Alps Electric Virtual Cable Light Module - Manual (Page 5)

CONFIDENTIAL Rev 1.0
Copyright  2003 ALPS Electric Co. LTD.
“BLUETOOTH TM is a trademark owned by the Bluetooth SIG Inc, and licensed to ALPS
ELECTRIC Co. LTD”
3.3 Power Supply and Module Supply Switches
The user has 2 possible options to power the board. One is by using an external
voltage supply and the second option is to supply through the VBUS line of the
USB connector. It is also important for the user to note that for this type of board
2 types of modules may be mounted. Depending on what module is being used,
the “Module Volt.” switch must be set accordingly.
By referring to the above Figure, both switches and their roles will be explained.
3.3.1 Board Power Supply
If the hardware is to be powered over an external power supply, the switch must
be set in the up, “EXT” position. To power over USB, the user must simply
connect a USB cable from the PC directly to the FX778Z11b board. The switch
must then be set in the down, “INT (VBUS POWER)” position.
3.3.2 Module Power Supply
Currently only Class 1 modules are being delivered with the Virtual Cable Light
package. However the board also supports Class 2 modules. If the user is using
a Class 1 “UGPZ1” module, the switch must be set to the up, “5.0V” position. If
the module being used is a Class 2 “UGPZ2” module, the switch must be set in
the down, “3.3V” position.
3.4 Reset Switch
This switch can be pressed each time the user wants to put the module back into
a known or initial state.
The switch is located just to the right of the “Application Control” switch.