Kenwood TK-80 Service Manual page 24

Pin No. Pin Name Port Name I/O
4 A1
5 A0
6 NC
7 FEN4
8 FEN3
9 FEN2
10 FEN1
11 VEN1
12 LEN1
13 DEN2
14 DEN1
15 PLS
16 PEN1
17 NC
18 VB3
19 VB2
20 VB1
21 TSO
22 TTO
23 Vcc
24~31 D7~D0
32 RES
33,34 NC
35 WR
36 PR22
37 PR21
38 PR12
39 PR11
40 APRE
41 ATA
42,43 NC
44 RD
I/O Port Expansion: UPD6345GS (TX-RX unit IC10)
Pin No. Pin Name Port Name
5 B4
6 B3
7 B2
8 B1
9 B8
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SEMICONDUCTOR DATA
A1 I Port address 1
A0 I Port address 0
P27 - Not used
P26 O Serial parallel enable, final unit IC4
P25 O Serial parallel enable, TX-RX unit IC16
P24 O Serial parallel enable, TX-RX unit IC15
P20 O Serial parallel enable, TX-RX unit IC10
P21 O D/A enable, TX-RX unit IC13
P22 O LCD driver enable, LCD ASSY IC1
P23 O DDS enable, TX-RX unit IC501
P10 O DDS enable, TX-RX unit IC500
P11 O FSK key select. H: FSK key, L: Selective call key
P12 O PLL enable, TX-RX unit IC502
NC - Not used
P13 O VCO select. H: 21.5MHz≤f, L: Other
P14 O VCO select. H: 10.5MHz≤f<21.5MHz, L: Other
P15 O VCO select. H: f<10.5MHz, L: Other
P16 O External AT control output
P17 O External AT control output
Vcc I Power supply
D7~D0 I Data 7~0
RESET I Reset input
NC - Not used
WR I Write control input
P07 O Motor 2 rotation direction control
P06 O Motor 2 rotation direction control
P05 O Motor 1 rotation direction control
P04 O Motor 1 rotation direction control
P03 O Internal AT setting. H: Microprocessor, L: Analog circuit
P02 O Internal AT setting. H: Line input, L: Cut away
P01,P00 O Not used
RD I Readout control input
O8 RX band select 4. ON: 4.5MHz≤f<8.0MHz, OFF: Other
O7 RX band select 3. ON: 2.5MHz≤f<4.5MHz, OFF: Other
O6 RX band select 2. ON: 1.605MHz≤f<2.5MHz, OFF: Other
O5 RX band select 1. ON: f<1.605MHz, OFF: Other
O4 RX band select 8. ON: 21.5MHz≤f, OFF: Other
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Description
Description
TK-80
23