Passive Termination

The block diagram below represents a reduced cost option available to the designer that does not include an HDMI re-driver. The HDMI interface will operate at lower resolutions without an HDMI re-driver. The TMDS signal pairs are passively terminated. Active and passive level-shifting options exist for the DDC and HPD lines. The required HPD logic inversion is handled by an N-FET device and the recommended series capacitors, common-mode chokes, ESD and backdrive prevention components are also illustrated.

Note: Terminations, common mode choke (CMC) and ESD protections repeat for each signal pair.

See also: Component Values and Recommendations

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