In some long-reach high-density wires such as flexible flat cables, the crosstalk signal from the aggressor to the victim lanes exhibits the time shift that depends on the cables. This paper proposes a far-end crosstalk (FEXT) cancellation method with controllable injection timing of the crosstalk cancellation (XTC) signals into the victim lanes. The proposed method uses a delay-line-based digital-to-time converter for delay tuning and generates the XTC signals at the transmitter, then inject it to cancel the FEXT effectively on these cables. The proposed XTC circuit is implemented in the differential transmitter so that the XTC signal is generated from the digital data signal from the aggressor. The transmitter circuit with the proposed XTC technique is designed in a 40 nm bulk CMOS process, and its feasibility is verified through the post-layout simulation at a data rate of 16 Gb/s.

在某些长距离高密度电线（例如柔性扁平电缆）中，从攻击者到受害车道的串扰信号表现出取决于电缆的时移。本文提出了一种远端串扰（FEXT）消除方法，该方法具有可控制的将串扰消除（XTC）信号注入受害者通道的注入定时。所提出的方法使用基于延迟线的数字时间转换器进行延迟调整，并在发送器处生成XTC信号，然后将其注入以有效抵消这些电缆上的FEXT。所提出的XTC电路是在差分发射机中实现的，因此XTC信号是根据来自攻击者的数字数据信号生成的。采用建议的XTC技术的发射器电路是在40 nm体CMOS工艺中设计的，