1553B总线大块数据传输的解决方法

1553B总线标准规定每个消息最大只允许传输32个字（字长20位,有效字长16位）数据,但有一些1553B通讯系统需要传输超过32字的大块数据。结合DDC公司的BU-61559芯片,就单消息模式和增强模式下循环缓冲模式两种模式,介绍了解决大块数据的两种方法,并结合查找表概念对其原理进行了详细的分析,对循环缓冲模式实现过程中的关键点进行了说明。

Methods of Transmitting Bulk Data Over 1553B Bus

MIL-STD-1553B permits that one message transmits most 32 words（20 bits,valid 16 bits）data,but some 1553B communication systems often need to transmit a bulk data which exceeds 32 words.This paper introduces two ways to transmit a bulk data under single message mode and circular buffer mode using the bu-61559 chipset of DDC,at the same time,combining the concepts of RT look-up table,explain the theory of the two methods,and also point the key to realize the method under Circular buffer mode.