cp210x.ko
| Request Code | Direction | Purpose | |--------------|-----------|---------| | 0x00 | IN | Get firmware version / part number | | 0x01 | IN | Read latch of GPIO pins | | 0x02 | OUT | Write GPIO latch | | 0x03 | IN | Get baud rate divisor | | 0x04 | OUT | Set baud rate divisor | | 0x11 | OUT | Set line control (parity, stop bits, data bits) | | 0x12 | IN | Get line control | | 0x13 | OUT | Set break state | | 0x14 | IN | Get break state | | 0x1E | OUT | Set baud rate (direct in bps, preferred) | | 0x1F | IN | Get baud rate (bps) | | 0x20 | OUT | Set MCR (Modem Control Register) – controls DTR, RTS | | 0x21 | IN | Get MCR | | 0x22 | OUT | Set LCR (Line Control Register) – alternate method | | 0x23 | IN | Get LCR | cp2103 usb to uart bridge controller drivers
[Silabs.NTamd64] %DESCRIPTION%=DriverInstall, USB\VID_10C4&PID_EA60 To assign persistent names or group permissions: cp210x
Abstract The CP2103 is a highly integrated USB-to-UART bridge controller providing a simple solution for updating RS-232/RS-485 designs to USB using a minimal external component count. This paper examines the driver stack, operating system integration, virtual COM port (VCP) emulation, direct access via API, and low-level USB descriptors that govern driver behavior across Windows, Linux, and macOS. 1. Introduction The CP2103 (Silicon Labs, now part of Skyworks Solutions) is a member of the CP210x family. Unlike traditional UART controllers, it appears to the host as a self-contained USB device. No firmware development is required on the bridge; instead, the host OS loads a device driver that creates a virtual serial port. Introduction The CP2103 (Silicon Labs, now part of