CP2112-EK Datasheet, PDF (9/14 Pages) Silicon Laboratories – Quick Start Guide

CP2112-EK
10. The Customization tab allows for programming the One-Time-Programmable (OTP) parameters of the
device. These parameters can only be programmed once and cannot be changed back to their default
values after being programmed. This tab has the same functionality as the CP2112SetIDs application
provided with the CP2112 software package. In order for these parameters to be sucessfully programmed,
a 4.7 µF capacitor must be connected between the VPP pin and ground. This capacitor is populated by
default on the CP2112 Evaluation Kit board has this capacitor. See "8. Schematic" on page 12 for more
information.
a. The USB Customization section sets the USB parameters. Click Get to retrieve the current settings.
Change the settings by modifying the text boxes and checking the box next to the parameter being
modified. Click the Set button to program the device with the modified settings. The parameter will not
be changed without checking the corresponding box. Perform a Get after changing any parameters to
ensure that the settings updated correctly.
n. The String Descriptors section enables modification of the serial strings in the CP2112. Type a string into the
corresponding text box and click the Set button to modify the strings. Perform a Get after changing any parameters
to ensure that the settings updated correctly.
o. The Lock Byte section displays which fields have been programmed and can lock fields to prevent future
modification. Any field that has been programmed will not be checked. To prevent a field from being programmed,
uncheck the corresponding box and click the Set button. Perform a Get after changing any parameters to ensure that
the settings updated correctly.
10a
10c
10b
Figure 8. Customizing a CP2112 Device using the Example Application
Rev. 0.3
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