
Main CPU U12 98400
DSP CPU U30 98402
D
E
F
G
RX-340
81807
A
B
S2
2AMP
C
E
D
F
G
H
12
R5
10
5
S1
J2
TMP
4AMP
C3
10/16
100
47K
R4
100
T1
C15
R58
R9
10K
R12
220
C9
.001uF
R7
10K
C23
.001uF
R22
100
Q2
C6
.01uF
U2
MC12019D
C16
R26 2.2K
U3
C7
0.1uF
Q5
T2
5
6
7
8
L1
.39uH
R13
330
R8
4.7K
MC145170
100
R23
R1
C24
.001
UF
OSCIN
VDD
OSCOUT
PHV
REF
PHR
FIN
PDOUT
DA IN
VSS
ENBLE
LD
CL
FV
DA OUT
FR
16
15
14
13
12
11
10
9
R25
C2
D11
10K
1/20
C11
47pF
R11
470
C20
.001
UF
R6
15K
2.2K
R16
4.7K
4
SINP
GND
3
SGND OUT
2
VCC
NC
1
NC CONINP
8
9
10
11
12
13
14
Q6
R14
2
220
C18
.01uF
C17
.001uF
R15
68K
3
C19
R63
1.0K
74HC74AD
R17
470
.001uF
C10
33pF
C8
27pF
7
NOTQ2
GND
6
Q2
NOTQ1
5
SET2
Q1
4
CLOCK2
SET1
3
DATA2
CLOCK1
2
RESET2
DATA1
1
VCC
RESET1
8
9
10
11
12
13
14
R57
47
.01uF
C21
1/20
R20
10
1
R18
47
CIN
NC
CIN
NC
OUT
NC
VEE
NC
OUT
BIAS
SIN
GADJ
GADJ
SIN
0.1uF
R56
220
R69
5.6K
R107
10
C53
470pF
U5A
TLO82
R73
10K
R77
8.2K
10K
C54
100pF
C27
10/16
R74
10K
C57
220pF
R75
8.2K
4
2
4
R76
6.8K
6
3
R28
33K
R34
3
C77
1/20
C75
.01uF
L2
.33uH
C33
.01uF
C76
10/16
C64
R87
9.1K
R53
47
R54
10
T8
R33
2.2K
C47
1/20
C46
0.1uF
T9
C35
33pF
R52
680
R85
8.2K
C36
47pF
12pF
R32
680
R51
100
Q13
SOT23
C41
0.1uF
R50
100
L5
.33uH
2
C42
0.1uF
C45
27pF
T5
3BAL
3
C43
0.1uF
Q12
3
R86
5.6K
R84
2.2K
8
R98
100
Q11
2
1
R92
10K
5
R95
680
8
100pF
560
Q8
R94
270
2AMP
R105
100K
R101
100
+5
D10
8
MMSD914T1
U8A
TLO82
3
R104
2.2K
1
-5
33
R90
100
1.0K
POT
R110
1
4
R89
10K
7
R111
1.2K
22K
D7
MMSD
914T1
C40
R112
680K
Q9
S6
1
2
2
D8
4
4
10/16
2
R91
100
Q15
Q14
C73
1/50
6
R44
100
R40
10K
R97
4
R100
C44
Q10
0.1uF
R39
1
2
R93
C70
TLO82
C32
33
33
C72
0.1uF
J7
TMP
C69
0.1uF
3
1/20
C71
0.1uF
U7B
R48
100
T11
1
R38
R37
100pF
33
2
C31
R36
100pF
33
C30
R35
100pF
C29
T7
2
+5
1
FL2
455FILT
R96
820
-5
R45
100
D4
D5
1
2
C A A GGA A C
1 1 1 AA2 2 2
L HL T T L HL
OI O1 2 OI O
R99
470k
100
2
3
3AMP
-5
R83
2.2K
47
3
C59
10/16
U7A
TLO82
R47
100
S4
3
C60
10/16
C63
2200pF
R49
100
1
1
2
3
C68
0.1uF
T10
R88
100
U6
AD600R
R46
D6
3
S3
C65
470pF
C37
1
J6
TMP
R80
10K
C67
2200pF
1.5uH
33pF
R79
10K
C79
0.1uF
12345678
C62
470pF
L4
C61
R81
1.0K POT
CA A V V A A C
1 1 1 P N2 2 2
H C OOE OC H
I MP S G P MI
1
3
R78
100
1/20
0.1uF100
820uH
Q7
R30
10
2
L6
.33uH
T3
C78
0.1uF
1111111
65432109
FL1
455FILT
7
8
C58
0.1uF
R82
C66
1/20
L3
R31
220
5
C56
.001uF
8
R71
10K
