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台架出现黑屏的问题,检查发现ds90ub948的EQ(0x3b)值为0x04,正常显示是EQ(0x3b)值为0, 其他功能配置与正常配置一样, link 状态也是正常的, 咨询一下, 通常情况下 正常工作时EQ值的范围时多少?