求一种基于FPGA的时钟数据恢复电路的设计实现数据恢复？ 一种基于FPGA的时钟数据恢复电路的设计实现摘要：设计了一种利用FPGA的可编程输入延时单元（IDELAY）和锁相环输出同频多相时钟结合的8倍过采样高速时钟数据恢复电路。。
英文文献翻译，牛人帮帮忙，翻得好再加分 4)Flow-Control Scheme：The flow control signal has to fulfill the following requirements：it has to be transmitted over a differential pair；for AC coupling it has to be DC free；it has to represent two states，receiver busy or ready.We chose the flow control signal to be a square-wave because it is DC free and can easily be generated by clocked digital logic.The part of the FPGA which interfaces to the SerDes and performs the flow control is running at the same clock-speed as the parallel SerDes interfaces，e.g.125MHz for a 2.5Gbit/s link.The receiver FPGA signals that it is ready to receive by generating a square-wave at half its clock frequency，i.e.62.5MHz.If the receiver is running out of FIFO space it signals the sender to stop by generating a square-wave at an eighth of the clock frequency.4.信息流控制方案：信息流控制信号必须符合下列要求：信号必须通过一对差分线；交流电的耦合必须没有直流；它必须显示两种状态，接收器繁忙或准备接收。我们选择的是方波信息流控制信号，因为它不需要。
dsp builder中signal compiler分析是报的错误如何解决，谢谢 你是否有用过c盘搬家，如果搬过’我的文档‘则会导致MATLAB的 current directory地址出现乱码（及软件第二行可见），你用C盘搬家搬 回来就可以啦
求FPGA设计的基本原则、技巧与时序电路设计 qq群：65729856？？ 这里不再一一介绍，详情可登录 http：//training.chinaecnet.com查询。信号与变量 信号仅仅用做 VHDL实体的连接口。信号仅可以在结构体内说明，它们可以作为参数通过函数和。
USB芯片到底完成了哪些工作？ 在板级设计中比较意外的是USB通信需要单独一块USB控制芯片。请问它具体实现了哪些功能呢。或者…
