The paper proposes a novel transceiver in physical layer for high-speed serial data link based upon Universal Serial Bus (USB) 2.0, comprising transmitter and receiver. In the design, transmitter contains pre-and-main...The paper proposes a novel transceiver in physical layer for high-speed serial data link based upon Universal Serial Bus (USB) 2.0, comprising transmitter and receiver. In the design, transmitter contains pre-and-main driver to satisfy slew rate of output data, receiver includes optimized topology to improve preci- sion of received data. The circuit simulation is based on Cadence’s spectre software and Taiwan Semiconduc- tor Manufacture Corporation’s library of 0.25μm mixed-signal Complementary Metal-Oxide Semiconductor (CMOS) model. The front and post-simulation results reveal that the transceiver designed can transmit and re- ceive high-speed data in 480Mbps, which is in agreement with USB2.0 specification. The chip of physi- cal-layer transceiver has been designed and implemented with 0.25μm standard CMOS technology.展开更多
针对传统通用串行总线(Universal Serial Bus,USB)接口数据安全传输方法存在丢包率较高的问题,提出基于高级加密标准(Advanced Encryption Standard,AES)的USB接口数据安全传输方法。首先,对读取的数据进行AES加密,并通过计算形成单向函...针对传统通用串行总线(Universal Serial Bus,USB)接口数据安全传输方法存在丢包率较高的问题,提出基于高级加密标准(Advanced Encryption Standard,AES)的USB接口数据安全传输方法。首先,对读取的数据进行AES加密,并通过计算形成单向函数;其次,检验发送的加密数据,确保无加密传输错误或安全风险;最后,设计对比实验。实验结果表明,与传统传输方法相比,该方法的丢包率更低。展开更多
开发USB(Universal Serial Bus)设备驱动是一项比较繁琐的工作。Linux中的USB核心子系统提供了大量的API以及相关的支持机制,保证了USB设备的即插即用,简化了驱动的编写。结合具体开发实例,介绍了USB的相关概念,分析Linux中USB核心子系...开发USB(Universal Serial Bus)设备驱动是一项比较繁琐的工作。Linux中的USB核心子系统提供了大量的API以及相关的支持机制,保证了USB设备的即插即用,简化了驱动的编写。结合具体开发实例,介绍了USB的相关概念,分析Linux中USB核心子系统的框架构成以及重要的数据结构,剖析Linux内核对USB规范的支持,描述了驱动开发的一般方法和技巧。展开更多
文摘The paper proposes a novel transceiver in physical layer for high-speed serial data link based upon Universal Serial Bus (USB) 2.0, comprising transmitter and receiver. In the design, transmitter contains pre-and-main driver to satisfy slew rate of output data, receiver includes optimized topology to improve preci- sion of received data. The circuit simulation is based on Cadence’s spectre software and Taiwan Semiconduc- tor Manufacture Corporation’s library of 0.25μm mixed-signal Complementary Metal-Oxide Semiconductor (CMOS) model. The front and post-simulation results reveal that the transceiver designed can transmit and re- ceive high-speed data in 480Mbps, which is in agreement with USB2.0 specification. The chip of physi- cal-layer transceiver has been designed and implemented with 0.25μm standard CMOS technology.
文摘针对传统通用串行总线(Universal Serial Bus,USB)接口数据安全传输方法存在丢包率较高的问题,提出基于高级加密标准(Advanced Encryption Standard,AES)的USB接口数据安全传输方法。首先,对读取的数据进行AES加密,并通过计算形成单向函数;其次,检验发送的加密数据,确保无加密传输错误或安全风险;最后,设计对比实验。实验结果表明,与传统传输方法相比,该方法的丢包率更低。
文摘开发USB(Universal Serial Bus)设备驱动是一项比较繁琐的工作。Linux中的USB核心子系统提供了大量的API以及相关的支持机制,保证了USB设备的即插即用,简化了驱动的编写。结合具体开发实例,介绍了USB的相关概念,分析Linux中USB核心子系统的框架构成以及重要的数据结构,剖析Linux内核对USB规范的支持,描述了驱动开发的一般方法和技巧。