C55
100pF
10 1/2W
2
U5B
TLO82
1
C25
1/20
D3
4
R70
5.6K
R72
R27
1.0K
C34
.001uF
R62
1.0K
0.1uF
R19
10
D2
C28
R61
820
R59
1.2K
C52
0.1uF
C51
MMSD914T1
J1
TMP
C49
1/20
7
6
5
4
3
2
1
R60
1.2K
C22
1/20
R29
10
C26
1/20
R65
4.7K
U4
MC1496D
R55
2.2K
C48
R64
1.0K
D9
C14
.001uF
C1
.001uF
C50
1/20
U1
C13
1/20
Q1
4
R67
1.2K
47
Q4
100
R21
C74
10/16
R10
100
Q3
1
2
3
4
5
6
7
8
5
R68
10
.01uF
R24
330
1234
R2
R3
J5
TMP
C5
.47uFD
C4
100/35
6
1
2AMP
MMSD914T1
R108
7
5
R41
J3
TMP
100
R43
T4
100
3BAL
S5
J4
TMP
R103
10K
2
1
U8B
8
Q17
Q16
C38
1/20
R42
C39
1/20
R102
10K
2AMP
+5
R109
2.2K
47
A
B
47K
TLO82
C
D
E
F
G
RX-340
81817
A
VCC
VCC
B
E
D
C
F
H
G
1
Audio amp / Meter PWM area
L1
100uH
L4
100uH
Speaker Out/Return
2
Headphones In
J8
Audio In
J34
J93
Speaker
C34
J83
100uF/6.3V
5
MEMORY DISPLAY (BOTTOM)
HEADER14
J82
PARAMETER DISPLAY (TOP)
VCC
HEADER14
L2
100uH
C29
100uF/6.3V
14
13
12
11
10
9
8
7
6
5
4
3
2
1
J94
U7F
E2
15
14
U7D
P3.1
3
2
1
P3.1
9
4050
R/W
RS
6
7
P3.4
100uF/6.3V
4
RESET
DATA
SCLK
VCC
C106
.1uF
C102
1uF/50V
C109
470uF/16V
11
P3.0
Multiplexed
Address Bus
AD[0..7]
P3.0
C110
470uF/16V
E1
D3
4050
D2
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
D1
U8C
D0/DATA/DAT
D1
D2
D3
DRESET
10
SCLK
DRESETF
SCLKF
6
7
U8D
4050
9
4050
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
2
3
4
5
6
7
8
9
ALE 11
1
19
18
17
16
15
14
13
12
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
D1
D2
D3
D4
D5
D6
D7
D8
C121
.1uF
Demultiplexed
Address A0-A7
V
C
C 20
D1F
D2F
D3F
C108
.1uF
A0
A1
A2
A3
A4
A5
A6
A7
U11
C101
.1uF
10
U1
C111
.001uF
C105
.001uF
11
SN74HC573DW
4050
15
R114
4.7K
14
4050
U8B
VCC
4
R102
4.7K
J95
5
3
2
1
U9
2
8
4050
2
3
4050
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
U7A
2
3
U7B
4050
5
VCC
4050
VCC
C5
18pF
C1
.01uF
Y1
22.11MHz
A15 20
26
*RD 22
*WR 27
2
3
D0
35
34
C6
18pF
*EA
*PSEN
ALE
METER PWM
49
47
48
4
5
LED BLANKING
VCC
R15 R16 R17
10K 10K 10K
60
61
59
58
3
VCC
J85
KEYPAD ROW IN KR0
KR1
KR2
1
3
5
7
9
11
13
15
17
2
4
6
8
10
12
14
16
18
KEYPAD
CONNECTOR
GAIN POT IN
(KR3 is unused)
R26 1K
10
9
8
7
6
5
4
3
25
24
21
23
2
P5.0
P5.1
P5.2
P5.3
P5.4
1
68
67
66
65
64
63
62
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
7
8
9
10
11
12
13
14
C35
1uF/50V
23264
KEYPAD COL OUT
KS0
KS1
KS2
KS3
OENA
KCLK
P4.7
VCC
C31
15
4.7uF
6
XTAL1
XTAL2
EA
PSEN
ALE
V
D
D
