Standard No.:	GB/T 13724-1992
English Name:	821BUS－Microprocessor system bus for 1 to 4 byte data
Chinese Name:	821总线 1至4字节数据微处理机系统总线
Chinese Classification:	L65    System equipment interface
Professional Classification:	GB    National Standard
Source Content Issued by:	CSBTS
Issued on:	1992-10-04
Implemented on:	1993-6-1
Status:	superseded
Superseded by:	GB/T 13724-2008 821 BUS - Microprocessor system bus for 1 to 4 byte data
Superseded on:	2009-1-1
Abolished on:	2009-01-01
Target Language:	English
File Format:	PDF
Word Count:	77000 words
Translation Price(USD):	2310.0
Delivery:	via email in 1~10 business day

本标准描述了用于以微处理机为基本系统的高性能底板总线。该并行总线在32位非复用地址和数据信号通路上支持单个数据和数据块传送周期。传输是由异步交换协议所控制。总线分配是按多处理器结构而设定的。该总线也支持内部模块中断，以便能很快地响应内部的和外部发生的各种事件。插件板和机箱的机械结构符合GB3047.1(IEC297-1)《面板和机柜的基本尺寸系列》。