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MICROPROCESSOR TERMINAL DISCRIPTIONS
Pin No.
Function
Description
1
4G
2
5G
3
6G
Grid output pin
4
7G
5
8G
6
9G
7
10G
8
VDD
Positive power supply pin(+5V)
15
POWER
Power source control pin
17
RESET
System reset pin
19
TUMUT
Muting control output pin
20
AVSS
Ground voltage pin for A/D converter
22
STEREO
Stereo broadcast detection input
T E
L 1 3 9 4 2 2 9 6 5 1 3
23
SD
Broadcast detection input
24
SIGNAL
Signal strength level input pin
25
MODE
Initializing pin for RDS broadcast
26
AREA
Initializing pin for band area
27
K1
Key input pin
28
K0
29
AVDD
Analog power supply pin for A/D converter
30
AVREF
Reference voltage pin for A/D converter
Crystal connection pins for subsystem clock
31
XT1
Not used
32
XT2
33
VSS
Ground
Crystal connection pins for main system clock
34
X1
Connect the cwramic oscillator 4.19MHz
35
X2
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38
FOUT
Frequency output pin for adjustment
39
PLL CE
Chip enable output pin for PLL IC
40
CLK
Clock output pin for PLL IC
.
41
DATA
Data output pin for PLL IC
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8
9
Pin No.
Function
Description
42
RDSDATA
Data input pin from RDS decoder
43
RDSSIG
Signal input pin from RDS decoder
44
RDSSCK
Clock input pin from RDS decoder
45
POFF
Power failure detector input pin
46
SYSIN
System code input pin
48
IC
Internal conecctionpin
49
SYSOUT
System code output pin
52
VDD
Positive power supply pin(+5v)
60
P1
61
P2
62
P3
63
P4
64
P5
Q
Q
3
7
6
3
1
5
1
Segment output pin
65
P6
66
P7
67
P8
68
P9
69
P10
70
P11
71
VLOAD
Pull-down resistor connection pin
72
P12
73
P13
74
P14
Segment output pin
75
P15
76
P16
77
P17
Grid output pin
78
1G
c o
79
2G
80
3G
.
The pin number not written is ground.
2
4
2
9
8
5
0
8
9
2
4
9
8
2
m
T-405TX
9
9
9
9
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