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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/616893/tlk1221-serdes-signal-failures
TLK1221在回送模式下工作查找：输入TD0~TD9将按设计的方式传递到RD0~RD9。但是，它是两个芯片连接在一起，在接收芯片中的RD0~RD9 将在 传输端显示来自TD0~TD9的不同信号，这可能是什么原因？
