Kenwood TK-80, Service Manual

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