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一块6U板卡上需要3个ucd9248，请问如果控制3个ucd9248的上电顺序，有FPGA顺序上电，但不知道怎么连接，请指点下
亲；建议用FLT脚逻辑控制各路输出时序。
多片ucd9248之间和FPGA之间控制上电的接法，比如说SEQ引脚怎么用，亲，用过吗，我这里用到3个ucd9248
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