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JTAG - Is a bitsream generated for JTAG configuration the same as a bitsream for other configuration modes?


Record #5021

Problem Title:
JTAG - Is a bitsream generated for JTAG configuration the same as a bitsream for other configuration modes?



Problem Description:
Urgency: Standard

General Description:

Is a bit stream generated for JTAG configuration the same as a bit stream for other configuration modes such as select map or master serial?


Solution 1:

No, they are not the same. A bitsream created for a Virtex device that is to be configured via JTAG must be generated with at least one special option:

bitgen -g startupclk:jtagclk designName.ncd

This bitsream will not work when used for any other configuration mode. To use a mode other than JTAG, you will need to regenerate the bit stream.




End of Record #5021 - Last Modified: 01/20/00 17:28

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