Fieldbus interface control IC

Conference Proceedings. 10th Anniversary. IMTC/94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat. No.94CH3424-9) Pub Date : 1994-05-10 DOI:10.1109/IMTC.1994.352033

Y. Yoshida, K. Mizoe, A. Matsuda, S. Kuroiwa

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Abstract

This paper introduces FRONTIER-1; the first chip developed for Fieldbus Interface which integrates complete functions including the modem and the transceiver required for implementing H1 Fieldbus Physical Layer Specification (Wire media, Voltage mode, 31.25 kbps). FRONTIER-1 contains high-voltage bipolar devices to drive the bus, analog circuits such as Op-amps, comparators and a voltage reference for drive control, voltage regulation and filters, and CMOS for the modem circuits. The integration of the transceiver and the modem was accomplished by using high-voltage Bi-CMOS process technology. On transmitting, FRONTIER-1 adds the frame delimiters and preambles to the messages supplied by a host CPU, generates FCS (Frame Check Sequence), and performs Manchester encoding. Transmitted digital signal is converted to the analog signal on the bus. On receiving, the signal on the bus is digitized, and modem circuits decode Manchester data and check FCS, and a host CPU reads the messages.<>

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现场总线接口控制IC

本文介绍了FRONTIER-1;第一个为现场总线接口开发的芯片，集成了实现H1现场总线物理层规范(有线媒体，电压模式，31.25 kbps)所需的调制解调器和收发器等完整功能。FRONTIER-1包含用于驱动总线的高压双极器件、模拟电路(如运算放大器、比较器和用于驱动控制的参考电压、电压调节和滤波器)以及用于调制解调器电路的CMOS。采用高压双cmos工艺技术实现了收发器与调制解调器的集成。在传输时，FRONTIER-1向主机CPU提供的消息添加帧分隔符和前导，生成FCS(帧检查序列)，并执行曼彻斯特编码。传输的数字信号在总线上转换成模拟信号。接收到信号后，总线上的信号被数字化，调制解调器电路解码曼彻斯特数据并检查FCS，主机CPU读取消息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Proceedings. 10th Anniversary. IMTC/94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat. No.94CH3424-9)

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