REVISION C 09/29/14
3
82P33731/33831 EVALUATION BOARD
•
5VDC Power Jack –
If AC/DC power source is not used, a 5VDC power source can be plugged into the jack to power the
board. Please note: Power Jacks labeled 3.3V and 1.8V are for other purposes. They can be left unused.
•
5VDC Ground Jack –
Paired with 5VDC Power Jack (above) to provide power return when 5VDC bench power supply is
used.
Board Power Supply
There are two ways to power up the board:
•
Use an AC/DC adapter which provides 5VDC to on-board voltage regulators to generate 3.3V and 1.8V.
•
Connect a 5VDC power source (i.e., a bench power supply) to the power jack that is labeled s “5V”.
There are power jacks labeled 3.3V and 1.8V. Do not use them to power the board. They are connected to the output of 3.3V
and 1.8V voltage regulators powered by either J54 or the 5VDC power jack. They can be supplied with 3.3V and 1.8V to power
the board but only if 5V is not supplied. They are used for testing purposes only; it is not recommended to use them.
USB connector is only used for communicating with the PC running Timing Commander. It is not used to provide any power
source for the board. When plugged in to PC's USB port, a green LED is lit.
Connecting the Board to PC and Power
Other than input and output cables, the only connection you need to make to operate the board is a USB cable connecting to a
PC USB port, and a power supply connection (either an AC/DC adapter or a 5VDC power source, as described above). See
Figure 2
below for different powering options.
Figure 2. Connecting the Board to the Power Supply and USB Port
