TX-2100
MICROPROCESSOR-TERMINAL DESCRIPTIONS
Pin No.
Function
I/O Description
1-7
7G-1G
O
Grid control output pin
8
VDD
Power supply pin
9
CL
O
Clock output pin for selector switch and PLL IC.
10
DATA
O
Data output pin for selector switch and PLL IC.
11
PLL
O
Chip enable output pin for PLL IC.
14
STB
O
Chip enable output pin for selector switch IC.
15
㪭㪦㪣㩷㪬㪧
O
Volume control output pin
16
VOL DOWN
O
Volume control output pin
17
RST
I
System reset input pin
20
AVSS
Ground pin for A/D converter
21
MODE2
I
Mode initializing pin
22
AREA
I
Band area set initializing pin
23
MADE1
I
Mode initializing pin
24-28
K4-K0
I
Operation key connection pin
29
AVDD
A/D converter power supply pin
30
AVREF
Reference voltage input pin for A/D converter
33
VSS
Ground pin
34,35
X1,X2
Main system clock pin. Connect the ceramic oscillator.
36
T-MUT
O
Muting control output pin for tuner section
37
F MUT
O
Muting control output pin for amplifier section
38
SPBRL
O
Speaker relay B control output pin
39
SPARL
O
Speaker relay A control output pin
40
POWER
O
Power relay control output pin
41
SYSOUT
O
System code output pin
45
POFF
I
Power failure detection input pin
46
SYSIN
I
System code input pin
47
REMIN
I
Remote control signal input pin
50
STBY
O
Standby indicator control pin
52
VDD
Power supply pin
53
ST
I
Stereo broadcast detection input pin
54
SD
I
Broadcast detection pin
58
PROTECT
I
Protection circuit detection pin
59-70
P18-P5
O
Segment control output pin
71
VLOAD
Pull-down resistor connection pin
72-75
P4-P1
O
Segment control output pin
76-80
12G-8G
O
Grid control output pin
