Ferrite Bead on HDMI Termination?

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX1
1

Hello,

I am designing a carrier board, and I am confused on why the ferrite bead termination is needed (LB1-LB8), in addition to the 499 ohm pull down, on the HDMI signals as seen on the reference schematic?

I don’t want to add something that is not needed, but I am sure you added for a good reason, I just can’t find it anywhere in the literature on what it is there for.

In the OEM Product Design Guide, it indicates it is optional.

Thanks.

2

These resistors are for HDMI Voff test (ID 7-3). The beads are optional to filter high frequency interference.