VSC8502 Reference Board
VPPD-03822 VSC8502 User Guide Revision 1.0
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3.6
Software Interface Microcontroller Card
The VSC8502RD or VSC8502RD-VR is powered by plugging in a USB cable to the board and to a PC. For
the VSC8502RD board, there are three on-board regulators that will convert the 5 V supplied by the PC
to 1.0 V and 2.5 V for the VSC8502 and 3.3 V for other devices. For the VSC8502RD-VR board, there is
only one on-board regulator that will convert the 5 V supplied by the PC to 3.3 V for the VSC8502’s
internal voltage regulators, VSC8502’s 3.3 V digital supplies, as well as other devices. A board will draw
less than 350 mA from the USB port.
