TMDS171 Datasheet, PDF (46/62 Pages) Texas Instruments – 3.4 Gbps TMDS RETIMER

TMDS171, TMDS171I
SLLSEN7A – OCTOBER 2015 – REVISED DECEMBER 2015
www.ti.com
9.2.4 Sink Side Application
For a sink side application HPD needs consideration. The TMDS171 drives the HPD signal to 3.3V which
meetings requirements but if 5 V HPD signaling is required the two circuits shown in Figure 60 are required. As
sources are not consistent in implementing all aspects of the DDC link it is recommended to configure the
TMDS171 as per Figure 60. Another consideration in relationship to how HPD is implemented is the architecture
and behavior of the HDMI RX/Scalar.
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