--
20
--
at R51,52?
appear at RA305
of
Note 1:
(Pin 8 usage)
On many TV's taking pin 8 high will auto select the SCART input. With a voltage range of 4.5V to
7.0V
a compatible set will select AV input in 16x9 mode. With a voltage range of 9.5v to 12.0v
the set will select AV input in 4x3 mode.
It has come to my attention that certain newer sets (notably those containing Sony CXA2069A
chipset)
implement a third intermediate switching level. Details are sketchy,
but it would appear to select a letterbox format rather than full 4:3 or full 16:9.
Note 2 : (Pin 16 usage)
On some devices pin 16 is used to select between composite or RGB input modes using the
same SCART.
With a voltage of 1-3V DC (with respect to pin 18) RGBS input mode is selected.
The switching signal needs to be able to source upto 20mA.
With a voltage range of 0-0.4V composite mode is selected
Scart supports CVBS Signals , RGB(Full-Scart) and Audio Right Left ,
and Y-C Mode Signals is not Supported.
7.3 HDMI (High-Definition Multimedia Interface)
7.3.1 Overview
-HDMI system architecture is defined to consist of Sources and Sinks.
A given device may have one or more HDMI inputs and one or more HDMI outputs.
Each HDMI input on these devices shall follow all of the rules for an HDMI Sink
and each HDMI output shall follow all of the rules for an HDMI Source.
- As shown in
Figure 12-1 HDMI Block Diagram
the HDMI cable and connectors
carry four differential pairs that make up the TMDS data and clock channels.
These channels are used to carry video, audio and auxiliary data. In addition,
HDMI carries a VESA DDC channel. The DDC is used for configuration and status
exchange between a single Source and a single Sink.
The optional CEC protocol provides high-level control functions between
all of the various audiovisual products in a user
’
s environment.
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