AR# 43541

描述

The MIG Spartan-6 MCB design includes two output designs; the Example Design and User Design. The Example Design includes sample logic to drive the user interface. This is called the Traffic Generator. The design sends sample writes, reads back the data, and compares the data to ensure accuracy. The design can be configured to send different types of data patterns to test for different types of problems. This Answer Record focuses on the Traffic Generator available with the MIG Spartan-6 MCB Example Design.

Note: This Answer Record is part of the Xilinx MIG Solution Center (Xilinx Answer 34243). The Xilinx MIG Solution Center is available to address all questions related to MIG. Whether you are starting a new design with MIG or troubleshooting a problem, use the MIG Solution Center to guide you to the right information.

解决方案

Xilinx recommends first running the Example Design in the hardware to confirm that there are no board or pin-out related issues. If the MIG design is used without modification and the provided PCB Layout Guidelines are followed, no issues should be seen in hardware with the Example Design. For additional information, see the following Answer Records:

• (Xilinx Answer 43318) Verify Pin-Out and Requirements
• (Xilinx Answer 40775) Board Layout Requirements

The Traffic Generator, by default, sends an address as a data pattern. However, the design can be configured to send many different types of data patterns like a Hammer pattern to test for SSO or a PRBS pattern. For full details on the Traffic Generator and available data patterns, see the Getting Started >MIG Example Design with Traffic Generator (CORE Generator Tool Native Interface Only) section of UG416. This section also explains how to change the data pattern for simulation.

Addressing

The Traffic Generator includes four parameters that control the address space that will be tested in the traffic generator.

• BEGIN_ADDRESS
• END_ADDRESS
• PRBS_SADDR_MASK_POS
• PRBS_EADDR_MASK_POS

The BEGIN/END_ADDRESS parameters define the address space to be tested. The PRBS_S/EADDR_MASK_POS parameters are used to mask off any bits that are outside the address range. Any bits above or below your defined address range should be masked off using the PRBS parameter. Following is example:

localparam C4_p0_BEGIN_ADDRESS = 32'h00000400;
localparam C4_p0_END_ADDRESS = 32'h000007ff;
localparam C4_p0_PRBS_EADDR_MASK_POS = 32'hfffff800;
localparam C4_p0_PRBS_SADDR_MASK_POS = 32'h00000400;

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