PRELIMINARY
CM2031
Application Information
Figure 10. Typical Application for CM2031
LAYOUT NOTES
1
3
TM
Differential TMDS Pairs should be designed as normal
Place MediaGuard as close to the connector as possible,
100Ω HDMI Microstrip. Single Ended (decoupled) TMDS
and as with any controlled impedance line always avoid plac•
ing any silkscreen printing over TMDS traces.
TM
traces underneath MediaGuard ,and traces between
TM
MediaGuard and Connector should be tuned to match
4
CM2020/CM2031 footprint compatibility. For the CM2031,
TM
chip/connector IBIS parasitics. (See MediaGuard Lay
Pin 37 becomes the VCEC power supply pin for the slew-rate
limiting circuitry. This can be supplied by a 0Ωjumper to VCEC
which should be depopulated to utilize the CM2020. The
100nF CBYP is recommended for all applications.
out Application Notes.)
2
Level Shifter signals should be biased with a weak pullup to
the desired local LV_SUPPLY. If the local ASIC includes suf•
ficient pullups to register a logic high, then external pullups
may not be needed.
© 2005, 2006 California Micro Devices Corp. All rights reserved.
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8/8/2006
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
