2
ECP5 PCI Express Board User’s Guide
Introduction
The ECP5™ PCI Express Board allows designers to investigate and experiment with the features of the ECP5
Field-Programmable Gate Array. The features of the ECP5 PCI Express Board can assist engineers with rapid pro-
totyping and testing of their specific designs. The guide is intended to be referenced in conjunction with demo
user’s guides to demonstrate the ECP5 FPGA.
Figure 1. ECP5 PCI Express Board, Top Side
Features
• PCI Express form-factor
– Allows demonstration of PCI Express x4 interconnection
• USB-B connection for UART and device programming
• One RJ45 interfaces to 10/100/1000 Ethernet to RGMII
• On-board Boot Flash
– 128M Serial SPI Flash
• 8GB LPDDR3 memory components (256Mbx32)
• Expansion connections and headers
– Allows flexibility for user prototype expansion
• Switches, LEDs and displays for demo purposes
• Lattice Diamond
®
Programmer configuration support
• On-board reference clock sources
• Easy power measurements
– All ECP5 rails have probable power resistors
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.
RJ45
Connections
LPDDR3
SPI Flash
Configuration
Memory
On-Board Clock
Management
12 V DC Power Input
Configuration Device
Selection Switches
Configuration Switches
USB Programming
PMOD Switches
Expansion Connector/Header
Expansion Connector/Header
Status LEDs
PMOD Connector
User Switches
PCI Express x4
