Icom Ci V Usb Interface Schematic Top -

The CI-V bus is a single-wire, bi-directional serial communication system that operates at TTL voltage levels (0V to 5V).

to convert USB signals into standard asynchronous serial UART signals (TX and RX). Level Shifting/Interface Logic

Set the (default 0x5E for IC-7000, 0x76 for IC-7300, etc.) in your software (e.g., WSJT-X, FLRig, HRD).