A 4×9 Gb/s 1 pJ/b NRZ/multi-tone serial-data transceiver with crosstalk reduction architecture for multi-drop memory interfaces in 40nm CMOS

An aggregated 36 Gb/s low power 4-lanes mixed NRZ/multi-tone transceiver for multi-drop bus (MDB) memory interfaces is designed and fabricated in 40nm CMOS technology. The proposed architecture achieves 1 pJ/bit power efficiency in the entire link (TX + RX) for an MDB channel with 45 dB loss at 3 GHz. The multi-tone nature of the proposed transceiver is employed to properly reduce crosstalk (Xtalk) induced noise and to improve overall power efficiency.