Kenwood TK-390, Service Manual

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25
TK-390
SEMICONDUCTOR DATA
1. Microprocessor : 784214GC0648EU (TX-RX Unit IC406)
1-1. Terminal function
Pin No. Port name I/O Function
1 P120/RTP0 O Modem FCLR
2 P121/RTP1 O SB control
3 P122/RTP2 O D/A converter CS
4 P123/RTP3 O Modem MSKE (MSK enable)
5 P124/RTP4 O Modem DIN (DATA/TX DATA)
6 P125/RTP5 I Model select 1
7 P126/RTP6 I Model select 2
8 P127/RTP7 O Clock shift
9 VDD – +5V
10 X2 – X‘tal (12.0MHz)
11 X1 –
12 VSS – GND
13 XT2 – Open
14 XT1 – GND
15 RESET – CPU reset
16 P00/INTP0 I
µ
-com stop
17 P01/INTP1 I Modem TRD (TX clock)
18 P02/INTP2/NMI I Modem RTM (RX clock)
19 P03/INTP3 I DTMF decode STD
20 P04/INTP4 I Key interrupt
21 P05/INTP5 I Power switch detect
22 P06/INTP6 I MIC PTT
23 AVDD – +5V
24 AVREF0 – +5V
25 P10/ANI0 I Volume level input
26 P11/ANI1 I SP key 1/2
27 P12/ANI2 I (Temp)
28 P13/ANI3 I QT/DQT input
29 P14/ANI4 I Battery level input
30 P15/ANI5 I PLL unlock detect input
31 P16/ANI6 I *SQL level input
32 P17/ANI7 I *RSSI level input
33 AVSS – GND
34 P130/ANO0 O LSD (QT/DQT) output
35 P131/ANO1 O DTMF/BEEP output
36 AVREF1 – +5V
37 P70/RXD2/SI2 O Battery DET SW
38 P71/TXD2/SO2 I EXT. SP install check (No : H)
39 P72/ASCK2/SCK2 O Non connect
40 P20/RXD1/SI1 I
←
FPU
41 P21/TXD1/SO1 O
→
FPU
42 P22/ASCK1/SCK1 O Modem STB
43 P23/PCL O DTMF clock
44 P24/BUZ I DTMF decoder SD
45 P25/SI0 O LCD CS
46 P26/SO0 O Shift register 1 STB
47 P27/SCK0 O Shift register 2 STB
48 P80/A0 – Flash ROM access port.
49 P81/A1 –
Pin No. Port name I/O Function
50 P82/A2 – Flash ROM access port.
51 P83/A3 –
52 P84/A4 –
53 P85/A5 –
54 P86/A6 –
55 P87/A7 –
56 P40/AD0 –
57 P41/AD1 –
58 P42/AD2 –
59 P43/AD3 –
60 P44/AD4 –
61 P45/AD5 –
62 P46/AD6 –
63 P47/AD7 –
64 P50/A8 –
65 P51/A9 –
66 P52/A10 –
67 P53/A11 –
68 P54/A12 –
69 P55/A13 –
70 P56/A14 –
71 P57/A15 –
72 VSS – GND
73 P60/A16 – Flash ROM access port
74 P61/A17 –
75 P62/A18 – Flash ROM (4M bit) access port.
76 P63/A19 – Open
77 P64/RD – Flash ROM access port.
78 P65/WR –
79 P66/WAIT I TX Inhibit (Radio kill)
80 P67/ASTB – Open
81 VDD – +5V
82 P100/TI5/TO5 O EEPROM clock
83 P101/TI6/TO6 I/O EEPROM data
84 P102/TI7/TO7 O Common clock
85 P103/TI8/TO8 O Common data
86 P30/TO0 O Shift register output enable
87 P31/TO1 I Key counter return 1
88 P32/TO2 I Key counter return 2
89 P33/TI1 I Self program flag (Soft pull up)
90 P34/TI2 O Key counter enable
91 P35/TI00 I 2-tone decode latch
92 P36/TI01 I Digital SQL
93 P37 O PLL LE
94 TEST – GND
95~98 P90~P93 I Rotary SW 1~4
99 P94 I Toggle SW input
100 P95 I Modem RDT (RX DATA)