题目/Title：多协议可变位宽40bits高速串口发射机
                        A high speed transmitter with 40 bits data and variable data-width and supported multi-protocols (Original in Chinese)

作者/Author：李貌,贾晨,栾文焕,林鑫,王自强,张春,王志华
                        Mao Li,Chen Jia,Wenhuan Luan,Xin Lin,Ziqiang Wang,Chun Zhang,Zhihua Wang

期刊/Journal：微电子学与计算机 Microelectronics & Computer

年份/Issue Date：2019.Sept.

卷（期）及页码/Volume（No.）&pages：Vol.36, No.9, pp. 16 - 20

摘要/Abstract：
本文提出一种多协议,可变位宽发射机系统,最高数据位宽40 bits,最高数据速率10.312 5 Gbps.整个系统由归一化数据位宽（Normalization of Data Width,NMDW）变换电路,40:1合路器（MUX）,时钟分布电路及3抽头前馈均衡器（Feed-Forward-Equalizer,FFE）组成,文章中提出了改进的40:1 MUX电路结构.本文采用SMIC 40 nm CMOS工艺,电源电压1.1 V.发射机（Transmitter,TX）整体功耗34mW@10.3125 G
This paper propose a system of transmitter (TX) supported multi-protocols and variable data-width, with max input data width of 40bits and data rate of 10.3125 Gbps. The transmitter consists of Normalization of Data Width (NMDW), 40: 1MUXs, distributed clock circuit and 3-taps Feed-forward-equalizer (FFE). This paper is proposed an improved 40:1 MUXs circuit and supported in SMIC 40nm CMOS technology, supported by 1.1 V.The power consumption of TX is 34.5mW @ 10.3125 Gbps. The differential eye diagram is larger than 800 mV before channel. Meanwhile, TX is supported 4 different protocols, 7 different data-rate, 9 work conditions, the work temperature ranged from-45℃ to 125℃.