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JSSC 2011第9期RF & Wireless0.18umNeural Network Accelerator

A Single-Loop SS-LMS Algorithm With Single-Ended Integrating DFE Receiver for Mu

采用单环LMS算法的3.8 Gb/s单端积分DFE接收器,用于多通道DRAM接口。
0.18um CMOS, 3.8 Gb/s
DFE接收器LMS算法单端积分DRAM通道CMOS
创新点1:单环LMS算法自动确定DFE系数(方法创新)。该技术通过动态调整DFE系数,显著提升了信号完整性,在4-drop接口中将最大数据传输率从1.0 Gb/s提升至2.6 Gb/s,解决了传统手动校准的效率问题。
创新点2:芯片内生成参考电压以减少外部噪声影响(电路创新)。通过集成Vref环路,有效抑制了外部噪声和输入偏移电压的影响,同时能够跟踪输入数据摆幅的中间电平,适应不同工艺条件下的TX芯片变化。
创新点3:低开销积分去斜方案(系统创新)。该方案通过最小化硬件开销实现了时序偏差校正,在2-drop接口中将数据传输率从3.5 Gb/s提升至3.8 Gb/s,优化了系统整体性能。
创新点4:差分式IDFE电路校准机制(方法创新)。利用主IDFE电路和副本IDFE电路的输出差异进行DFE系数校准,提高了校准精度和鲁棒性,适用于多通道DRAM接口。
Abstract
A 3.8 Gb/s multi-drop sing le-ended integrating DFE (IDFE) receiver is implemented in a 0.18 um CMOS by using a single-loop LMS-algorithm to find the DFE coef ficients automat i- cally. Initially, a preamble input data pattern (’1101’) is applied to the main IDFE circuit to determine the DFE coef ficients, while a fixed input data pattern (’1111’) is applied to the replica ID FE cir- cuit. The difference between the outputs of the two IDFE circuits is used in the feedback loop to determine the DFE c