关键词: 高速串并收发器, 交流耦合电容, 传输性能

Abstract: With the rapid increase in the transmission rate of high-speed serial-parallel transceivers (SerDes), how to ensure the quality of data transmission has become a hot issue in domestic and foreign research. Through the analysis of existing researches, the high-speed SerDes debugging method based on design for testability (DFT) has realized the dynamic configuration of SerDes parameters. The high-speed SerDes transmission performance at different rates is tested, and the influence of the selection of alternating current (AC) coupling capacitors at different speeds on the performance of SerDes Is verified. Aiming at the different speeds of high-speed SerDes within 16 Gbit/s, schemes for selecting 100 nF and 470 nF coupling capacitors according to the speed are proposed.

Key words: high-speed SerDes, AC coupling capacitor, transmission performance