AD0/P0.0
AD1/P0.1
AD2/P0.2
AD3/P0.3
AD4/P0.4
AD5/P0.5
U3
AD6/P0.6
80C552
AD7/P0.7
PWMO
PWM1
CT0I/P1.0
AVSS
AVDD
AVREF+
AVREFSTADC
CT1I/P1.1
CT2I/P1.2
CT3I/P1.3
T2/P1.4
RT2/P1.5
SCL/P1.6
SDA/P1.7
P5.0/ADC0
P5.1/ADC1
P5.2/ADC2
P5.3/ADC3
P5.4/ADC4
P5.5/ADC5
P5.6/ADC6
P5.7/ADC7
A8/P2.0
A9/P2.1
A10/P2.2
A11/P2.3
A12/P2.4
A13/P2.5
A14/P2.6
A15/P2.7
P4.0/CMSR0
P4.1/CMSR1
P4.2/CMSR2
P4.3/CMSR3
P4.4/CMSR4
P4.5/CMSR5
P4.6/CMT0
P4.7/CMT1
RST
V
S
S
EW
2
RXD/P3.0
TXD/P3.1
INT0/P3.2
INT1/P3.3
T0/P3.4
T1/P3.5
WR/P3.6
RD/P3.7
57
56
55
54
53
52
51
50
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
16
17
18
19
20
21
22
23
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
39
40
41
42
43
44
45
46
A8
A9
A10
A11
A12
A13
A14
A15
24
25
26
27
28
29
30
31
P3.0
P3.1
*INT0
P3.3
P3.4
4
5
6
VCC
JMP1
2
1
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
10
9
8
7
6
5
4
3
25
24
21
23
2
26
27
*PSEN
20
22
1
A15/VPP
Q200
2N3904
VCC
.01uF
METER PWM
C2
1
V
A0
C
A1
C
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
DIGITAL AUDIO
11
12
13
15
16
17
18
19
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
CE
OE G
N
VPP D
2
A15
10
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
G OC
N
C
D
12
13
14
15
16
17
18
19
VCC
U5
20
74HC00
*(A15 * *(*RD) )
1
ENC0
ENC1
ENC2
ENC3
ENC4
ENC5
ENC6
ENC7
U6D
14077
U6A
14077
3
13
7
U2A
14077
9
2
1
2
R9
10K
VCC
ENC0
1
ENC1
1
2
3
4
5
1
4
PH1
VCC
PH0
N.C.
GND
MAIN
1
4
1
J89
U2B
14077
4
6
ENC2
5
ENC3
6
ENC4
5
ENC5
1
2
3
4
5
GND
PH1
VCC
PH0
GND
PARAMETER
C7
100uF/6.3V
GND
U6B
U10C
C3
.01uF
J88
2
3
VCC
2
ENCODERS
R28
10K
7
10
1
C20
.01uF
VCC
R27
10K
8
11
1
74HC00
SN74HC573DW
100uH
C37
.01uF
3
9
8
7
6
5
4
3
2
U2C
14077
GND
GND
+5 REG
+5 REG
+12 NC
*RD
2
4
U10B
C8
2 .01uF
VCC
C36
.01uF
6
1
R25
4.7K
C4
.01uF
U10A
5
1
11
D8
Q8
Q7
D7
Q6
D6
D5
Q5
D4
Q4
D3
Q3
Q2 V D2
C
Q1 C D1
VCC
R24
4.7K
VCC
R201
1K
2
O0
O1
O2
O3
O4
O5
O6
O7
VCC
VCC
Q201
PZT2222
R200
47K
A[0..15]
ADDRESSS
$8000
ENCODER
L3
VCC
3
ADDRESS $0000-$7FFF
ROM SPACE
12
1
+12V
4
3
2
1
MT4
J80
+12V
Meter and Lamp Out
14
R202
10K
*WR
*RD
VCC
1
2
3
4
5
Meter In
MT2
J97
VCC
28
3
7
ALERT
UNREG
SDA
SCL
FP FLAG
GND
J72
1
2
CS1
CS2
OE
WE
U4
JMP1: EPROM SELECT
-----------------OPEN 27C256
JUMPERED 27C512/27C010
J81
1
Speaker Gain
1K POT
MT3
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AT27C256
