AN144 Datasheet, PDF (4/30 Pages) Silicon Laboratories – DEVICE CUSTOMIZATION GUIDE

AN144
When CP210xSetIDs.exe is launched, the program searches the Windows registry for any CP210x devices
attached to the PC. The full path information for all of the devices found is inserted into the “Select Device” drop-
down list, and the first device is selected automatically. CP210xSetIDs.exe then queries information from the
selected device using the CP210x Host API functions and fills in the values for each of the seven selectable fields
of the application. When a new device is selected from the list, the fields will be updated with information from the
most recently selected device.
To change one or more of the values, click on the checkbox to the left of the field and enter the new value. Once
the new values have been entered, click on the “Program Device” button.
The values entered are subject to the following limitations:
1. VID—Four hexadecimal digits.
2. PID—Four hexadecimal digits.
3. Max. Power—Two hexadecimal digits with maximum setting of 250 (the value is in 2 mA units).
4. Serial Number—Any sequence of up to 63 characters (CP2101/2/3/4) or 16 characters (CP2105).
5. Product String—Any sequence of up to 126 characters (CP2101/2/3/4) or 47 characters (CP2105).
6. Release Version—Each field is a decimal number value 0–99.
7. Flush Buffers—Selects which buffers to empty upon the Open and Close events. Applies to CP2104/5 devices
only.
8. Interface 0 and 1 Strings—Any sequence of up to 32 characters. Applies to CP2105 only.
9. Device Mode—Selects the operating mode for the Enhanced and Standard interfaces. Applies to CP2105 only.
Notes:
1. Avoid connecting more than one device containing the same VID, PID, and serial number combination.
2. When the serial number of a CP210x device is changed and the device is reset by calling the Host API function
CP210x_Reset(), the device will reenumerate, and the device driver will be installed.
3. The serial number and product string are automatically converted to Unicode strings before programming.
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Rev. 2.0