Icom Ci V Usb Interface Schematic Top

If using an isolator, draw a physical keep-out zone across all layers of the PCB beneath the isolation IC. No copper traces, ground planes, or vias should cross this line. Aim for at least an 8mm clearance gap.

This is the heart of the interface. Its job is to merge the TX and RX paths onto a single bidirectional line. A robust and common design for this is based on an open-collector bus driver. icom ci v usb interface schematic top

The connection to the radio's Tip is made from this junction. If using an isolator, draw a physical keep-out

[USB Port] -> [FT232RL] -> [TX/RX] -> [Transistor Inverter] -> [3.5mm Jack] Use code with caution. FTDI Chip: FT232RL handles USB to TTL serial. This is the heart of the interface

The Icom CT-17 is the gold-standard interface. It served a single purpose: to act as a level converter between an RS-232 COM port and the CI-V bus, providing the necessary TTL signaling and bus driving capability. The CT-17 contains a simple circuit that:

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)