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| 型號(hào)： | AN1816 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | USING THE HC912B32 TO IMPLEMENT THE DISTRIBUTED SYSTEMS INTERFACE (DSI) PROTOCOL |
| 中文描述： | 使用本HC912B32為實(shí)施分布式系統(tǒng)接口（DSI）協(xié)議 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 332K |
| 代理商： | AN1816 |
Order this document
by AN1816/D
AN1816
Motorola, Inc., 1999
AN1816
USING THE HC912B32 TO IMPLEMENT THE DISTRIBUTED
SYSTEMS INTERFACE (DSI) PROTOCOL
By
Tracy McHenry
August 1999
Introduction
System design requirements are continually changing as systems
become increasingly complex. In conventional systems where sensors
and actuators are connected directly to a microcontroller (MCU), the
number of pins available on the MCU limits system expansion. As a
result, extra costs can be incurred if another MCU is required or if the
hardware has to be redesigned to accommodate a higher pin count
MCU. An alternative approach is to move to a distributed bus
architecture. This option allows one master MCU to interconnect to
many remote sensors and actuators.
The Distributed Systems Interface (DSI) is one such master/slave
system, with the central control module being the master and the remote
sensors and actuators acting as slave devices. A key feature of the DSI
architecture is that the sensors and actuators can be connected on the
same bus. Another benefit of the DSI is that it promotes the use of
standard components and interfaces which enables maximum re-use
and accelerates time to market. This is a great advantage to systems
designers who are therefore able to develop flexible system solutions. It
was initially developed for the automotive market although it is equally
suited to other applications that require distributed sensors and/or
actuators. Examples of possible DSI applications include occupant
safety systems, body networks, building and industrial controls.
This application note provides an overview of the DSI and describes the
hardware and software design of a demonstrator system.
F
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