selectMap使用方法.docVIP

Introduction to SelectMAPSelectMAP Mode FunctionsSelectMAP configuration mode enables you to program up to three Xilinx? devices and allows parallel reading and writing through byte-wide ports. The devices are programmed one at a time and are selected by the assertion of the correct CS pin. An external clock source, such as a microprocessor, download cable, or other FPGA, is required. The data is loaded one byte per CCLK pulse.This mode is supported by Virtex? and some Spartan? families and typically used as a configuration mode when configuration speed is an important factor.Note??Only the MultiPRO cable can be used for SelectMAP configuration.Creating the SelectMAP ChainTo Create the SelectMAP Chain?Select?Edit Add Device Add Xilinx Device, or right-click in the graphical view and select?Add Xilinx Device. ?In the? HYPERLINK /itp/xilinx10/isehelp/pim_db_dlg_open.htm Add Device dialog box, select a folder and a bit file (.bit) or raw bit file (.rbt) for the target FPGA(s). Note??iMPACT does not support programming SelectMAP daisy chain configuration which is available on Virtex-5 FPGAs.The selected file is assigned to the device.Note?Save the iMPACT Project file or? HYPERLINK /itp/xilinx10/isehelp/pim_p_configuring_selectmap.htm begin configuring devices using SelectMAP mode.Troubleshooting the SelectMAP ConfigurationWhen programming fails, the most common error message reads:DONE pin did not go high. Programming terminated due to error.Programming failed.The above error message can occur for many reasons. Below are some of the common causes:?The Mode pins on the device are not set to SelectMAP mode ?One or more of the SelectMAP signals are not connected properly ?The wrong CS pin is connected to the device ?Noise is corrupting CCLK or the DATA lines ?The hardware is not set up properly ?The wrong configuration file was applied to the device iMPACT OverviewiMPACT, a tool featuring batch and GUI operations, allows you to perform the following functions: Device Con