Semiconductor Data - Kenwood TM-481A Service Manual

MCU: 30622MEP594GU (TX-RX unit IC707)
Pin No. Name I/O
1 TONE O
2 DTMF O
3 PLLE O
4,5 NC I
6 GND -
7 CNVSS -
8 EVLLD O
9 BSHIFT O
10 RESET I
11 XOUT O
12 VSS -
13 XIN I
14 VCC -
15 GND -
16 NC I
17 POWER I
18 INT I
19 NC I
20 TX/RX O
21 UL I
22,23 NC I
24 EEPSDT I/O EEPROM data
25 EEPCK O
26 EEPWP O
27,28 NC I
29 TXD1 O
30 RXD1 I
31 CLKFLS I
32 BSYFLS O
33 TXD O
34 RXD I
35 PTT I
36~38 NC I
39 EMPFLS I/O Not used
40~43 NC I
44 CEFLS I/O Not used
45~49 NC I
50 AFM O
51 SPM O
52 AMPSW O

SEMICONDUCTOR DATA

Function
CTCSS/DCS output
DTMF/BEEP/1750Hz output
PLL IC chip select
Not used
GND
Not used
D/A converter chip select
Beat shift
Reset
X'tal (8MHz)
GND
X'tal (8MHz)
+5V
GND
Not used
Power key input
MCU stop
Not used
TX/RX
PLL unlock detect
Not used
EEPROM clock
EEPROM write protect
(Nch open drain)
Not used
Not used
Not used
Not used
To PC
From PC
PTT input
Not used
Not used
Not used
AF mute
Speaker mute
AF AMP switch
Pin No. Name I/O
53 DT O Common data
54 CK O Common clock
55 NC I Not used
56 DST1 I Destination 1
57~59 DST2~DST4 I Destination 2~4
60 VCC - +5V
61 NC I Not used
62 VSS - GND
63 ADJ I For adjustment mode
64 NARROW O Narrow
65 WIDE O Wide
66,67 NC I Not used
68 CL O Clock for LCD
69 CE O Chip enable for LCD
70 DO O Output data to LCD
71 DI I Input data from LCD
72 NC I Not used
73 ENCB I Encoder input B
74 ENCA I Encoder input A
75,76 NC O Not used
77 MICMT O MIC mute
78 NC I Not used
79 8RC O 8R control
80 8TC O 8T control
81 NC I Not used
82 SBC O Battery switch
83~85 NC I Not used
86 CM I MIC key check
87 MICKEY2 I For AMR DTMF keypad MIC
88 MICKEY I For AMR DTMF keypad MIC
89 VOL I Volume encoder
90 TEMP2 I Temperature 2
91 TEMP1 I Temperature 1
92 RSSI I RSSI input
93 SQIN I Squelch input
94 AVSS - GND
95 DTMF IN I CTCSS/DCS/1050Hz input
96 VREF - +5V
97 AVCC - +5V
98~100 NC I Not used
TM-481A
Function
11