1. If you need industrial temperature range the only choice is the industral CM4 version. There is no industrial CM5.I have the following questions:
- Which CM module and IO board will be the best for my application?
- I saw people using LAN7500 chip (a USB 2.0-to-Ethernet bridge) and LAN7800 (a USB3.0-to- Ethernet bridge)
viewtopic.php?t=380457
Except the obvious data rate differences, what else can be the tradeoff keeping my application in mind.- I need HDMI, RTC, USB and Ethernet ports from existing design. All other ports seem to be redundant for my project. Is there anything critical that i'm missing here or should keep it with my new design?
- Any other comment or suggestions?
2. Don't use USB at all if possible. CM4 has got no USB3 and only the USB2 port of the Broadcom processor. This port MUST be exposed for flashing the module on for example an USB-µAB or USB-µB connector (USB-C is more difficult). If you need this port for a different purpose you MUST include an USB mux on your custom IO board.
3. For a second Ethernet port the easiest way is buying an M.2 Ethernet board. The Intel Ethernet chips require firmware and tools you won't get, and datasheets are also difficult to obtain.
Suggestion:
https://www.kalea-informatique.com/cart ... -srktv.htm
There are also dual-port boards available:
https://www.kalea-informatique.com/cart ... l-i226.htm
4. A custom designed IO board is the best technical solution.
5. This seems to be a commercial project. What is the estimated quantity?
Statistics: Posted by fchk — Fri Jun 20, 2025 9:04 am