1300 Henley Court Pullman, WA 99163 509.334.6306 www.digilentinc.com Basys 3 FPGA Board Reference Manual Revised April 8, 2016 This manual applies to the Basys 3 rev. C Overview The Basys 3 board is a complete, ready-to-use digital circuit development platform based on the latest Artix-7 Field Programmable Gate Array (FPGA) from Xilinx. With its high-capacity FPGA (Xilinx part number XC7A35T- 1CPG236C), low overall cost, and collection of USB, VGA, and other ports, the Basys 3 can host designs ranging from introductory combinational circuits to complex sequential circuits like embedded processors and controllers. It includes enough switches, LEDs, and other I/O devices to allow a large number of designs to be completed without the need for any additional hardware, and enough uncommitted FPGA I/O pins to allow designs to be expanded using Digilent Pmods or other custom boards and circuits. The Artix-7 FPGA is optimized for high performance logic, and offers more capacity, higher performance, and more resources than earlier designs. Artix-7 35T features include: 33,280 logic cells in 5200 slices (each slice contains four 6-input LUTs and 8 flip-flops) 1,800 Kbits of fast block RAM Five clock management tiles, each with a phase-locked loop (PLL) 90 DSP slices Internal clock speeds exceeding 450MHz On-chip analog-to-digital converter (XADC) The Basys 3. The Basys 3 also offers an improved collection of ports and peripherals, including: 16 user LEDs 5 user pushbuttons 16 user switches Three Pmod ports Pmod for XADC signals 4-digit 7-segment display USB-UART Bridge Serial Flash 12-bit VGA output USB HID Host for mice, keyboards Digilent USB-JTAG port for and memory sticks FPGA programming and communication The Basys 3 works with Xilinx s new high-performance Vivado Design Suite. Vivado includes many new tools and design flows that facilitate and enhance the latest design methods. It runs faster, allows better use of FPGA resources, and allows designers to focus their time evaluating design alternatives. The System Edition includes an on-chip logic analyzer, high-level synthesis tool, other cutting-edge tools, and the free WebPACK version allows Basys 3 designs to be created at no additional cost. Copyright Digilent, Inc. All rights reserved. DOC : 502-183 Page 1 of 19 Other product and company names mentioned may be trademarks of their respective owners. Basys 3 FPGA Board Reference Manual 12 11 10 9 16 15 14 13 1 8 2 2 7 3 2 6 4 5 Figure 1. Basys 3 FPGA board with callouts. Callout Component Description Callout Component Description 1 Power good LED 9 FPGA configuration reset button 2 Pmod port(s) 10 Programming mode jumper 3 Analog signal Pmod port (XADC) 11 USB host connector 4 Four digit 7-segment display 12 VGA connector 5 Slide switches (16) 13 Shared UART/ JTAG USB port 6 LEDs (16) 14 External power connector 7 Pushbuttons (5) 15 Power Switch 8 FPGA programming done LED 16 Power Select Jumper Table 1. Basys 3 Callouts and component descriptions. A growing collection of board support IP, reference designs, and add-on boards are available on the Digilent website. See the Basys 3 page at www.digilentinc.com for more information. 1 Power Supplies The Basys 3 board can receive power from the Digilent USB-JTAG port (J4) or from a 5V external power supply. Jumper JP3 (near the power switch) determines which source is used. All Basys 3 power supplies can be turned on and off by a single logic-level power switch (SW16). A power-good LED (LD20), driven by thepower goo output of the LTC3633 supply, indicates that the supplies are turned on and operating normally. An overview of the Basys 3 power circuit is shown in Fig. 2. Copyright Digilent, Inc. All rights reserved. Page 2 of 19 Other product and company names mentioned may be trademarks of their respective owners.