Development of A USB-Based Programmable SDLC Measurement Unit
USB-Based portable Measurement instrument has becoming more and more popular in field application. Recently, isolated RS-485 based Synchronous Data Link Control (SDLC) connection was used in aerospace payloads. Custom versions of SDLC protocol was designed for optimizations of specific applications, so do the SDLC protocol Measurement Units. A USBBased SDLC Protocol Measurement Units design is presented in this paper. The Measurement system consists of a high speed USB connected Measurement Unit and a robust laptop computer. All the power the Measurement Unit need is supplied by the USB Power cord. The SDLC protocol is implemented on FPGA, a high speed USB MCU is introduced to manage the high speed data link to the computer. We design a special structure to fit the requirement of flexible SDLC Commands handling. An Over-sampling serial data front end is introduced to support flexible data rate communication, test data shows that the Measurement Unit supports data rate within 2Mbps～10Mbps.
protocol test SDLC USB High Speed Communication
Chen Pei Liu Baohui Han Chao Yang Lan
School of Astronautics,Beihang University 37 Xueyuan Road,Beijing,China China Yilai Aerospace Electronics Co.LTD 51 Yongding Road,Haidian District
国际会议
2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)
北京
英文
2224-2227
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）