REVISION A 05/13/15
3
VERSACLOCK
®
5 - 5P49V5935/33 Evaluation Boards
Figure 2. Jumping to the VDDD_J side will select external bench power supply; Jumping to the VDD_REG
side will select power source from on-board regulators powered by USB
• Output Clock Voltages
Like VDDA and VDDD having two sources, each output voltage VDDO0~4 is also provided with two sources to choose from:
bench power supply or powered from USB. The selection is made by a 4-way header as shown in Figure 3 below. Jumping to
VDDO_J will select external power supply (JP15 and JP16 are connected to external power supply); Jumping to 1.8V, 2.5V or
3.3V will select each respective voltage from on-board voltage regulators powered by USB port.
Please note:
each output voltage can be individually selected. Use the label on the evaluation board: VDDO_0 for OUT0,
VDDO_1 for OUT1, VDDO_2 for OUT2, VDDO_3 for OUT3, and VDDO_4 for OUT4 (5P49V5933 has only two outputs –
OUT1/OUT1B and OUT2/OUT2B whereas, 5P49V5935 has 4 outputs – OUT1/OUT1B, OUT2/OUT2B, OUT3/OUT3B and
OUT4/OUT4B).
Figure 3. Use the jumper to select a voltage for OUT3: 1.8V/2.5V/3.3V is from on-board voltage regulators
powered by USB; VDDO_J is from external power supply connecting to JP15 and JP16
