A wide common-mode fully-adaptive multi-standard 12.5Gb/s backplane transceiver in 28nm CMOS

Autor: Bruce Xu, Elad Alon, Daniel Wu, Chi Fung Poon, Fu-Tai An, Jafar Savoj, Stanley Chen, Parag Upadhyaya, Ken Chang, Ade Bekele, Aman Sewani, Xuewen Jiang, Didem Turker, Kang Wei Lai, Kenny Hsieh, Venna Karthik C
Rok vydání: 2012
Předmět:
Zdroj: VLSIC
DOI: 10.1109/vlsic.2012.6243811
Popis: This paper describes the design of a fully-adaptive backplane transceiver embedded in a state-of-the-art, low-leakage, 28nm CMOS FPGA. The receive AFE utilizes a three-stage CTLE to provide selective frequency boost for long-tail ISI cancellation. A 5-tap speculative DFE removes the immediate post-cursor ISI. Both CTLE and DFE are fully adaptive using sign-sign LMS algorithm. A novel clocking technique uses wideband LC and ring oscillators for reliable clocking from 0.6–12.5Gb/s operation. The transmitter utilizes a 3-tap FIR and provides flexibility for supply and ground referenced operation. The transceiver achieves BER < 10−15 over a 33dB-loss backplane at 12.5Gb/s and over channels with 10G-KR characteristics at 10.3125Gb/s.
Databáze: OpenAIRE