Ic Pin Function Descriptions - FUNAI DR-C3835 Service Manual

Comparison Chart of Models and Marks
Model
DR-C3835
DR-B3737
IC1501 (SUB MICRO CONTROLLER)
Pin IN/ Signal
Mark
No. OUT Name
1 IN KEY-1
2 IN KEY-2
3 IN POW-SAF
4 IN AFT
5 - N.U.
6 IN EV+3.3V
7 IN BUP+3.3V +3.3V Power Supply
8 OUT OSC2
9 IN OSC1
10 - VSS
11 IN XIN
12 OUT XOUT
13 - GND
14 IN RESET
15 OUT 8POUT-1
16 OUT 8POUT-2
17 - N.U.
18 OUT SUB-TXD
19 IN SUB-RXD
20 OUT SUB-SCLK
21 - N.U.
SYS-
22 OUT
RESET
23 - N.U.
A - N.U.
24
B IN DAVN-L
A IN SEPOUT
25
B - N.U.

IC PIN FUNCTION DESCRIPTIONS

Mark
A
B
Function
Key Data Input 1
Key Data Input 2
Abnormal Voltage
Detection
Tuner Voltage Input
Signal
Not Used
+3.3V Power Supply
Main Clock Output
Main Clock Input
Ground
Sub Clock Input
Sub Clock Output
Ground
Sub Micro Controller
Reset Signal
Control SCART 1 8Pin
Level by using 8POUT-
1 and 8POUT-2
Control SCART 1 8Pin
Level by using 8POUT-
1 and 8POUT-2
Not Used
Transmission Data to
Main Micro Controller
Reception Data from
Main Micro Controller
Communication Clock
with Main Micro
Controller
Not Used
System Reset Signal
Not Used
Not Used
VPS/PDC Data
Receive = "L"
Compound
synchronization signal.
Not Used
Pin IN/
Mark
No. OUT
26 OUT 1V2CONT
27 IN REMOTE
28 - N.U.
29 IN RDY
30 IN P-DOWN
31 - N.U.
32 - N.U.
IN/
33 SUB-SDA
OUT
34 OUT SUB-SCL
35 - N.U.
36 - N.U.
DVD-
37 IN AUDIO-
MUTE
AUDIO-
38 OUT
MUTE
SCART-
39 OUT AUDIO-
MUTE
40 - N.U.
41 - N.U.
42 - N.U.
43 - N.U.
44 - N.U.
45 - N.U.
46 - N.U.
47 - N.U.
48 OUT FL-DIN
49 OUT FL-STB
50 OUT FL-CLK
51 - N.U.
REG-
52 OUT
CONT
53 OUT PWSW
54 - N.U.
FAN-
55 OUT
CONT2
56 - N.U.
57 - N.U.
58 - N.U.
1-13-1
Signal
Function
Name
Power Regulator
Control Signal
Remote Signal Input
Not Used
Ready/Busy
communication Control
with Main Micro
Controller
Power Voltage Down
Detector Signal
Not Used
Not Used
Serial Data
Serial Clock
Not Used
Not Used
DVD-Audio Mute
Control Signal
Audio Mute Control
Signal
SCART-Audio Mute
Control Signal
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Serial Data
Serial Interface Strobe
Serial Clock
Not Used
Power Regulator
Control Signal
Power ON Signal
Output
Not Used
Fan Motor Control
Signal
Not Used
Not Used
Not Used
E7B22PIN