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请教:F28M35的EPI,只简单的扩展,多余的管脚是否可以做他用?



想用F28M35设计一款嵌入式硬件,其中扩展的并口比较简单,8位即可,且地址线只需用3位即可,再加上读、写,最少用13个PIN即可。考虑外部用CPLD协助,所以打算用general-purpose模式来扩展。我的问题是:这样的扩展,我所用的信号13个管脚之外的PIN,是否可以设置他用?是不是也同时被EPI抢占了呢?

谢谢。