TM-481A
11
MCU: 30622MEP594GU (TX-RX unit IC707)
Pin No.
Name
I/O
Function
1
TONE
O
CTCSS/DCS output
2
DTMF
O
DTMF/BEEP/1750Hz output
3
PLLE
O
PLL IC chip select
4,5
NC
I
Not used
6
GND
-
GND
7
CNVSS
-
Not used
8
EVLLD
O
D/A converter chip select
9
BSHIFT
O
Beat shift
10
RESET
I
Reset
11
XOUT
O
X’tal (8MHz)
12
VSS
-
GND
13
XIN
I
X’tal (8MHz)
14
VCC
-
+5V
15
GND
-
GND
16
NC
I
Not used
17
POWER
I
Power key input
18
INT
I
MCU stop
1
9
NC
I
Not used
20
TX/RX
O
TX/RX
21
UL
I
PLL unlock detect
22,23
NC
I
Not used
24
EEPSDT
I/O
EEPROM data
25
EEPCK
O
EEPROM clock
26
EEPWP
O
EEPROM write protect
27,28
NC
I
(Nch open drain)
2
9
TXD1
O
Not used
30
RXD1
I
Not used
31
CLKFLS
I
Not used
32
BSYFLS
O
Not used
33
TXD
O
To PC
34
RXD
I
From PC
35
PTT
I
PTT input
36~38
NC
I
Not used
3
9
EMPFLS
I/O
Not used
40~43
NC
I
Not used
44
CEFLS
I/O
Not used
45~4
9
NC
I
Not used
50
AFM
O
AF mute
51
SPM
O
Speaker mute
52
AMPSW
O
AF AMP switch
Pin No.
Name
I/O
Function
53
DT
O
Common data
54
CK
O
Common clock
55
NC
I
Not used
56
DST1
I
Destination 1
57~5
9
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
6
9
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
7
9
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
8
9
VOL
I
Volume encoder
9
0
TEMP2
I
Temperature 2
9
1
TEMP1
I
Temperature 1
9
2
RSSI
I
RSSI input
9
3
SQIN
I
Squelch input
9
4
AVSS
-
GND
9
5
DTMF IN
I
CTCSS/DCS/1050Hz input
9
6
VREF
-
+5V
9
7
AVCC
-
+5V
9
8~100
NC
I
Not used
SEMICONDUCTOR DATA