LFE5UM-85F-PB-EVN Lattice

ECP5 PCI Express Board Users Guide July 2014 EB91 1.0ECP5 PCI Express Board Users 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 users guides to demonstrate the ECP5 FPGA. Figure 1. ECP5 PCI Express Board, Top Side Expansion Connector/Header Expansion Connector/Header On-Board Clock Management RJ45 12 V DC Power Input Connections Configuration Device Selection Switches Configuration Switches LPDDR3 USB Programming SPI Flash Configuration PMOD Switches Memory Status LEDs PMOD Connector PCI Express x4 User Switches 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 users 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. 2