REMOVE THIS WHEN YOU ANSWER THE QUESTIONS IT ASKS
YOUR DESCRIPTION IS UNCLEAR. PEOPLE MAY NOT UNDERSTAND THE QUESTION PROPERLY AND SO WASTE TIME ANSWERING IT. You talk about transcievers and devices. My understanding (which may be wrong) is that you have maybe 500 to 600 'devices'. Please provide a diagram and description that makes it clear the number of each component/module/subsystem and their relative distance from their contrioller/provcessor / ... . \ What is the nature of the interface between the transceiver and the devices?
I am routing a UART connection between multiple devices, the baud rate is 460800. I have a microcontroller which sends to and reads from 20 transceivers using UART. The TX pin from the microcontroller is directly connected to the RX pins of all transceivers. And the TX pin of each transceiver is connected to the RX pin of the microcontroller via a diode. Each transceiver controls different sets of devices at different locations. Each set of slave devices comprises 25 to 30 devices and is about 200 meters away from my device to the last device of the set
I have the transceivers layout as a 4x5 matrix, what is the best way to route the UART lines to minimize EMI? Is it a) or b) or some other way?