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 µcom 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)
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