2. 技术支持
  3. AR# 41555: 13.1 iMPACT - SVF files do not use "STATE RESET" for Virtex-6

AR# 41555

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13.1 iMPACT - SVF files do not use "STATE RESET" for Virtex-6

描述

The Virtex-6 FPGAstatus read sequence included a STATE RESET line between the read of the STAT register and BOOTSTS register. This STATE RESET is not applied in 13.1. This can cause SVF failures on JTAG chains with more than one device in the JTAG chain. How do I work around this issue?

解决方案

To work around this issue you can make the following changed to the SVF file commands -

From

// reading the bootsts register contents.
// Loading device with a 'cfg_in' instruction.
// Loading device with a 'cfg_in' instruction.
SIR 10 TDI (03c5) ;
SDR 320 TDI (0000000400000004b00000008001000c0000000400000004800340140000000466aa9955ffffffff) SMASK (ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) ;
// Loading device with a 'cfg_out' instruction.
SIR 10 TDI (03c4) ;
SDR 32 TDI (00000000) SMASK (ffffffff) TDO (00000000) MASK (1f000000) ;

To

// reading the bootsts register contents.
// Loading device with a 'cfg_in' instruction.
// Loading device with a 'cfg_in' instruction.
SIR 10 TDI (03c5) ;
SDR 320 TDI (0000000400000004b00000008001000c0000000400000004800340140000000466aa9955ffffffff) SMASK (ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) ;
// Loading device with a 'cfg_out' instruction.
SIR 10 TDI (03c4) ;
SDR 32 TDI (00000000) SMASK (ffffffff) TDO (00000000) MASK (1f000000) ;
STATE RESET;

This issue is resolved in 13.2.

链接问答记录

主要问答记录

Answer Number 问答标题 问题版本 已解决问题的版本
40503 13.x iMPACT - Known Issues for the iMPACT 13.x Software N/A N/A
AR# 41555
日期 12/15/2012
状态 Active
Type 综合文章
器件 More Less
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