7
1
P67/AN7 SMT I S-meter input
2 P66/AN6 SQL I Noise level input for squelch
3 P65/AN5 BAT I Low battery detection input
4 P64/AN4 TIN I CTCSS/DCS tone input
5 P63/SCLK22/AN3 BP1 I Band plan 1
6 P62/SCLK21/AN2 UND O DCS signal mute
7 P61/SOUT2/AN1 DCSW O DCS signal mute
8 P60/SIN2/AN0 FKEY I Function key input
9 P57/ADT/DA2 DCS O CTCSS/DCS tone output,Tu n i n g v o lt a g e o u t p u t
10 P56/DA1 DTOUT O DTMF output/EVR control output
11 P55/CNTR1 C5C O C5V power ON/OFF output
12 P54/CNTR0 TBST O Tone burst output
13 P53/RTP1 STB2 O Strobe for DAC
14 P52/RTP0 RVC O VHF-RX power ON/OFF output
15 P51/PWM3 CLK O Serial clock output
16 P50/PWM0 DATA/UL I/O Serial data output/Unlock input
17 P47/SROY1 RUC O UHF-RX power ON/OFF output
18 P46/SCLK1 STB1 O Strobe for PLL
19 P45/TXD CTX O UART data transmission output
20 P44/RXD CRX I UART data reception input
21 P43/∅/TOUT BEEP/ BP2 I/O Beep tone output/Band plan 2
22 P42/INT2 RE2 I Rotary encoder input
23
P41/INT1 STL I Steal input
24 P40 SD O Signal detection output
25
P77 PT5 I PTT input
26 P76 DSQ I Digital squelch input
27 P75 SSTB O Strobe signal to scramble IC
28 P74 AFS O AF switch output
29 P73 C/S O Digital scramble ON/OFF
30 P72 DUD I Digital unit detect
31 P71 SCR I Scramble IC ready signal
32 P70/INTO BU I Back up signal detection input
33
RESET RESET I Reset input
34 XCIN NC _
35
XCOUT NC
36
XIN XIN I Clock input
37
XOUT XOUT O Clock output
38 VSS VSS CPU GND
39 P27 PSW I Power switch input
40 P26 SDA O Serial data output for EEPROM
41 P25 SCL O Serial clock output for EEPROM
42 P24 RE1 I Rotary encoder input
43 P23 KI0 I Key matrix input
44 P22 KI1 I Key matrix input
45 P21 KI2 I Key matrix input
46 P20 KI3 I Key matrix input
47 P17 KO3 O Key matrix output
48 P16 KO2 O Key matrix output
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No. Terminal Signal I/O Description
