We want to access the UART pins from the J10 port ( M.2 Key E Expansion Slot ), so we need your guidance on how we can do that as the total no. of pins given in the datasheet is 74 but physically if we see only limited pins are visible on that port. Also, in the note they have mentioned, carrier board will only support single sided M.2 Key E modules. So we need clarity on how we can achieve this.
Is your objective to probe the UART0 pins on J10 while the M.2 Key E connector is populated? Since the connector only supports single-sided modules, there isn’t physically enough room to add probe wires on the UART0 signals on J10 since the pins are on the side covered by the module. So your other option is to add probe wires on the SO-DIMM connector’s pins in roughly the area marked in red below. The carrier board schematics, assembly drawing, and .brd Allegro layout file are provided in Jetson Orin Nano Developer Kit Carrier Board Reference Design Files
Hii, my aim is to take out the UART pins from M.2 Key E Expansion Slot, can you suggest any adapter with cable that will extract all the 75 signals so that I can use the UART signals. There are some adapters available with FFC cable, but I doubt if it has all the signals or not, may be those adapters are only for PCI and SSD not sure.
I have no recommendations for a breakout adapter board.