A 1.0625 14.025 Gb/s Multi-Media Transceiver With Full-Rate Source-Series-Terminated Transmit Driver and Floating-Tap Decision-Feedback Equalizer in 40 nm CMOS Freeman Zhong, Shaolei Quan, Wing Liu, Pervez Aziz, Tai Jing, Jen Dong, Chintan Desai, Hairong Gao, Monica Garcia, Gary Hom, Tony Huynh, Hiroshi Kimura, Ruchi Kothari, Lijun Li, Cathy Liu, Scott Lowrie, Kathy Ling, Amaresh Malipatil, Ram Narayan, Tom Prokop

Abstract

A 14.025 Gb/s multi-media transceiver employs on-die Rx AC coupling with baseline wander correction and equalizes up to 26 dB insertion loss at 14.025 Gb/s with a linear equalizer, 10-tap DFE, and 4-tap Tx FIR filter in SST driver. The proposed techniques enable direct feedback for 1st-tap ISI cancel- lation, and positions of four DFE taps to be adapted over the range of 7 to 38 UI. The prototype is realized in 40 nm CMOS, consumes 410 mW at worst case, and has passed 16GFC compliance tests at 14.025 Gb/s.