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AR# 37482

Virtex-5 FPGA Fallback feature with the XCFP PROM devices may not always behave as expected

Description

With XCFP PROM devices, the Virtex-5 FPGA Fallback feature is not supported. What is the reason for this?

Solution

RS pins sample on the Falling edge of INIT and the RS pins are set on the Rising edge of INIT. So, there is a potential timing issue with when the RS pins get sampled versus when the REV_SEL pins with the Platform Flash.
AR# 37482
Date Created 12/21/2010
Last Updated 02/23/2013
Status Active
Type General Article
Devices
  • Platform Flash
  • Virtex-5 FXT
  • Virtex-5 LX
  • More
  • Virtex-5 LXT
  • Virtex-5 SXT
  • Virtex-5 TXT
  • Virtex-5Q
  • Virtex-5QV
  • Less