Xilinx Spartan-3A Schematic page 5

Wall power adapter
input
Power switch
Voltage
regulators
2
I C Interface
2
I C Interface
www.national.com/pf/LP/LP3906.html
Spartan-3A/3AN Starter Kit Board
Voltage regulators
FPGA core
supply
(1.2V)
FPGA I/O
Bank 0 Banks 0, 1, 2
(3.3V)
FPGA
Bank 2
FPGA auxiliary
supply
(3.3V)
Embedded
USB / JTAG
Programmer
(1.8V)
FPGA
DDR2 SDRAM
Termination
(0.9V)
DDR2 SDRAM
Device, FPGA
I/O Bank 3
(1.8V)
DAC Reference
Voltage
(3.3V)
DDR2 SDRAM
Voltage Ref.
(0.9V)
TM