Icom Ci V Usb Interface Schematic Top !!link!!

In this design, a USB-to-UART bridge chip (like the FTDI FT232RL, CP2102, or CH340E) replaces the traditional RS-232 transceiver. The schematic shows the bridge chip's TX and RX pins connected directly to the custom bus driver circuit, eliminating the need for an extra RS-232 level shipper. This is the most modern and efficient design.

Highly recommended due to robust driver support across Windows, macOS, and Linux. It outputs clean TTL levels and features onboard EEPROM. icom ci v usb interface schematic top

Keep the traces from the 3.5mm jack to the optocouplers as short as possible to limit the collection of stray RF fields. In this design, a USB-to-UART bridge chip (like

Ground loops between a computer and a radio transceiver introduce significant RF noise, hum, and can potentially damage equipment during a lightning strike or power surge. Highly recommended due to robust driver support across