Answers Database
Virtex Configuration: Toggling /WRITE during serial configuration (DONE does not go high)
Record #8022
Product Family: Hardware
Product Line: Virtex
Product Part: Virtex General Hardware
Problem Title:
Virtex Configuration: Toggling /WRITE during serial configuration (DONE does not go high)
Problem Description:
Urgency: Standard
General Description: Is there a problem when WRITE is toggled during a Virtex serial configuration?
Solution 1:
A problem will only occur if the following conditions are all met:
1. The /CS and ?WRITE lines are both used as user I/O's after configuration
2. /CS is low during configuration
3. /WRITE toggles during configuration
If all of these conditions are met, configuration will fail and DONE will not go high. Toggling PROG
and reloading configuration without one of the above conditions will result in a successful
configuration.
End of Record #8022 - Last Modified: 01/11/00 10:17 |
