Icom Ci V Usb Interface Schematic Top Jun 2026

The DATA line is held HIGH (+5V) by a pull-up resistor.

The ICOM CI-V USB interface schematic typically consists of: icom ci v usb interface schematic top

To build a DIY Icom CI-V USB interface, you typically use a (like those based on the CP2102 or FT232 chips) combined with a simple circuit to merge the separate TX and RX lines into the single-wire bidirectional CI-V bus. Interface Schematics & Visuals Core Circuit Design The DATA line is held HIGH (+5V) by a pull-up resistor

This is the most popular "top" schematic for its simplicity and reliability. For decades, Icom’s protocol has been the backbone

For decades, Icom’s protocol has been the backbone of computer control for Icom transceivers. Whether you own an IC-7300, IC-9700, IC-705, or a legacy unit like the IC-706, the ability to link your radio to logging, digital mode, and remote control software transforms your operating experience.

Below is a functional block diagram of the classic, proven “top-level” CI-V USB interface. Hundreds of online projects and commercial products (like the CT-17 or U5 Linker) follow this design.

Building a USB to Icom CI-V interface is a popular homebrew project that allows you to control your transceiver via a computer. The core requirement is a bridge that converts bi-directional, single-wire TTL signaling ) used by the Icom CI-V protocol Top Interface Design Options USB-to-UART Module Method (Easiest)