CP2112EK Silicon Laboratories Inc, CP2112EK Datasheet - Page 18

• Manufacturer Part Number: CP2112EK
• Description: KIT EVAL FOR CP2112
• Manufacturer: Silicon Laboratories Inc

Specifications of CP2112EK

• Main Purpose: Interface, USB 2.0 to SMBus Bridge
• Embedded: No
• Utilized Ic / Part: CP2112
• Primary Attributes: Full Speed (12Mbps)
• Secondary Attributes: LED Status Indicators
• Interface Type: USB
• Operating Supply Voltage: 3.3 V
• Product: Interface Development Tools
• For Use With/related Products: CP2112
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 336-2010

CP2112
10. CP2112 Interface Specification and Windows Interface DLL
The CP2112 is a USB Human Interface Device (HID), and, since most operating systems include native drivers,
custom drivers do not need to be installed. Because the CP2112 does not fit a standard HID device type, such as a
keyboard or mouse, any CP2112 PC application needs to use the CP2112’s HID specification to communicate with
the device. The low-level HID specification for the CP2112 is provided in “AN495: CP2112 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 CP2112 HID interface and also adds higher level features, such as read/
write timeouts is provided by Silicon Labs. This DLL is the recommended interface for the CP2112. The Windows
DLL is documented in CP2112 Windows DLL Specification.
Both of these documents and the DLL are available in the CP2112EK CD as well as online at
http://www.silabs.com/.
11. Relevant Application Notes
The following Application Notes are applicable to the CP2112. The latest versions of these application notes and
their accompanying software are available at
http://www.silabs.com/products/mcu/Pages/ApplicationNotes.aspx.
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AN144: CP21xx Device Customization Guide—describes how to use the AN144 software CP2112SetIDs to
configure the USB parameters on the CP2112 devices.
AN495: CP2112 Interface Specification—describes how to interface to the CP2112 using the low-level, HID
Interface.
AN496: CP2112 HID USB-to-SMBus API Specification—describes how to interface to the CP2112 using the
Windows Interface DLL.
Rev. 1.0