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你好:
我司目前使用pci2050b设计了pci 扩展板,如下图,中间ic就是pci2050b,ic左边的7个槽就是pci2050b扩展的7个槽位,ic右边的7个槽位系统本身自带的槽位,最右边是系统槽,
目前插上系统板,不能开机,测量p_clk位33m,正常,p_rst位高也正常,s_clk0~9位33m,也正常,但是p_rst为低,不正常。但是如果不焊接中间pci2050b,就正常了。下图是原理图,麻烦分析一下:我的电话:15502984675