Semiconductor Data - Kenwood TK-290 Service Manual

1. Microprocessor : MC-8800-802 (TX-RX Unit IC406)
1-1. Terminal function
Pin No. Port name I/O
1~4 A7~A4 I
5~7 AD5~AD3 I/O
8~11 A3~A0 I
12 Vcc –
13 OE I
14 VSS I
15~18 CH A~CH D I
19 TGL I
20 LE O
21 DATA O
22 CLOCK O
23 VOL I
24 PF I
25 TEMP I
26 LSDIN I
27 BATT I
28 UL I
29 GND –
30 MDATA O
31 EXSP I
32 AVDD –
33 AVREF1 –
34 AVSS –
35 LSDOUT O
36 HSDOUT O
37 AVREF2 –
38 AVREF3 –
39 SELF I
40 INTP0 I
41 STD I
42 BUSY I
43 2TONE I
44 TRD I
45 RTM I
46 SD I
47 RXD I
48 TXD O

SEMICONDUCTOR DATA

Function
NC : Flash memory address bus
NC : Flash memory address and data bus
NC : Flash memory address bus
+5V.
GND : Address latch output enable
GND : Test port
Rotary SW 1~4
Toggle switch input
PLL enable
Common data
Common clock
Volume level input
SP key 1/2
TEMP
Low speed data input (QT/DQT)
Battery voltage input
PLL unlock detect input
GND
Modem data input
EXT SP Connect : L, Non connect : H
+5V
+5V
GND
Low speed data output (QT/DQT)
High speed data output (DTMF/Beep)
+5V
GND
Self programming enable/disable
H : Enable, L : Disable
µ-com stop
DTMF decoder STD
Noise pulse input
2 tone data input
MSK modulation data output timing
pulse input
MSK demodulation data input timing
pluse input
DTMF decoder SD
Serial interface input
Serial interface output
Pin No. Port name I/O
49 DCK O DTMF clock
50 SCL O EEPROM clock
51 GND – GND
52 SDA I/O EEPROM data
53 LD O DA converter LD
54 MSTB O MSK modulation strobe
55 MSKE O MSK modulation enable
56 RESET I µ-com reset Active : L
57,58 X2, X1 – 14.754MHz (System clock)
59 FCLR O MSK flame reset output
60 RDT I MSK demodulation data input
61,62 STB2, STB1 O Shift register strobe 2, 1
63 SOE O Shift register output enable
64 PTT I PTT key input
65 LCDCS O LCD driver chip select output
66,67 KEY2, KEY1 I Key counter return 2, 1
68 LCDDO I Radio kill data input for optional board
69 KCK O Key counter clock output
70 KRST O Key counter reset output
71 A10 I/O NC : Not used
72 RD O Flash ROM read bus
73 OE I Flash ROM output enable
74 A17 I/O Flash memory address and data bus
75 CE I Flash memory chip enable
76 A11 I/O NC
77 A14 I/O NC
78,79 – – NC : Not used
80 GND – GND
81,82 A9, A8 I/O NC
83,84 A13, A14 I/O NC
85 WR O Flash ROM write bus
86 Vcc – +5V
87,88 A16, A15 I/O A16, A15
89,90 A16, A15 I A16, A15 : Flash memory address bus
91 A12 I/O NC
92 NC – NC : Not used
93~95 AD2~AD0 I/O NC
96,97 AD7, AD6 I/O NC
98,99 GND – GND
100 ASTB I/O NC : Flash memory address strobe
TK-290
Function
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