CP2112-EK

Rev. 0.3

3

5. CP2112 Software Interface

The CP2112 is an HID device that uses the standard HID functions available in the operating system. To facilitate

this process in Windows, Silicon Labs packaged the standard HID functions into the SLABHIDDevice DLL in the

CP2112 software package. The HID report structure for the CP2112 is customized for the device and is not

compatible with other HID report structures, like a mouse or keyboard. AN495, “CP2112 Interface Specification”

describes the custom HID report structure for the CP2112, and AN496, “CP2112 HID-to-SMBus API Specification”

describes the API software functions that can be used to read or write data and control the CP2112 from the PC.

The software application described in “6. CP2112 Windows Application” provides an example of how to use these

functions.

The CP2112 appears as an HID device in Device Manager as shown in Figure 2.

Figure 2. CP2112 in Device Manager