Spectra Engineering MX800 - Circuit Diagram: MX800 PA CIRCUIT DIAGRAM; PA Circuit Diagram Details (continued)

1 2 3 4 5 6 7 8
A B C D
8
7654321
D
C B A
C-BUS INTERFACE AND CONTROL LOGIC
9 TRADE ROAD
MALAGA 6062
WESTERN AUSTRALIA
PHONE +618-92482755
CLOCK OSC. AND
DIVIDERS
CTCSS/DCS/SELCALL RX
3
2
1
JMP30
1
2
3
JMP29
D14
BAV70
TP3
+5
R158
10K
R157
10K
R162
10K
+5
R154
10K
+5
ETH
C87
.47F
R175
47R
CLKOUT
1
INT
3
VSS
13
SDA
15
SCL
16
VBAT
14
VCC
2
IC29
DS3231
ETH
+5
ETH
JMP21 CNVSS
R138
10K
C74
100n
R122
1K
R123
10K
C68
1nf
ETH ETH
ETH
TR11
BC847
+5 +5
R15
4K7
R14
4K7
ETH
C25
100p
C26
100p
ETH
R17
220R
R16
220R
ETH
ETH
+12
R11
2K7
R10
1K
ETH
R12
10K
13
2
IC24
MC51943BML
ETH
GND1
C19
100n
+5
GND1
GND1
C21
100n
C20
100n
C24
100n
+5
GND1
C23
100n
C22
100n
R1 IN
13
R2 IN
8
T1 IN
11
T2 IN
10
C1+
1
C1-
3
GND
15
V+
2
V-
6
VCC
16
R1 OUT
12
R2 OUT
9
T1 OUT
14
T2 OUT
7
C2+
4
C2-
5
IC23
ST232
GND1+5
+5
D7D6
GND1
+5
+5
ETH ETH
C16
22p
C15
22p
X2 16.0MHz
D1
2
D2
3
D3
4
D4
5
D5
6
D6
7
D7
8
D8
9
Q1
18
Q2
17
Q3
16
Q4
15
Q5
14
Q6
13
Q7
12
Q8
11
E1
1
E2
19
IC21
74HC541
+5
D10
C17
1u
+5
GND1
R28
470R
R13
100K
R24
470R
R25
470R
R27
470R
D9
X3 4.032MHz
C10
22p
C9 22p
ETH
ETH
R9 1M
+5
GND1
C13
100n
C11
100n
ETH
C12
100n
ETH
C14
100n
GND1
P9/6
1
P9/5
2
DA1
3
DA0
4
P9/2
5
P9/1
6
P9/0
7
BYTE
8
CNVSS
9
P8/7
10
RESET
12
P8/6
11
XOUT
13
VSS
14
XIN
15
VCC
16
P8/5
17
P8/4
18
P8/3
19
P8/2
20
P8/1
21
P8/0
22
P7/7
23
P7/6
24
P7/5
25
P7/4
26
P7/3
27
P7/2
28
P7/1
29
P7/0
30
TXD1
31
RXD1
32
P6/5
33
P6/4
34
TXD0
35
RXD0
36
P6/1
37
P6/0
38
P5/7
39
P5/6
40
P5/5
41
P5/4
42
P5/3
43
P5/3
44
P5/1
45
P5/0
46
P4/7
47
P4/6
48
P4/5
49
P4/4
50
P4/3
51
P4/2
52
P4/1
53
P4/0
54
P3/7
55
P3/6
56
P3/5
57
P3/4
58
P3/3
59
P3/2
60
P3/1
61
VCC
62
P3/0
63
VSS
64
P2/7
65
P2/6
66
P2/5
67
P2/4
68
P2/3
69
P2/2
70
P2/1
71
P2/0
72
INT5
73
INT4
74
INT3
75
P1/4
76
P1/3
77
P1/2
78
P1/1
79
P1/0
80
P0/7
81
P0/6
82
P0/5
83
P0/4
84
P0/3
85
P0/2
86
P0/1
87
P0/0
88
AN7
89
AN6
90
AN5
91
AN4
92
AN3
93
AN2
94
AN1
95
AVSS
96
AN0
97
VREF
98
AVCC
99
P9/7
100
IC19
M30620FCAP
R26
470R
D8
IN+
1
IN-
2
GS
3
VREF
4
INH
5
PWDN
6
OSC1
7
OSC2
8
VSS
9
TOE
10
Q1
11
Q2
12
Q3
13
Q4
14
