Spectra Engineering MX800 - Circuit Diagram: MX800 CONTROLLER BOARD DIGITAL SECTION; Digital Section Details (continued)

1 2 3 4 5 6 7 8
A B C D
8
7654321
D
C B A
OC
1
CLK
11
1D
2
2D
3
3D
4
4D
5
5D
6
6D
7
7D
8
8D
9
1Q
19
2Q
18
3Q
17
4Q
16
5Q
15
6Q
14
7Q
13
8Q
12
GND
10
VCC
20
IC7
74HC574
OC
1
CLK
11
1D
2
2D
3
3D
4
4D
5
5D
6
6D
7
7D
8
8D
9
1Q
19
2Q
18
3Q
17
4Q
16
5Q
15
6Q
14
7Q
13
8Q
12
GND
10
VCC
20
IC18
74HC574
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
VCC
20
GND
10
IC14
74HC541
ETH
ETH
/CHAN_SEL /RD
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
DIP1
SW DIP-8
ETH
C34
100n
+5
/WR
/STATUS
LED6
RED, ALARM
LED5
AMBER, AUX
LED4
GRN, CTCSS
LED3
RED, TX
R11
470R
R10
470R
R9 470R
R8 470R
+5
+5
ETH
ETH
C21
100nF
/OP_CNTRL1
/WR
ETH
ETH
+5
C6 100n
PA/PTT
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
VCC
20
GND
10
IC13
74HC541
+5
ETH
/IP_CNTRL
/RD
SIMPLEX_ON
PTT_DEL
8
9
10
IC8C
74HC32
11
12 13
IC8D
74HC32
ETH
RX_LD
TX_LD
RXEN
OC
1
CLK
11
1D
2
2D
3
3D
4
4D
5
5D
6
6D
7
7D
8
8D
9
1Q
19
2Q
18
3Q
17
4Q
16
5Q
15
6Q
14
7Q
13
8Q
12
GND
10
VCC
20
IC12
74HC574
/OP_CNTRL2
/WR
ETH
+5
+5
ETH
ETH
/RX_STRB
/TX_STRB
DE_CHAN_SEL4
FAN
SKD-10
SKD-11
SKC-11
/CS_CTCSS
LED1
GRN, PWR
LED2
AMBER, RX
R6 470R
R7 470R
+5
MODEM_SEL
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
+5
ETH
VCO/PTT
TX_MOD_ON
TRM
FSK_CNTRL
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2OUT
7
R2IN
8
R2OUT
9
T2IN
10
T1IN
11
R1OUT
12
R1IN
13
T1OUT
14
VSS
15
VCC
16
IC22
ADM202EARN
C23
100n
C26
100n
C24
100n
C25
100n
+5
ETH
+5
ETH
ETH
RXD
TXD
XTAL/OP
1
XTAL/CLK
2
ADR_SEL
3
/IRQ
4
SCLK
5
CMND_DAT
6
/CS
7
REPLY_DAT
8
TXSAUDOUT
9
AUDIN
10
AUDOUT
11
VSS
12
RXAMP(-)
13
RXAMP(+)
14
RXAOUT
15
RXSAUDIN
16
RXSAUDOUT
17
VBIAS
18
COMPIN(-)
19
COMPIN(+)
20
COMPOUT
21
NTTM
22
/WAKE
23
VDD
24
IC25
FX805
/CS_CTSS
CT_DAT_OUT
CT_CLK
CT_CMND_DAT
ETH
R69
10K
+5
/INT1
ETH
XTAL2
4MHZ
C56
18p
C55
27p
R71
1M
ETH ETH
ETH
+5
C57
100n
+5
R76
150K
R75
150K
R74
10K
R72
270K
SUB
R73
82K
ETH
VBIAS
VBIAS
C58
100n
ETH
R70
10K
CTCSS
SKD-8
SKD-17
SKC-17
SKC-7
MUTE_OFF
R98
10K
TR7
BC847
ETH
SKH-5
ALARM
R18
10K
TR3
BC847
ETH
SKB-2
PTT OUT
9
8
7
6
5
4
3
2
1
SIP1
10K
+5
1
2
3
4
5
6
12
11
10
9
8
7
DIP2
SW DIP-6
7 6 5 4 3 2
1
SIP2
10K
TX_TIMER_ON
REPEATER_ON
TX_VCO_CONT
TX_FSK
R188 10K
R189 10K
ETH
+
C59
10u
C53
10n
ETH
1
2
3
D5 BAV99
3 1
2
JMP11
31
2
JMP10
SKI-3 SKI-5
ETH
SKI-9
+5
R20
10K
SKC-16SKD-16
SKC-10
D10
BAV70
R229 4K7
R230 150K
R231 150K
NOTES:
1. REMOVE R229 IF MORE THAN 4 UNITS ON AN RS232 BUSS
SKK-15
SKC-20
31
2
JMP24
NORM,MASTER,SLAVE
4. = N.C.
C10
1u
C60
1u
TR2
FMMT491
ETH
D2 BAV70
+12
R14
470R
COAX_REL
SKJ-2
SKJ-1
ETH
NOTES
1. SKB = PA
2. SKC=EXCITER
3. SKD=RECEIVER
* REV P ONWARDS
9 TRADE ROAD MALAGA 6062
WESTERN AUSTRALIA
PHONE +618-92482755
GJ PG
MX800 CONTROLLER
JCS001-4J
DATE REVISION TITLE
DRAWING No SHEET
PCB
BY DATE
DESIGNED
DRAWN
CHECKED
APPROVED
APP
SPECTRA ENGINEERING
(C) Copyright
SECTION
GJ GP
BOARD DIGITAL
4 OF 6
IC8A
74HC32
1 2
3
7 14