Datasheet

AD8194
Rev. 0 | Page 14 of 16
Evaluation Board
The AD8194 evaluation board illustrates one way to implement
a 2:1 HDMI link switch with an AD8194 and a CMOS switch.
The AD8194 evaluation board deviates from a typical
application in that it uses an HDMI connector for the output as
well as for the inputs. This setup makes it easy to connect
equipment to the AD8194 evaluation board with standard
HDMI cables. However, this arrangement requires crossing over
the TMDS signals on the output side (see
Figure 24).
In a typical application, the output of the AD8194 is routed
directly into an HDMI receiver. Because a receiver is generally
designed to interface directly to an HDMI input connector, it is
not necessary to cross over the TMDS signals in a typical
application (see
Figure 25).
CROSSOVER
REQUIRED
HDMI
CONNECTOR
1
19
19
AD8194
HDMI
CONNECTOR
1
1
19
HDMI
CONNECTOR
07004-027
Figure 24. Block Diagram of AD8194 Evaluation Board Showing Output Crossover
HDMI
CONNECTOR
HDMI
RECEIVER
1
19
AD8194
07004-026
Figure 25. HDMI Signals to HDMI Receiver, No Crossover Required