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2 、 HDMI switch ： SIL9185
The SiI9185A 3:1 HDMI 1.3 Switch is the first generation of TMDS switching devices that
support Revision 1.3 of the HDMI Specification (HDMIConsortium; June 2006). With three HDMI
inputs and a single output, the switch provides a low-cost method of adding additional HDMI ports to
the latest digital TVs(DTVs). New DTVs can easily connect to the manyHDMI sources coming on the
market, including DVDs, Set Top Boxes (STBs), game consoles, PCs,camcorders, and digital still
cameras. The SiI9185Aswitch is a fully compliant HDMI device that provides a simple, low-cost
method of retransmitting protected digitalaudio and video, giving consumers a truly alldigital
experience. Built-in backward compatibility withDVI 1.0 allows HDMI systems to connect to any
DVI1.0 source. For source-side applications, the SiI9185A DDC switching an be bypassed with an
external 4-channel I2C bus witch to allow clock stretching.
SIL9185 Functional Block Diagram
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