Latticeecp3 Device; Applying Power To The Board; Programming/Fpga Configuration - Lattice Semiconductor LatticeECP3 Versa User Manual

The contents of this user's guide include top-level functional descriptions of the various portions of the evaluation
board, descriptions of the on-board connectors, diodes and switches and a complete set of schematics.
Caution: The LatticeECP3 Versa Evaluation Board contains ESD-sensitive components. ESD safe practices should
be followed while handling and using the evaluation board.

LatticeECP3 Device

This board features a LatticeECP3 FPGA with a 1.2V core supply. It can accommodate all pin-compatible
LatticeECP3 devices in the 484-ball fpBGA (1mm pitch) package. A complete description of this device can be
found in the LatticeECP3 Family Data
Note: The connections referenced in this document refer to the LFE3-35EA-8FN484C device.

Applying Power to the Board

The LatticeECP3 Versa Evaluation Board is ready to power on. The board can be supplied with power from a PCI
Express host system or standalone with an external wall power module.
The 12V DC input power source is fused with a surface mounted fuse, as noted in Table 1.
Table 1. Board Power Supply Fuses – (See Appendix B, Figure 12)
The board may be plugged into a host PC. Only plug the board into a PCI Express slot when the system is powered
off. Once inserted, the PC can be safely powered on.
Using the evaluation board outside of a PC chassis supply requires the factory-supplied wall supply module. Use of
other supplies is not suggested. GME Technology's GFP181DA-1215B-1 (or equivalent) is provided with the
LatticeECP3 Versa Development Kit.
Figure 2. Power Distribution Scheme – (See Appendix B, Figure 12)
12_0V
(5A fused)
Power Status LED D13

Programming/FPGA Configuration

The LatticeECP3 Versa Evaluation Board has a built-in download controller for programming the LatticeECP3
FPGA. The built-in module consists of a USB Type-B connector and a USB UART device. To use the built-in down-
load cable, simply connect a standard USB cable (a USB-B to USB-A cable is included with the LatticeECP3 Versa
Development Kit) from J2 to your PC (with ispVM System software installed). The USB hub on the PC will detect
the addition of the USB function, making the built-in cable available for use with the ispVM System software. The
USB cable is connected in parallel to J3.
Sheet.
Fuse Designator
F1 12V Input Supply Fuse
EN
LDO
2_5V, +2.5V, 1.1 A, Power Status LED D31
SW
EN
3_3V, +3.3V, 1.35 A, Power Status LED D9
SW
1_5V, +1.5V, 1.1 A, Power Status LED D11
SW
EN
VCC_CORE, +1.2V, 1.35 A, Power Status LED D10
SW
3
LatticeECP3 Versa Evaluation Board
Description
SERDES 1_2V, +1.2V, 1A, Power Status LED D12
User's Guide