TM-271A/271E
8
SEMICONDUCTOR DATA
■
Terminal Function
Pin No.
Name
I/O
Function
1
TONE
O
CTCSS/DCS/Clone output
2
DTMF
O
DTMF/BEEP/1750Hz output
3
PLLE
O
PLL IC chip select
4,5
NC
I
6
GND
-
GND.
7
CNVSS
-
8
EVLLD
O
9
BSHIFT
O
Beat shift
10
RESET
-
Reset
11
XOUT
-
X’tal (8MHz)
12
VSS
-
GND
13
XIN
-
X’tal (8MHz)
14
VCC
-
+5V
15
NMI
-
(Input only)
16
NC
I
17
POWER
I
Power key input
18
INT
I
µ
com stop
19
NC
I
20
TX/RX
O
TX/RX
21
UL
I
PLL unlock detect
22,23
NC
I
24
EEPSDT
I/O
EEPROM data
25
EEPCK
O
EEPROM clock
26
EEPWP
O
EEPROM write protect
27,28
NC
I
(Nch open drain)
29
SQC
O
Squelch signal output for TNC
(TxD for flash)
30
PKS
I
PTT input for TNC (RxD for flash)
31
CLKFLS
I
(GND)
32
BSYFLS
O
(Vcc)
33
TXD
O
To PC
34
RXD
I
From PC
35
PTT
I
PTT input
36~38
NC
I
39
EMPFLS
I/O
(GND)
40~43
NC
I
44
CEFLS
I/O
(Vcc)
45~49
NC
I
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
56
DST1
I
Destination 1
57~59
DST2~DST4
I
Destination 2~4
60
VCC
-
+5V
61
NC
I
62
VSS
-
GND
63
ADJ
I
For adjustment mode
64
NARROW
O
Wide/Narrow 2
65
WIDE
O
Wide/Narow
66,67
NC
I
68
LCDCL
O
Clock for LCD
69
LCDCE
O
Chip enable for LCD
70
LCDDO
O
Output data to LCD
71
LCDDI
I
Input data from LCD
72
NC
I
73
ENCB
I
Encoder input B
74
ENCA
I
Encoder input A
75
TNC9600
O
TNC speed
H : 9600, L : 1200
76
TNC1200
O
TNC speed
L : 9600, H : 1200
77
MICMT
O
MIC mute
78
NC
I
NC
79
8RC
O
8R control
80
8TC
O
8T control
81
NC
I
82
SBC
O
Battery switch
83~85
NC
I
86
CM
I/O
MIC key check
87
I
For AMR DTMF keypad MIC
88
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/Clone/1050Hz input
96
VREF
-
+5V
97
AVCC
-
+5V
98~100
NC
I
Microprocessor : 30622MAA-B85GP (TX-RX Unit IC101)
