Terminal Function Of Microprocessor 5 - Alinco DR-M03SX Service Manual

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4) Terminal Function of Microprocessor
Port No. I/O Logic
1 O
2 O
3 O
4 O
5 O
6 I
7 I
8 I
9 O
10 O Clock
11 I Active Low MUP
12 I Active Low MDN
13 I NoUse
14 O Active Low SQL
15 O ActiveHigh MUT
16 I Active Low REl
17 O Clock
18 O Clock
19 O Clock
20 O Clock
21 I ActiveHigh XWR
22 I Active Low RE2
23 O Active Low BPO
24 I Active Low TID
25 I Active Low BU
26 I
27 l Active Low RST
28 I
29 O
30 I
31 I Active Low TDO
32 O Active High DTD
33 O NoUse
34 I Active Low DD4
35 I Active Low DD3
36 I Active Low DD2
37 I Active Low DD1
38 I Active Low DD0
39 O Clock
PinName Description
SEG19 LCDSegment19 Output
SEG20 LCDSegment20 Output
SEG21 LCDSegment21 Output
SEG22 LCDSegment22 Output
SEG23 LCDSegment23 Output
GND AnalogGround 0V
Vref Reference Voltage Input 5V
Vcc CPU Power Supply hnput 5V
1750_ ToneBurstOutput
BEEP BeepToneOutput
Channel Up Input (Microphone Control)
Channel Down Input (Microphone Control)
EID
Squelch Control (L: Audio is off.)
Microphone Mute (H: Mic Amp is off.)
RotaryEncoder Input
TO3 ToneOutput
TO2 ToneOutput
TO1 ToneOutput
TO0 ToneOutput
EEPROM Write Status External Input
RotaryEncoder Input
Band Plan Detection Input (Common)
Tone Unit Detection Input
Back Up Signal Detection input
GND Ground
ResetInput
Xin Crystal Oscillator Terminal (3.58MHz)
Xout Crystal Oscillator Terminal (3.58MHz)
GND Ground
CTCSS Tone Detection Output
For Trunking
Band Plan 4 (V/U Selection)
Band Plan 3 (445/435 Selection)
Band Plan 2 (5k/12.5k Selection)
Band Plan 1
Band Plan 0
SCL Clock Output for EEPROM
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