TC-700 CPU Pins
15
CPU Pins
1. CPU pins are as follows
:
No.
MCU Port Name
Port Name
Input/Output
Features
1
P94/DA1
APC/TV
O
Automatic Power Control
2 P93/DA0 TONEO O
DTMF/2-5Tone/Beep tone output/ ALARM
tone output
3 P92/TB2IN NC
O
NC
4 P91
O
5 P90
SHIFT
O
Clock
beat-frequency
6 BYTE
BYTE
I
7
CNVSS
CNVSS
I
8 P87/XCIN
O
9 P86/XCOUT
O
10
RESET
RESET
I
Input low level to enter all reset mode
11
XOUT
XOUT
O
Crystal oscillator output pin
12
VSS
GND
I
GND
13
XIN
XIN
I
Crystal oscillator output pin
14
VCC
VCC
I
VCC
15 P85/NMI NMI
I
16 P84/INT2 AFCK
I
2346
TCLK
17
P83/INT1
AUX1
O
Indication for external scrambler
18
P82/INT0
AFRDF
I
2346 RDF
19 P81
O
20 P80
PTTCO
O
PTTCO
21 P77
NC
O
22
P76/TA3O
CTCOUT
O
CTC _OUT (PWM) TO VCO
23 P75
NC
O
24
P74/TA2O
CTC_PLL
O
CTC_PLL (PWM)
25
P73
AUX2
COM5
Indication for receive/transmit status
26 P72/TA1O 1/2OSC
O
27 P71/RxD2/TB5IN
TONEI
O
28 P70/TxD2
29
P67/TxD1
TXD
O
Serial date output.
30
P66/RxD1
RXD
I
Serial date input.
31 P65
I
32
P64
O
33
P63/TxD0
I
COM4 MANDOWN Input Pin
34
P62/RxD0
O
COM3
Содержание TC-700
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Страница 32: ...TC 700 Disassembly and Assembly for Repair 31 Fig 5 Fig 6...
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