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AR# 51337 7 Series - How can I work around the Fallback limitation for 32-bit addressing in SPI mode?

Description

In the 7 Series FPGAs Configuration User Guide v1.4 (UG470), there is a note indicating that fallback will not work with the 32-bit addressing mode:

"The MultiBoot and fallback feature can be used with all master configuration modes, except when the 32-bit addressing option is used with the master SPI configuration mode."

How can I work around this issue to use MultiBoot and Fallback on a SPI flash of 256 Mb or larger?

Solution

A fix has been implemented in ISE Design Suite BitGen 14.4 and Vivadowrite_bistream2012.4.This enables fallback to work correctly with a 256 Mb or largerflash and 32-bit addressing mode.

The7 Series FPGAs Configuration User Guide (UG470) will be updated in a future release.

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AR# 51337
Date Created 09/17/2012
Last Updated 02/20/2013
Status Active
Type General Article
Devices
  • Artix-7
  • Kintex-7
  • Virtex-7
Tools
  • ISE Design Suite - 13
  • ISE Design Suite - 14.1
  • ISE Design Suite - 14.2
  • More
  • ISE Design Suite - 14.3
  • Vivado - 2012.1
  • Vivado - 2012.2
  • Vivado - 2012.3
  • Less
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