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CP2112-EK Datasheet(PDF) 9 Page - Silicon Laboratories |
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CP2112-EK Datasheet(HTML) 9 Page - Silicon Laboratories |
9 / 14 page CP2112-EK Rev. 0.3 9 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. Figure 8. Customizing a CP2112 Device using the Example Application 10a 10b 10c |
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