REMOTE
2
3
D0
D1
D2
D3
D4
D5
D6
D7
R104
470
11
12
13
15
16
17
18
19
ADDRESS $0000-$7FFF
RAM SPACE
V
S
S
3
6
A0
V
C
A1
C
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
HY6264/L
ENC[0..7]
U8A
4
4
R103
4.7
TDA1013B
G
C
N
OC D
U8E
12
U8F
2 3
P3.4
U7E
12
1
R101
220K
VCC
R/W
E
2
P3.3
4050
D0F
6
5
4
3
2
1
1
+12V
P3.3
D0
J84
GND
12
U7C
VCCFM
C30
1234
4050
RS 10
14
13
12
11
10
9
8
7
6
5
4
3
2
1
5
J96
MT3
Out to Headphones Pot
U6C
14077
U10D
10
8
11
9
9
12
J90
14077
13
10
1
2
3
4
5
4
8
GND
PH1
VCC
PH0
GND
MEMORY
74HC00
74HC00
U2D
14077
Unused gates
ENC6
13
11
12
A
B
C
D
E
ENC7
F
G
RX-340
81819
B
A
E
D
C
F
G
H
ROWS
Scan in
Single lines
(To CPU)
KR0
KR1
KR2
S101
1
2
S102
1
2
9
S103
1
2
6
S104
1
2
3
C
S105
S107
S106
1
2
1
2
S108
1
2
1
2
UP/+
S109
1
2
3
4
DN/-
3
S110
S111
1
2
3
1
2
4
1
2
4
4
NB
NR
AGC
S114 3
1
2
3
1
2
4
SCRATCH
STEP>
BW
S113
S112
3
S115 3
1
2
4
4
MSCAN
PAUSE
SCROLL
5
SETUP
5
S202
S201
1
2
1
2
8
S203
1
2
5
S204
1
2
2
0
S205
S207
S206
1
2
1
2
MODE>
MHz
S208
1
2
1
2
S209 3
1
3
2
4
STEP<
4
BFO
S303
S302
S301
1
2
1
2
7
1
2
4
S304
1
2
1
--
S305
.
S307 3
1
2
S306
1
2
1
2
KHz
S309
3
1
2
4
S310
S311
3
S312
1
2
S215
1
2
S314
1
2
4
4
REMOTE
3
S315
1
2
1
2
4
LOCKOUT
RECALL
3
4
PSCAN
S313
1
2
SPKR
S214 3
1
2
4
TUNE
AUTONOTCH
SQL
PBT
3
1
2
STORE
DUMP
1
2
4
LOCK
S213
S212
1
2
NOTCH
S308 3
1
2
4
MODE<
S210
1
2
GAIN
PAUSE/PS
4
4
1111111
1234567890134567
0123456789111111
012345
GG
12
A B CD
2222
3210
COLUMNS
Scan out, encoded
(From CPU)
U1
SN74HC154DW
11
89
VCC
C1
.1uF
KS0
KS1
KS2
KS3
150
R401
10K POT
30267
PREAMP
2
R306
470
D26
D25
470
R305
NORM
D24
ATTN
470
R304
R303
470
SEL
EXTREF
D22
D23
D21
TXD
USB
2
1
R
E
M
O
T
E
PINS
1
2
3
J67
R209
470
N
R
D18
150
M
S
C
A
N
150
R210
D19
150
S
E
T
U
P
LSB
D17
150
R206
R205
150
R203
R204
150
P
A
U
S
E
BOTH
A
U
T
O
N
O
T
C
H
150
150
N
B
P
S
C
A
N
470
S
Q
L
P
A
U
S
E
R208
VCC
VCC
GND
DATA
KCLK
OENA
VCC
GAIN POT
GND
2
4
6
8
10
12
14
16
18
M
S
C
A
N
R207
470
1
3
5
7
9
11
13
15
17
R202
R201
J85
T
U
N
E
R110
150
VCC
R109
N
O
T
C
H
10uF/25V
N/C
KR2
KR1
KR0
KS3
KS2
KS1
KS0
LED DIM PWM
150
150
A
G
C
C3
2
P
B
T
R108
VCC
S
C
R
O
L
L
R107
150
B
F
O
R106
B
W
R105
150
L
O
C
K
R104
150
R103
R102
150
R101
3
150
3
MT2
HEADER 3
U4
U2
UCQ5810LWF
111
11
2109832187
VCC
1
UCQ5810LWF
1
6
111
11
2109832187
QQQQQQQQQQ
1234567891
0
S
E
R
QQQQQQQQQQ
1234567891
