CP2110 Datasheet, PDF (24/26 Pages) Silicon Laboratories – SINGLE-CHIP HID USB TO UART BRIDGE

CP2110
11. CP2110 Interface Specification and Windows Interface DLL
The CP2110 is a USB Human Interface Device (HID), and as most operating systems include native HID drivers,
custom drivers do not need to be installed. The CP2110 does not fit one of the standard HID device types, such as
a keyboard or mouse, and so any CP2110 PC application needs to use the CP2110’s HID specification to
communicate with the device. The low-level HID specification for the CP2110 is provided in “AN434: CP2110/4
Interface Specification.” This document describes all of the basic functions for opening, reading from, writing to,
and closing the device as well as the ROM programming functions.
A Windows DLL that encapsulates the CP2110 HID interface and also adds higher level features such as read/
write time-outs is provided by Silicon Labs. This DLL is the recommended interface for the CP2110. The Windows
DLL is documented in CP2110 Windows DLL Specification.
Both of these documents and the DLL are available in the CP2110EK CD as well as online at
http://www.silabs.com/.
12. Relevant Application Notes
The following Application Notes are applicable to the CP2110. The latest versions of these application notes and
their accompanying software are available at
http://www.silabs.com/products/mcu/Pages/ApplicationNotes.aspx.
 AN721: CP21xx Device Customization Guide. This application note describes how to use the AN721
software CP21xxCustomizationUtility to configure the USB parameters on the CP2110 devices.
 AN434: CP2110/4 Interface Specification. This application note describes how to interface to the CP2110
using the low-level, HID Interface.
 AN433: CP2110/4 HID to UART API Specification. This application note describes how to interface to the
CP2110 using the Windows Interface dll and the Mac OS X dylib.
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