SpaceWire高速串行总线低信号速率建立链路的研究
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摘要
SpacWire(SpW)高速数据总线协议规定了其通信链路10 Mbps的启动速率,这使得SpW数据接口必须要能提供10 MHz的时钟(DDR数据传输的情况下为5 MHz)。在某些特殊的应用场景下,比如要求更低的待机功耗,PCB板没有该指定时钟输入或者系统时钟分频无法提供该指定时钟等,直接降低启动速率会造成链路初始化连接失败[3]。文中提出SpW高速数据总线在低于标准启动速率下建立链路的方法,对协议分析获得相应的数值,并进行仿真验证。仿真测试表明,该方法在低于标准的链路启动速率下,链路可以成功建立,具有较高的应用价值。
SpaceWire(SpW)high speed data bus protocol defines its start-upsignaling rate of its communication link as 10 Mbps,which makes the SpW interface must be able to provide 10 MHz clock(for double data rate is 5 MHz). In some special application scenarios,it may be impossible to provide the specified clock for the SpW interface. In this paper,the method of setting up the link under the standard start-up rate of SpW is proposed. The corresponding theoretical parametersis obtained by theoretical analysis,and tested by simulation.The board test shows that the link can be successfully established under standard initiate signaling rate. The method is of high value.
SpaceWire(SpW)high speed data bus protocol defines its start-upsignaling rate of its communication link as 10 Mbps,which makes the SpW interface must be able to provide 10 MHz clock(for double data rate is 5 MHz). In some special application scenarios,it may be impossible to provide the specified clock for the SpW interface. In this paper,the method of setting up the link under the standard start-up rate of SpW is proposed. The corresponding theoretical parametersis obtained by theoretical analysis,and tested by simulation.The board test shows that the link can be successfully established under standard initiate signaling rate. The method is of high value.
引文
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[13]曾华菘,张春熹,伊小素,等. SpaceWire冗余网络故障检测恢复技术实现[J].计算机测量与控制,2016,24(8):39-43.
[14]侯剑儒,陈晓敏. SpaceWire时延抖动的仿真[J].国防科技大学学报,2013,35(5):114-119,134.
[15]杨志,李国军,杨芳,等. SpaceWire星载网络通信协议设计[J].宇航学报,2012,33(2):200-209.
[16]华伟,李晓娟,关永,等.基于假设保证的SpaceWire总线链路接口的组合验证[J].计算机应用与软件,2013,30(10):12-15,20.
[17]周渊,范裕子,周钦,等.基于SpaceWire路由的节点速率约束条件分析[J].空间电子技术,2015(3):95-98.
[18]潘禄生,徐清泉,王万军.基于位置信息的无线传感器网络路由协议的改进[J].工业仪表与自动化装置,2017(5):88-90.
[19]邹宏伟,熊辉,陈晓涛.AODV路由协议中的黑洞攻击防御策略研究[J].工业仪表与自动化装置,2018(3):62-64.
[2] MCCLEMENTS C,PARKES S. Spacewire codecIP core update[C]//Space Technology Centre Uni-versity of Dundee.International SpaceWire Confer-ence proceedings,2008:63-66.
[3] TAEDA M,ISHII S,NAKAJIMA A,et al. 2MHzLink initiation of MDP onboard MMO[C]//SpaceTechnology Centre University of Dundee.Interna-tional SpaceWire Conference proceedings,2008:301-303.
[4]闫梦婷,安军社,龚泉铭.基于RMAP机制的SpaceWire星载高速总线设计与实现[J].电子技术应用,2016,42(1):108-110,114.
[5]郭林.基于SpaceWire的空间数据网络关键技术研究[D].北京:中国科学院空间科学与应用研究中心,2011.
[6]田园,张杰.基于SpaceWire的链路状态算法研究与设计[J].计算机工程,2011,37(23):113-115.
[7]刘欢,陈卫国,王剑峰,等.多功能三通道200 Mb/s抗辐照SpaceWire节点控制器设计与实现[J].微电子学与计算机,2017,34(11):108-113,118.
[8]杨昭荣,周云峰.面向航天应用的SpaceWire总线节点设计[J].通信对抗,2014,33(2):31-34.
[9]龚泉铭.SpaceWire总线在芯片卫星中的关键技术研究[D].北京:中国科学院大学(中国科学院国家空间科学中心),2017.
[10]代真,何锋,熊华钢.混合机制下的SpaceWire传输延时仿真分析[J].计算机工程与设计,2015,36(1):1-5,102.
[11]路向宁,韩诚山,黄良,等.关于SpaceWire总线接口可靠性的研究[J].计算机测量与控制,2014,22(7):2244-2246.
[12]李月星,李晓娟,关永,等. SpaceWire协议的形式化建模与概率分析[J].小型微型计算机系统,2013,34(9):2025-2029.
[13]曾华菘,张春熹,伊小素,等. SpaceWire冗余网络故障检测恢复技术实现[J].计算机测量与控制,2016,24(8):39-43.
[14]侯剑儒,陈晓敏. SpaceWire时延抖动的仿真[J].国防科技大学学报,2013,35(5):114-119,134.
[15]杨志,李国军,杨芳,等. SpaceWire星载网络通信协议设计[J].宇航学报,2012,33(2):200-209.
[16]华伟,李晓娟,关永,等.基于假设保证的SpaceWire总线链路接口的组合验证[J].计算机应用与软件,2013,30(10):12-15,20.
[17]周渊,范裕子,周钦,等.基于SpaceWire路由的节点速率约束条件分析[J].空间电子技术,2015(3):95-98.
[18]潘禄生,徐清泉,王万军.基于位置信息的无线传感器网络路由协议的改进[J].工业仪表与自动化装置,2017(5):88-90.
[19]邹宏伟,熊辉,陈晓涛.AODV路由协议中的黑洞攻击防御策略研究[J].工业仪表与自动化装置,2018(3):62-64.