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Other Parts Discussed in Thread: AM3358, TS12A44514

你好,我参考Beaglebone black原理图做了一块板,删掉USB Host, Ethernet, HDMI,其余皆一样,但我将LCD_DATA6至13再接到SPST CMOS IN (TS12A44514)。上电时将LCD_DATA2接地预使CPU(AM3358)读uSD,但CPU似乎没动作,USR LED没亮,然而POWER LED有亮。测量AM3358 C6 pin有1.8V电位。可请问AM3358为何没读uSD??