DP-4X MAIN and SUB SYNC CIRCUIT DIAGRAM EXPLANATION
PAGE 03-12
(See Main/Sub Sync Circuit Diagram for details)
This diagram shows the route for sync to the RGB Processor (Rainforest IC)
IY04
.
I502 Main Y Pr/Pb Selector Sync Inputs and Outputs:
Any signal that have been selected for the Main Picture, is selected by this IC via I
2
C communications to the Mi-
croprocessor
SDA2
pin
3
and
SCL2
pin
4
.
It selects the following; 1H NTSC, Component Inputs, ATSC Tuner (Not in the DP-43 Chassis) and the
HDMI inputs.
I502 Inputs:
This IC Receives the following 3 types of Inputs;
1.
1H NTSC:
The outputs from
IV08
are received by
I502
. They will be either the Main Tuner, Com-
posite Video 2, 3, 4 or 5, S-In 3, 4 or 5, Component NTSC Y Pr/Pb. Any of these inputs that have
been selected by
IV08
are received by
I502
on the following pins;
Y
pin
66
,
Cb
pin
68
and
Cr
pin
70
.
2.
Component 1 or 2, HDMI 1 Inputs: I502
receives the Component 1 or 2 and/or HDMI 1 inputs at
the following pins,
Y
pin
78
,
Pb
pin
80
and
Pr
pin
2
.
3.
ATSC (Digital Tuner) Inputs: I502
receives the Digital Tuner (1080i) inputs at the following
pins,
Y
pin
72
,
Pb
pin
74
and
Pr
pin
76
. (Not in the DP-43 Chassis),
I502 Main H and V Sync Outputs
;
Dependant upon the Customer’s selection for the Main Picture,
I502
outputs the sync signals on the fol-
lowing pins;
H Sync
pin
19
and
V Sync
pin
17
. These are input to
I503
.
MAIN PICTURE SYNC IN AND OUT OF I503 SYNC INVERTER:
The H and V Sync arriving at pins
1
and
3
of
I503
are routed through inverters. H. Sync is inverted once
to match the requirements of the Flex Converter. V. Sync is inverted twice.
The H Sync is output pin
2
. The V Sync is output pin
6
.
MAIN PICTURE SYNC INTO THE FLEX CONVERTER/PinP MODULE UY01:
H Sync is input to pin
8
of the
PFC1
connector and into the Flex Converter/PinP Module.
V Sync is input to pin
7
of the
PFC1
connector and into the Flex Converter/PinP Module.
MAIN PICTURE SYNC FROM THE FLEX CONVERTER UY01 TO THE RAINFOREST IC IY04
H Sync
output from pin
7
of connector
PFC2
to pin
12
of the Sync Selector
IY05
.
H Sync for a true 1080i signal is input to pin
13
of the Sync Selector
IY05
.
Dependant upon the Main Picture Selected,
IY05
outputs the appropriate H. Sync from pin
14
to the
Rainforest IC pin
50
.
IY05
Sync Selection is determined by the output from the Rainforest
IY04
pin
34
to pin
11
. High outputs true 1080i H. Sync and Low outputs Flex Converter upconverted (1080i) 540 if
progressive.
Note: True 1080i bypasses the Flex converter.
V Sync
is output from pin
6
of connector
PFC2
to pin
52
of the of the Rainforest IC
IY04
.
Since Sync is the same for all signals, (60Hz) there is no need to route through a sync selector like
Horizontal Sync.
(Continued on page 13)
Summary of Contents for 51F510
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Page 5: ...DP 4X CHASSIS INFORMATION POWER SUPPLY INFORMATION SECTION 1 ...
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Page 31: ...DP 4X CHASSIS INFORMATION MICROPROCESSOR INFORMATION SECTION 2 ...
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Page 45: ...DP 4X CHASSIS INFORMATION VIDEO INFORMATION SECTION 3 ...
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Page 61: ...DP 4X CHASSIS INFORMATION AUDIO INFORMATION SECTION 4 ...
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Page 67: ...DP 4X CHASSIS INFORMATION DEFLECTION INFORMATION SECTION 5 ...
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Page 79: ...DP 4X CHASSIS INFORMATION DIGITAL CONVERGENCE INFORMATION SECTION 6 ...
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Page 95: ...DP 4X CHASSIS INFORMATION CHASSIS PICTURES SECTION 07 ...
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