Semiconductor Data - Puxing PX-666 Service Manual

CPU PIN FUNCTION
ITEM DESCRIPTION
1 EN1
2 EN2
3 EN3
4 EN4
5
CLK ROM
6
CLK PLL
7
CS PLL
8
LD
9
DATA ROM
10
MIC MUTE
11
P-AMP
12
NC
13
NC
14
NC
15
AVCC
16
RXO
17
RXI
18
NC
19
NC
20
BEEP/QT
21
LC
22
AVSS
23
APC
24
N/W
25
ARX
26
RSSI
27
AN SQL
28
BATT Test
29
OSC in
30
OSC out
31
VSS
32
Reset
33
Vdd
34
DQT
35
SAVE
36
P-TX
37
P-RX
38
TX232
39
EN1
40
MONI
41
PTT/RX232
42
DATA
43
LED G
44
LED R
I/O
I Encoder input
I Encoder input
I Encoder input
I Encoder input
I/O CLOCK AND EEPROM
O CLOCK AND PLL
O CS PLL port
O Unlock Detection
I/O Data and eeprom
O MIC MUTE CONTROL
O Audio amplifier power supply control output
- Non-connect
- Non-connect
- Non-connect
- 5M Direct Current output
O IF output
I IF input
- Non-connect
- Non-connect
O BEEP output /CCTCS tone signal output
O Direct current transfer filter
- Connect to VSS
O TX:Automatic power/RX: BPT automatic gain output
O Width/Narrow control
O Receiver audio output control
O Squelch level output control
O Squelch audio output port
O Battery check
I Internal oscillator input
I Internal oscillator output
- GND
I MCU Reset
I MCU 5M power input
O DTC control output
O Save function control
O Tamsmit control
O Receiver control
O RS-232C PC output
I Encoder input control
O "MONI" key input
I PTT key /RX232C PC input
O PLL data output
I LED green
I LED red
PX-666
FUNCTION