0
B
L
D
A
I
E N
N N K
G
N
D
D
I
N
1
6
S
E
R
111
11
2109832187
U3
UCQ5810LWF
VCC
C2
.1uF
1
4
7
1
3
C
L
K
4
L
O
A
D
+
1
5
V
C
C
6
5
1
4
B
L
A
E N
NK
7
1
3
C
L
K
4
L
O
A
D
+
1
5
V
C
C
G
N
D
6
1
6
QQQQQQQQQQ
1234567891
0
S
E
R
B
L
D
A
I
E N
N N K
G
N
D
1
VCC
C4
C5
.1uF
.1uF
1
4
5
7
1
3
C
L
K
4
L
O
A
D
+
1
5
V
C
C
6
5
LED DIM PWM
VCC
VCC
VCC
DATA
CLK
OENA
A
B
C
D
E
F
G
RX-340
81820
A
C
B
D
1
L1
.33uH
5
C2
H
G
2
5
R37
3.3
C21
0.1uF
L4
.18uH
F
L2
4.7uH
R15
10, 3/4W
.01uF
E
S1
2AMP
C22
470uF
R4 2.2K
C23
0.1uF
L16
4.7uH
R2
220
C1
T1
3BAL
J1
TMP
L5
.68uH
R3 10
C7
33pF
Q1
2SC1971
.001uF
R1
560
C38
C39
10/16
0.1uF
Q10
C8
18pF
C44
47pF
4
L11
4.7uH
C9
33pF
L6
.18uH
R36
47
R35
560
T2
3BAL
4
Q9
C41
.01uF
R16
100
T8
2BAL
C37
.01uF
Q7
R34
3.3K
C10
2.2pF
R5
1k POT
R33
3.3K
C11
1-6pF
R17
100
C29
.01uF
Q8
C40
R6
R7
10
10
R23
100
R31
3.3
Q6
C46
27pF
3
1
2
2
D2
D1
3
D3
C31
0.1uF
R18
100
C28
.01uF
1
C43
0.1uF
D4
T5
3BAL
3
3
R24
100
3
.001uF
R32
3.3
C42
0.1uF
L14
L15
R30
680
.22uH
.15uH
Q5
J4
TMP
3
T6
3BAL
2
1
1
2
3
T4
2BAL
C17
56pF
2
C18
33pF
C19
18pF
R9
33
C4
.01uF
R10
33
C6
.01uF
.01uF
R11
33
R25
100
C5
L10
.22uH
C16
68pF
L9
.27uH
L8
.33uH
C14
180pF
C13
180pF
C15
150pF
2
R28
22
Q3
C45
27pF
R21
100
C25
.01uF
R12
330
100pF
2
R20
100
R26
100
R14
15
C12
120pF
T7
DCOUP
Q4
C26
.01uF
C20
4.7pF
L7
.33uH
C36
68pF
C30
.001uF
T3
3BAL
J2
TMP
1
R29
1.5K
2
R8
33
6
C35
R19
100
C27
.01uF
C3
.01uF
4
3BAL
L12
1
R13
330
R27
100
45MONOP
FL1
2
45MONOP
FL2
1
L13
2
C32
15pF
Q2
C34
22pF
C33
6.8pF
R22
100
C24
.01uF
C47
1pF
1
1
J3
TMP
A
B
C
D
E
F
G
RX-340
81823
C
B
A
D
F
E
G
H
C6
5.6pF
J1
C1
0.1uF
TMP
D1
S2
L7
1.0uH
C9
C8
C7
10pF 220pF 56pF
1
0987654321
1
R1
100
R14
47
C15
C16
120pF 180pF
C18
12pF
L14
1.0uH
C19
180pF
D4
1.0uH
L11
.82uH
C17
220pF
C21
220pF
L12
.82uH
C24
1/20
L17
6.8uH
C27
270pF
C26
270pF
C29
27pF
L18
1.5uH
C32
L19
C28
270pF
C30
270pF
L21
1.2uH
C31
270pF
C104
0.1uF
R49
100
21
0.1uF
L24
15uH
C38
470pF
R47
100
C34
.01uF
L28
2.7uH
C41
C40
33pF 470pF
R68
1.0K
D8
C109
C110
0.1uF
1/20
C42
270pF
2.7uH
C37
270pF
L25
2.2uH
C39
470pF
C43
470pF
L26
2.2uH
R38
33K
T4
L27
100uHS
T1
3
R5
47
C47
1/20
L30
3.3uH
L31
27uH
C49
560pF
D9
C51
39pF
L35
3.3uH
C52
560pF
L33
L32
3.9uH 3.9uH
C50
680pF
C54
680pF
L34
100uHS
C60
.001uF
L38
39uH
L39
5.6uH
C61
.0012uF
L42
4.7uH
C62
C63
82pF .001uF
C59
100uHS
2
L40
5.6uH
