to open the New Source Wizard dialog box. Create a New Source FileĬlick Project → New Source. We now need to add a VHDL source file to the project and then add the VHDL code to the file that will connect the switches on the CPLD to the LEDS. Click the button below to make a donation. You can help the Starting Electronics website by making a donation:Īny donation is much appreciated and used to pay the running costs of this website. Finding the Speed Grade on a Xilinx CPLDĬlick Next button and you will be shown a summary of the project settings. a CPLD with a speed grade of 7 has a 7.5ns pin-to-pin delay, and a CPLD with a speed grade of 5 has a 5ns pin-to-pin delay. The smaller the speed grade number, the faster the CPLD – e.g. The speed grade can be found on the CPLD package as shown below, which shows a CPLD with a speed grade of 7 (hence -7 is selected in the dialog box). Selecting the Project Settings Setting the Speed Parameter See below for information on how to select the Speed parameter. Choose VHDL as the preferred language for this example. If using the home built CPLD board, then select the XC9536XL device. Starting a New Xilinx ISE Project - click for a bigger image Complete the New Project Wizardįill in the project settings for the device and language to be used. Select the desired location of the new project and then fill in the name of the new project as shown below. This will open the New Project Wizard dialog box. button as shown below or by clicking File → New Project. Start a new project by clicking the New Project. Starting a New Project in ISE Start the ISE Design Suite SoftwareĮither start the software from the desktop icon or find it on the Windows menu as shown in this image: Starting the Xilinx ISE Software Start a New Project See a short video on what the VHDL code does at YouTube. The software used in this project is Xilinx ISE WebPACK Design Suite 14.2 running on Windows 7. The example uses the home built CPLD board which contains a XC9536XL CPLD and the home built parallel cable. The example simply connects inputs (a bank of 8 switches interfaced to CPLD pins) to outputs (8 LEDs interfaced to CPLD pins) within the CPLD.
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