An Adoptive RX equalizer based on Dual Reference DFE for Reflection & ISI Reduction under multi-drop Channel
Siman Li, Chris Soo-Hyun Eom, Jake Jung, Brian Lee · 2022 IEEE 16th International Conference on Solid-State & Integrated Circuit Technology (ICSICT) · 2022
In the paper, adoptive RX equalizer is implemented in DDR4 write path to reduce the reflection and ISI which is caused by multi drop channel. The proposed write path is combined with CTLE and LF equalizer based on dual reference decision-feedback equalization (DFE). The proposed write path scheme can improve the 35% voltage margin compared to conventional write path.