GB/T 38065-2019
航天器SpaceWire总线技术要求
Technical requirements of SpaceWire bus on spacecraft
2019-10-18 发布
2020-05-01 实施
目 次
前言................................................1
1范围..................................................1
2规范性引用文件..............................................1
3术语和定义、缩略语............................................1
3.1术语和定义............................................1
3.2缩略语..............................................4
4 一般要求................................................4
4.1总线结构.............................................4
4.2协议栈..............................................5
5详细要求.................................................6
5.1 物理层.............................................6
5.1.1    电缆...........................................6
5.1.2连接器...........................................6
5.1.3    电缆组件.........................................7
5.1.4    PCB 布线.......................................9
5.2信号层..............................................9
5.2.1    LVDS ....................................... 9
5.2.2信号编码.........................................11
5.2.3 Space Wire 链路...............................11
5.2.4链路速率.........................................11
5.3字符层.............................................12
5.3.1数据字符.........................................12
5.3.2控制字符.........................................12
5.3.3控制码..........................................13
5.3.4奇偶校验.........................................13
5.3.5初始传输字符.......................................13
5.3.6链路发送器/接收器与主机系统接口 ........................... 13
5.4 交換层............................................14
5.4.1链路字符和标准字符....................................14
5.4.2字符传输优先级......................................14
5.4.3链路流控制........................................14
5.4.4链路状态机........................................15
5.4.5链路初始化........................................18
5.4.6差错检测 ........................................20
5.5包层..............................................21
5.5.1包的定义.........................................21
5.5.2    CCSDS包在SpaceWire网络上的传输..................... 21
5.6网络层.............................................21
5.6.1    基本特性........................................21
5.6.2    SpaceWire 路由................................23
5.6.3    SpaceWire 节点................................24
5.6.4    SpaceWire    M络................................24
5.6.5    网络时间........................................24
6故障恢复机制.............................................25
6.1交換层故障及处理........................................25
6.1.1交挨层故障类型......................................25
6.1.2交挨层故障处理......................................25
6.2网络层故障及处理........................................25
6.2.1链接错误处理.......................................25
6.2.2接收到包错误结束字符处理.................................25
6.2.3无效目的姗处理 .....................................26
6.3链路错误恢复..........................................26
6.4应用层故障处理.........................................26
6.4.1应用层约定........................................26
6.4.2链路初始化超时故障处理..................................27
6.4.3包传输超时故障处理....................................27
6.4.4包接收超时故障处理....................................27
7典型应用...............................................27
7.1系统设计............................................27
7.2工艺设计............................................28
7.2.1 PCB 设计.......................................28
7.2.2连接器焊接 ..........S............................ 28
7.3结构设计............................................28