Icom Ci V Usb Interface Schematic Top Updated

: Use the FTDI's Flash Configurator or equivalent software to set the FTDI chip to the correct parameters (e.g., baud rate = 9600, data bits = 8, stop bits = 1, parity = none).

: A simple passive circuit using a switching diode (like a 1N4148) and a pull-up resistor to combine the lines into one. icom ci v usb interface schematic top

Let’s expand into a real component-level schematic. This is the found in Icom CI-V interfaces (e.g., the “RA0SMS CI-V” design or the “K8ZTT USB-to-CI-V”): : Use the FTDI's Flash Configurator or equivalent

: Because the CI-V bus is a single wire, the separate TX and RX lines from the USB chip must be merged. The "Diode Trick" baud rate = 9600