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请教专家/工程师
我选用2812DSP外扩了一片RAM,并且选择了外扩存储区域6,片选信号XCS6AND7必须为低电平有效,请教专家/工程师不知这个信号如何控制或者设置?
另外,2812 DSP的写使能引脚XWE,读使能引脚XRD如何设置的?
谢谢!