STD
15
EST
16
ST
17
VDD
18
IC22
MT8870
R21
100K
R22
100K
C29
100n
X1 3.57954MHz R20
390K
C28
100n
+5+5C27
100n
ETH
ETH
C18
100n
SCL
6
VDD
8
SDA
5
1
3
4
2
7
IC25
24LC128
ETH
R23
470R
D5
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
DIP2
SW-DIP8
ETH
SW1
R5 10K R6 10K R7 10K R8 10K
R4 10K R3 10K R2 10K R1 10K
C3 1n C2 1n C4 1n
ETH
C1 1n
C5 1n C8 1n C7 1n C6 1n
ETH ETH ETH ETHETH
ETH ETH
R38
10K
R37
10K
R36
10K
R35
10K
TR7 BC847
TR6 BC847
TR5 BC847
TR3 BC847
ETH
ETH
ETH
ETH
R42
1K
R41
1K
R40
1K
R39
1K
C48
2n2
R73
18K
R72
10K
1
2
3
JMP1
A0
1
A1
2
A3
3
VSS
8
INT
13
SCL
14
SDA
15
VDD
16
P7
12
P6
11
P5
10
P4
9
P3
7
P2
6
P1
5
P0
4
IC30
PCF8574
A0
1
A1
2
A3
3
VSS
8
SCL
14
SDA
15
VDD
16
P7
12
P6
11
P5
10
P4
9
P3
7
P2
6
P1
5
P0
4
IC28
PCF8574
1 2 3 4 5 6 7 8 9
10
SKU/B
IDC10
ETH
R168
1K
R171
10K
TR16
BC847
ETH
R170
1K
R172
10K
TR14
BC847
ETH
R169
1K
R174
10K
TR15
BC847
ETH
R159
1K
TR17
BC847
ETH
R173
10K
C92
100nF
ETH
C93
100nF
SKU-5
SKU-3
3 2 1
CLKOUT
PTT3
IOINT
RTCINT
IOINT
RTCINT
J
SDA (INT)
SCL (INT)
SCL (INT)
SDA (INT)
SCL
SDA
FX828 ENC
21
ALARM 1 EXT
WB/NB
SE
RX DATA
TX DATA
AGC_EN
SW1
SW1
BPF_OUT
TX_AUDIO_SW E2_INPUT
E1_INPUT
BPF_NOUT
RX_AUDIO_SW M2_OUTPUT
M1_OUTPUT
TX CTCSS DIS
RX CTCSS DIS
PWR BIT-1
PWR BIT-0
TTR_ENABLE
NOISE
A-D VOX
PTT
TX NOTCH CLOCK
TX BPF CLOCK
RX NOTCH CLOCK
RX LPF CLOCK
SKY-18
SKY-19
SKY-20
SKY-21SKY-22
SKY-23
SKY-24
SKY-25
IC20
DTMF Q4
DTMF Q3
DTMF Q2
DTMF Q1
FX828 CSN
FX828 REPLY DATA
FX828 CMD DATA
FX828 CLK
FX828 IRQ
FX828
E2/2 3
ENCODER/DECODER
MS GJ
LOGIC CCT DIAGRAM
(C) Copyright
ENGINEERING SPECTRA
APP
APPROVED
CHECKED
DRAWN
DESIGNED
DATEBY
PCB
REF
REVSHEETDRAWING No
TITLE
REVISIONDATE
CS037-2J 2 OF 2
LINE INTERFACE
M2/6M1/5
GREEN GREEN
7 3 4 5 6
1 2
24
1210 11
13
4
DISC
GREEN GREEN RED
PROCESSOR
E1/1
ORANGE
RSSI
CHAN SEL BIT-0
CHAN SEL BIT-1
CHAN SEL BIT-2
CHAN SEL BIT-3
14 15
MX800 OPTION
RX MUTE
ALARM 1 INT
17
FX828 TONE
FX828 DEC
DISC
SCL (INT)
SDA (INT)
DISC IN
DA1
DA0/TX DELAY OUT
TXD_ON_MB
RXD_ON_MB
RXD_ON_MB
TXD_ON_MB
TO SKI ON MB
CHAN_SEL_BIT-7
CHAN_SEL_BIT-6
CHAN_SEL_BIT-5
CHAN_SEL_BIT-4
(23)
(21)
(25)
(89)
(21)
(23)
(25)
(89)
TRM
TX DELAY IN
SKX-12