Depends on the LCD, distance, capacitance, and the connector impedance of the SOM. The SOM supplier should be able to answer that question via an application note.
Gerald On Wed, Sep 28, 2016 at 9:42 AM, Francisco Aguerre < franciscoague...@gmail.com> wrote: > Hello, > > I am working with a System-on-Module based on the BeagleBone Black and I > need to connect a TFT LCD screen that goes in the front panel of a > rackmounted 19'' enclosure. The cable has to run a distance of about 15cm > and I am concerned about EMI stuff. > > My question is: what is the appropiate line impedance for the RGB signals? > What about termination resistor values? > > I've seen that the TI Sitara Starter Kit has 33ohm termination resistors, > but I am not sure how/why that value is chosen and how relates to line > impedance. I know for example that for Ethernet you need 100ohm > differential and for MII is generally 50ohm single ended. Is there a > standard value for > > Any suggestions will be appreciated! > > Regards, > > Francisco > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/beagleboard/bc3de5fd-09a9-4afe-8b3a-d32b31a5f4eb%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/bc3de5fd-09a9-4afe-8b3a-d32b31a5f4eb%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- Gerald ger...@beagleboard.org http://beagleboard.org/ gcol...@emprodesign.com -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAHK_S%2BcWPJvMKdjeBaTe%3DQ83H33%3DPxKMZo7Hk2BRyh5C%3DPWkiw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
