Control Port Function - Sanyo HT28745 Service Manual

System Control (CPU : IC801)
Pin Name
1 P11/SCL1
2 P00/PWM0
3 P01/PWM1
4 P02/PWM2
5 P03/PWM3/AD1 Key in
6 P04/PWM4/AD2 AVSW2
7 P05/AD3
8 P06/INT2/AD4
9 P07/INT1
10 P20/SCLK/AD5
11 P21/SOUT/AD6
12 P22/SIN/AD7
13 P23/TIM3
14 P24/TIM2
15 P25/INT3
16 P36/XCIN
17 P27/XCOUT
18 CNVss
19 Xin
20 Xout
21 Vss
22 Vcc
23 FLT
24 HLF
25 Vhold
26 Cvin
27 RESET
28 Pullup
29 P15
30 P31/SCL3
31 P30/SDA3
32 CLK/cont/P10
33 P55/OUT
34 P54/R
35 P53/G
36 P52/B
37 P51/Vsync
38 P50/Hsync
39 P16/AD8/TIM2
40 P14/SD2
41 P13/SDA1
42 P12/SCL2
Mode Switching Table
Mode AVSW1
AV2 (Component)
AV3
Others

CONTROL PORT FUNCTION

Function
IIC bus clock for TV
Audio AMP mute out
DM Reset out
BPF-SW
AFT S-Figure in
ABL in
RC in
SCLK for DM
SOUT for DM
SIN for DM
CS for DM
Power Failure in
Normal SW
Status in
Ack out
CNVss
Xin
Xout
Vss
Power in
Filter for IC
HLF out
Vhold
Cvin
RESET in
Pullup
AVSW1
IIC bus clock for AV
IIC bus data for AV
Fix/Variable out
OSD BLK out
OSD R out
OSD G out
OSD B out
Vsync
Hsync
TV relay out
IIC bus data for NVL
IIC bus data for TV
IIC bus clock for NVL
AVSW2
(pin29)
High Low
Low High
Low Low
I/O Description
IN
OUT Active : High
OUT Reset Output : Low
OUT Active : High
IN
IN Active : High
IN
IN Active : Low (Only SDTV model)
IN
OUT
OUT
IN
OUT
OUT Active : Low
OUT Active : High (Only SDTV model)
IN IIC bus control for factory, Bus release request : Low
OUT IIC bus control for factory, Bus release : Low
–
IN Main Clock Input, Fosc=8MHz
OUT Main Clock Output, Fosc=8MHz
0Vdc
5Vdc±10%
IN
OUT for Caption RC-Filter
OUT for Caption
IN for Caption
IN Need more than 2µ sec
IN 10K Ω
OUT Active : High
IN Only HDTV model
OUT Only HDTV model
OUT Fix : Low, Variable : High
OUT Polarity : Positive
OUT Polarity : Positive
OUT Polarity : Positive
OUT Polarity : Positive
IN Polarity : Negative
IN Polarity : Negative
OUT Active : High
OUT
OUT
IN
(pin6)
— 55 —