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c6670中PA发送队列描述符堵塞的问题!急!



最近我的6670出现里的一个诡异的现象,一定概率情况下板子启动完成后,过一会PA的发送队列645会发生描述符堵塞的情况(之前能发送),出现该情况的时候我powerdown PA重新初始化PA也没用。请问什么情况下会引起该现象?谢谢~~~