Latticeecp2M Device; Applying Power To The Board; Power Supplies - Lattice Semiconductor LatticeECP2M PCI Express x4 User Manual

LatticeECP2M PCI Express x4
Lattice Semiconductor Evaluation Board User's Guide
Figure 3. LatticeECP2M PCI Express x4 Evaluation Board, Top View
Additional Resources
For additional information and resources related to this board, including updated documentation and software
demos, please see the Lattice web site at: www.latticesemi.com/boards, and navigate to the appropriate page for
this board.
Lattice makes its best effort to provide evaluation board designs to help users with evaluation and development.
However it remains the user's responsibility to verify proper and reliable operation of Lattice products in their end
application by consulting documentation provided by Lattice. Differences in component selection and/or PCB layout
in the user's application may significantly affect circuit performance and reliability.

LatticeECP2M Device

This board features a LatticeECP2M FPGA with a 1.2V core supply. It can accommodate all pin compatible
LatticeECP2M devices in the 672-ball fpBGA (1mm pitch) package. A complete description of this device can be
found in the LatticeECP2M Family Data Sheet on the Lattice web site at www.latticesemi.com.
Note: The connections referenced in this document refer to the LFE2M35E-FF672 device. Available I/Os and asso-
ciated sysIO™ banks may differ for other densities within this device family. For example, only the LFE2M50E-
FF672 device allows full use of the high speed SERDES test SMAs and SMPTE BNC connections.

Applying Power to the Board

The LatticeECP2M PCI Express x4 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 sup-
ply 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 J1 and plug the wall transformer into an AC wall outlet.

Power Supplies

(see Appendix A, Figure 7)
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 for use with a bench top supply adjusted
to provide a nominal 12V DC.
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