GBT15629.5-1996 信息技术 系统间远程通信和信息交换 局域网和城域网 特定要求 第5部分：令牌环网访问方法和物理层规范.pdfVIP

ICS35.110

L78GB

中华人民共和国国家标准

GB/T15629.5-1996

idtISO/IEC8802-5:1992

信息技术局域网和城域网

第5部分：令牌环访问方法和物理层规范

Informationtechnology-Localand

metropolitanareanetworks－一

Part5:Tokenringaccessmethodand

physicallayerspecifications

1996-12由18发布1997-07-01实施

国家技术监督局发布

GB/T15629.5-1996

目次

前言……………lll

ISO/IEC摘要………N

ISO/IEC前言…………….v

引言…………………………M

1总述·

1.1范围－

1.2定义·

1.3缩略语················……······················……4

1.4引用标准·

1.5一致性要求

2概述………·”…··

3格式和设施…

3.1格式….9

3.2宇段描述······························································……·…10

3.3媒体访问控制（MAC）帧………···························……·…….16

3.4定时器····································································……….23

3.5标志……………·········23

3.6优先级寄存器和堆棱……················································…….•••••••••24

3.7等待时间缓冲器……………24

3.8计数器…··············…………24

4令牌环协议……………·······································…25

4.1概述……···········································…···················································….25

4.2规范···································……·················································…….28

5物理层………····························•••••••••38

5.1符号编码……························…····························•••••••••38

5.2符号解码…………………39

5.3数据信号速率……·········…39

5.4符号定时…·

5.5等待时间缓冲器…………································································•••••••••40

6