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AR# 7640

CPLD XPLA1 - The XPLA fitter does not allow a pin associated with an asynchronous clock to be used as a standard I/O

説明

My fitter does not allow me a pin associated with an asynchronous clock signal to be used as a standard I/O. Why?

ソリューション

If an asynchronous global clock is driven by an internal product term expression, the global clock pin associated with this clock is driven by the output macrocell. This excludes the use of the pin for any other function.

AR# 7640
作成日 08/21/2007
最終更新日 05/14/2014
ステータス アーカイブ
タイプ 一般