2
AVR1921
8301A-AVR-04/10
2 Reprogramming the firmware
2.1 Powering the Xplain board
Power the Xplain kit by connecting it to a PC host or a USB power adapter. The
Xplain USB connector is the mini-B type used for most portable products today.
Figure 2-1.
Xplain connectors
If connecting the Xplain kit to a PC, you might be required to install the Xplain USB
driver the first time it is connected. Please find the install file in the /software/USB
driver/ folder of the zip file distributed with this application note
(
0
http://www.atmel.com/avr/
). Select the driver corresponding to the
Xplain/AT90USB1287 firmware revision used. You will find the revision ID on the
back side of the Xplain as shown in Figure 2.2b. It is possible to replace the
AT90USB1287 firmware of a revision 1 kit with later firmware, in that case it is
required to uninstall the USB driver and install the new driver.