C65
.0012uF
L44
12uH
68uH
L45
C73
C72
150pF
C77
0.1uF
C80
1/20
L50
4.7uH
0.1uF
L41
100uHS
C117
1/20
D20
C116
0.1uF
R45
100
Q9
Q10
D13
L51
4.7uH
C82
.0039uF
C79
1/20
R27
C91
0.1uF
R26
4.7K
33K
R28
C78
0.1uF
L48
4.7K
820uH
D17
C98
1/20
D18
R19
33
C85
0.1uF
C86
1/20
R30
82
C89
0.1uF
C90
1/20
R22
4.7K
R23
33K
R61
4.7K
C120
0.1uF
R24
4.7K
R25
4.7K
1
Q2
1/20
C94
0.1uF
1/20
L58
1mH
C87
0.1uF
R36
470
R72
1.0K
D
R62
4.7K
Q1
R33
22K
C127
R15
220
3AMP
0.1uF
C131
L55
1mH
1
2
3
Q4
R21
22K
R35
L53
1mH
S1
R29
4.7K
C88
R20
22
R71
1.0K
D16
C83
.0039uF
R18
33
L57
1mH
C97
0.1uF
L52
4.7uH
C
C92
0.1uF
C93
1/20
R12
100
L47
27uH
2
R46
100
Q3
12uH
C129
680pF
R11
47
L46
100uH
22K
R31
150
1mH
R32
22K
R34
R73
1.0K
R17
100
B
D21
D19
470
A
R43
100
L49
C75
C76
.0012uF
C130
120pF
1
R16
150
1/20
L60
1.2uH
2BAL
R60
22K
C102
C84
.0018uF
C81
.0018uF
C108
3
5
3 3TBAL
Q8
L56
.001uF
C128
680pF
820uH
L54
1mH
C119
1/20
D12
C67
0.1uF
C74
150pF .0012uF
C70
.001uF
D15
C101
0.1uF
C112
1/20
R75
220
2
R10
100
C68
1/20
C71
.0012uF
R52
220
C105
0.1uF
C64
.001uF
C69
1/20
C66
0.1uF
L43
R51
10
R57
1.0K
T3
R59
22K
R70
1.0K
R9
47
D14
0.1uF
D22
L37
4.7uH
C56
0.1uF
C57
1/20
R7
47
C58
1/20
.001uF
L36
R41
100
1/20
C55
0.1uF
D11
C111
R53
1.0K
C107
R8
100
100
4
C113
0.1uF
D10
C106
0.1uF
R40
Q13
2BAL
J2
TMP
T5
1
C100
0.1uF
R56
R69
1.0K
R58
4.7
L59
1.2uH
Q7
220
R54
3.3K
R55
220
C53
560pF
C48
560pF
L29
100uHS
C45
.01uF
C46
1/20
R39
100
Q11
Q6
R37
4.7K
R6
100
C44
.01uF
C99
0.1uF
Q5
C115
1/20
C114
0.1uF
100
C35
1/20
4
C103
S4
2AMP
L20
100uHS
270pF
Q12
D6
R4
100
1/20
D7
3AMP
1.5uH
C36
L23
R76
4.7K
R67
C23
1.0K
.01uF
R3
47
C33
.01uF
C124
0.1uF
R48
D5
L22
100uHS
C125
470/16
R42
L16
1.2uH
S3
1
2
3
1111111112
1234567890
R2
100
C25
1/20
C22
.01uF
L15
100uHS
L61
1MH .5A
L13
100uHS
R13
47
4
.01uF
2.2K
C20
120pF
L9
L8
100uHS
R66
1.0K
R74
D23
100
D3
L10
5.6uH
C12
.01uF
5
C126
S
E
S
R
EL
O
RDDU
OOOB
ATO
UUUL DV
U
N T T T N A B O1 T
C3 2 1 K T B U0 9
R50
C13
1/20
C14
1/20
U1
3AMP
C121
.001uF
100
C11
.01uF
C122
.001uF
C123
.001uF
100
.39uH .39uH
C2
1/20
L6
100uHS
C10
180pF
R65
100
100
N OOS L GC OOO
C U U T GN L U U U
T T R C D OT T T
4 5 O
C6 7 8
BV
K
ED
D
R44
2
L4
C5
180pF
L1
100uHS
L5
1
2
3
R64
D2
0.1uF
SP1
L3
2.7uH
C3
C4
56pF 220pF
C118
5
R63
100
L2
1.0uH
E
F
G
RX-340
81878
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