Applying Power To The Board; Power Supplies - Lattice Semiconductor LatticeSC PCI Express x1 User Manual

LatticeSC PCI Express x1
Lattice Semiconductor Evaluation Board User's Guide
Figure 3. LatticeSC PCI Express x1 Evaluation Board, Top View
LatticeSC Device
This board features a LatticeSC FPGA with a 1.2V core supply. It can accommodate all pin compatible LatticeSC
devices in the 900-ball fpBGA (1mm pitch) package. A complete description of this device can be found in the Lat-
ticeSC Family Data Sheet on the Lattice web site at www.latticesemi.com.
Note: The connections referenced in this document refer to the LFSCM3GA25EP1-XXF900 device. Available I/Os
and associated sysIO™ banks may differ for other densities within this device family.

Applying Power to the Board

The LatticeSC PCI Express x1 Evaluation Board is ready to power on. The board can be supplied with power from
an AC wall-type transformer power supply shipped with the board or it can be supplied from a bench top supply via
terminal screw connections. It also has provisions to be supplied from the PCI Express edge fingers from a host
board.
To supply power from the factory-supplied wall transformer, simply connect the output connection of the power cord
to J6 and plug the wall transformer into an AC wall outlet.

Power Supplies

(see Appendix A, Figure 6)
The evaluation board incorporates an alternate scheme to provide power to the board. The board is equipped to
accept a main supply via the TB1 connection. This connection is provided to use with a bench top supply adjusted
to provide a nominal 12V DC.
All input power sources and on-board power supplies are fused with surface mounted fuses and have green LEDs
to indicate power GOOD status of the intermediate supplies
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