CM2020-01TR_11 Datasheet, PDF(7/9 Page) ON Semiconductor – HDMI Transmitter Port Protection and Interface Device

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CM2020-01TR_11 Datasheet, PDF (7/9 Pages) ON Semiconductor – HDMI Transmitter Port Protection and Interface Device

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CM2020â01TR

APPLICATION INFORMATION

LAYOUT NOTES

NOTE 1) Differential TMDS Pairs should be

designed as normal 100 W HDMI microstrip.

Single Ended TMDS traces underneath CM2020

and between CM2020 and Connector should be

tuned to match chip/connector parasitics. (See

MediaGuardt Application Notes.)

NOTE 2) Level Shifter signals should be biased

with a weak pullup to the desired local

LV_SUPPLY. If the local ASIC includes sufficient

pullups to register a logic high when the CM2020

NFET is âoffâ, then external pullups are not needed.

NOTE 3) Place CM2020 as close to conector as possible,

and as with any controlled impedance line avoid ANY

silkscreening over TMDS lines.

NOTE 4) CBYP (Bypass Capacitor) is optional for the

CM2020â01TR.

NOTE 5) CEC pullup isolation. The 27k RCEC and a Schottky DCEC

provide the necessary isolation for the CEC pullup.

Figure 3. Typical Application for CM2020â01TR

http://onsemi.com

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