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AR# 23708

Virtex-5/-4 Configuration - What should be done with RDWR_B and CS_B if the SelectMAP port is not being used?


On the Virtex-5 or Virtex-4 device, the RDWR_B and CS_B pins are dedicated configuration pins. When the SelectMAP port is not being used, what should be done with these pins?


If the user design will not be using the SelectMAP interface, these can be left unconnected or tied to ground. Tying the pins to ground will help reduce SSO noise in the device.

AR# 23708
Date Created 09/04/2007
Last Updated 12/15/2012
Status Active
Type General Article