Tutorial - Using Xilinx System Generator 13.2 for Co-Simulation on ...

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• ISE 14.6• <strong>System</strong> <strong>Generator</strong> 14.6• MATLAB R2007 with Simulink.Besides the following is required to complete this tutorial:• Familiarity with Simulink <strong>Simulation</strong> Environment with MATLAB.• Familiarity with <strong>Xilinx</strong> ISE and FPGA design flow.• NEXYS3 (Spartan-6) Board and Digilent USB JTAG download cable2 Starting <strong>System</strong> <strong>Generator</strong>• To Start <strong>Xilinx</strong> <strong>System</strong> <strong>Generator</strong>, select Start → All Programs → Development → <strong>Xilinx</strong>ISE Design Suite 14.6 → <strong>System</strong> <strong>Generator</strong>→ <strong>Xilinx</strong> <strong>System</strong> <strong>Generator</strong> 14.6.• This will start MATLAB and Simulink simulation environment as shown in Figure 1.Figure 1: Simulink and MATLAB• The Simulink library browser shows a list of all the different Toolboxes installed within MATLAB.<strong>Xilinx</strong> <strong>System</strong> <strong>Generator</strong> components will appear under three categories:1. <strong>Xilinx</strong> Blockset2. <strong>Xilinx</strong> Reference Blockset3. <strong>Xilinx</strong> XtremeDSP KitThe category <strong>Xilinx</strong> Blockset contains all the basic blocks used in various number of applicationsand will be used in this tutorial.• Create a new Simulink model by selecting File → New → Model.2
3 Creating a DSP systemIn this part of the tutorial we will create a simple DSP system that will be used to evaluate Equation 1:The main operations required to implement this system are:• Two multiplication operations.• One addition operation.z = (5 × x) + (3 × y) (1)• Two storage elements to store the factors (5, 3). In this tutorial we will use a constant block <strong>for</strong>these two factors.For each of these operations a <strong>System</strong> <strong>Generator</strong> Block exists. Besides, any <strong>System</strong> <strong>Generator</strong> modelrequires a <strong>System</strong> <strong>Generator</strong> block to per<strong>for</strong>m various hardware operations on the model.3.1 Building the Hardware ModelFor the new model created in Section 2 we will place several block from the <strong>System</strong> <strong>Generator</strong> Blocksetcategory in Simulink library browser:• <strong>Xilinx</strong> <strong>System</strong> <strong>Generator</strong> Block: The first block to be used in any <strong>System</strong> <strong>Generator</strong> model isthe <strong>System</strong> <strong>Generator</strong> Block. This block can be found in the following Simulink category: <strong>Xilinx</strong>Blockset→Basic Elements→<strong>System</strong> <strong>Generator</strong>. Place the <strong>System</strong> <strong>Generator</strong> block in the newmodel window as shown in Figure 2.Figure 2: Creating a new Design• Input/Output Gateways: are <strong>System</strong> <strong>Generator</strong> blocks that are used to convert data receivedfrom Simulink in the floating point <strong>for</strong>mat to fixed point <strong>for</strong>mat used inside the hardware systemmodeled using <strong>System</strong> <strong>Generator</strong>. Later, they convert the system output back to floating point.There are two types of gateways provided by <strong>System</strong> <strong>Generator</strong>:3
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Tutorial - Using Xilinx System Generator 13.2 for Co-Simulation on ...

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