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
