Basys2_rm - Digilent Basys2 Board Reference Manual...

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Digilent Basys2 Board Reference Manual Revision: November 11, 2010 1300 Henley Court | Pullman, WA 99163 (509) 334 6306 Voice and Fax Doc: 502-155 page 1 of 12 Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners. Introduction The Basys2 board is a circuit design and implementation platform that anyone can use to gain experience building real digital circuits. Built around a Xilinx Spartan-3E Field Programmable Gate Array and a Atmel AT90USB2 USB controller, the Basys2 board provides complete, ready-to-use hardware suitable for hosting circuits ranging from basic logic devices to complex controllers. A large collection of on-board I/O devices and all required FPGA support circuits are included, so countless designs can be created without the need for any other components. Four standard expansion connectors allow designs to grow beyond the Basys2 board using breadboards, user-designed circuit boards, or Pmods (Pmods are inexpensive analog and digital I/O modules that offer A/D & D/A conversion, motor drivers, sensor inputs, and many other features). Signals on the 6-pin connectors are protected against ESD damage and short-circuits, ensuring a long operating life in any environment. The Basys2 board works seamlessly with all versions of the Xilinx ISE tools, including the free WebPack. It ships with a USB cable that provides power and a programming interface, so no other power supplies or programming cables are required. The Basys2 board can draw power and be programmed via its on-board USB2 port. Digilent’s freely available PC-based Adept software automatically detects the Basys2 board, provides a programming interface for the FPGA and Platform Flash ROM, and allows user data transfers (see www.digilentinc.com for more information). The Basys2 board is designed to work with the free ISE WebPack CAD software from Xilinx. WebPack can be used to define circuits using schematics or HDLs, to simulate and synthesize circuits, and to create programming files. Webpack can be downloaded free of charge from www.xilinx.com/ise/ . The Basys2 board ships with a built-in self-test/demo stored in its ROM that can be used to test all board features. To run the test, set the Mode Jumper (see below) to ROM and apply board power. If the test is erased from the ROM, it can be downloaded and reinstalled at any time. See www.digilentinc.com/Basys2 for the test project as well as further documentation, reference designs, and tutorials. Xilinx Spartan3E-100 CP132 VGA Port Platform Flash (config ROM) Settable Clock Source (25 / 50 / 100 MHz) Full Speed USB2 Port (JTAG and data transfers) 20 JA JB JC JD JTAG port I/O Devices PS/2 Port Pmod Connectors 4 4 4 4 8 bit color 2 32 Data port 100,000-gate Xilinx Spartan 3E FPGA Atmel AT90USB2 Full-speed USB2 port providing board power and programming/data transfer interface Xilinx Platform Flash ROM to store FPGA configurations 8 LEDs, 4-digit 7-segment display, 4 buttons, 8 slide switches
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Basys2_rm - Digilent Basys2 Board Reference Manual...

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