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IC PIN FUNCTION DESCRIPTIONS
IC1501 (SUB MICRO CONTROLLER)
Pin
IN/
Signal
No.
OUT
Name
1
IN KEY-1
Key Data Input 1
2
IN KEY-2
Key Data Input 2
3
IN POW-SW
Abnormal Voltage Detection
4
IN AFT
Tuner Voltage Input Signal
FLASH-
5
-
Flash Writing Voltage
VPP
6
IN VCC
+3.3V Power Supply
7
IN VCC
+3.3V Power Supply
8
OUT XOUT
Main Clock Output
9
IN XIN
Main Clock Input
10
-
GND
Ground
11
IN XCIN
Sub Clock Input
12 OUT XCOUT
Sub Clock Output
13
-
GND
Ground
Micro Controller Reset
14
IN RESET
Signal
15
-
NU
Not Used
16
-
NU
Not Used
17
-
NU
Not Used
Transmission Data to Main
18 OUT SUB-TXD
Micro Controller
Reception Data from Main
19
IN SUB-RXD
Micro Controller
Communication Clock with
20 OUT SUB-SCLK
Main Micro Controller
21
-
NU
Not Used
SYS-
22 OUT
System Reset Signal
RESET
23
-
NU
Not Used
24
-
NU
Not Used
25
-
NU
Not Used
Power Regulator Control
26 OUT 1V2CONT
Signal
27
IN REMOTE
Remote Signal Input
28
-
NU
Not Used
Ready/Busy communication
29
IN RDY
Control with Main Micro
Controller
Power Voltage Down
30
IN P-DOWN
Detector Signal
31 OUT FL-SEL
FL Select (Low Level)
32
-
NU
Not Used
Function
1-14-1
Pin
IN/
Signal
No.
OUT
Name
IN/
33
SDA
Serial Data
OUT
34 OUT SCL
Serial Clock
IN/
FLASH-
35
Serial Data Signal for Flash
OUT
SDA
FLASH-
36 OUT
Serial Clock Signal for Flash
SCL
37
-
NU
Not Used
38
-
NU
Not Used
AUDIO-
39 OUT
Audio Input Select Signal 2
SW2
AUDIO-
40 OUT
Audio Input Select Signal 1
SW1
VIDEO-
41 OUT
Video Input Select Signal 1
SW1
VIDEO-
42 OUT
Video Input Select Signal 2
SW2
VIDEO-
43 OUT
Video Input Select Signal 3
SW3
VIDEO-
44 OUT
Video Mute Control Signal
MUTE
45
-
NU
Not Used
DTV1.05V-
46 OUT
DTV1.05 Control Signal
CONT
47
-
NU
Not Used
48
-
NU
Not Used
49
-
NU
Not Used
50
-
NU
Not Used
51
-
NU
Not Used
REG-
Power Regulator Control
52 OUT
CONT
Signal
53 OUT PWSW
Power On Signal Output
54
-
NU
Not Used
55
-
NU
Not Used
56
-
NU
Not Used
57
-
NU
Not Used
58 OUT LED3
Timer LED Control Signal
59 OUT LED2
Recording LED Control Signal
60 OUT LED1
Power LED Control Signal
61
-
GND
Ground
62
-
NU
Not Used
63
-
NU
Not Used
64
-
NU
Not Used
Function
E7H50PIN
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