User Guide

4.2 USBXpress Driver
An alternative driver is the USBXpress® direct-access driver, which is also available on the Silicon Labs website (www.silabs.com/inter-
face-software). Rather than appearing as a COM port, software can use a simple, high-level Application Program Interface (API) to pro-
vide access to CP2102N for complete USB connectivity. No USB protocol or host device driver expertise is required. The USBXpress
Development Kit includes Windows device drivers, Windows device driver installer, and host interface function library (host API) provi-
ded in the form of a Windows Dynamic Link Library (DLL). See Application Note AN169: USBXpress Programmer’s Guide for detailed
information on using the USBXpress drivers.
If the USBXpress drivers are used, the CP2102N will appear as a USB USBXpress device as shown in the figure below. Examples for
how to communicate with the device using the USBXpress interface are included in AN169: USBXpress Programmer’s Guide.
Figure 4.2. CP2102N in Device Manager — USBXpress
UG205: CP2102N-EK Kit User's Guide
Driver Options and Software Interface
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