Describes recent developments of ASICs for automotive multiplexing and data communications to implement in-vehicle networks. With the advancement of automotive electronics, there are growing needs for in-vehicle networks. One need is associated with solving the problem of an increasing number of electrical signal wires that inevitably accompany the increasing applications of automotive electronics. Another kind of need is concerned with sharing vehicle control data among several electronic control units such as engine, brake, suspension, and steering electronic control units to achieve an integrated vehicle control system for the purpose of obtaining higher performances in vehicle dynamics. In order to reduce the number of signal wires and share the control data, in-vehicle networks based on multiplexing and data communications are required. Two original communication protocols are presented to respectively cover low- and high-speed multiplexing and data communications that are the two most needed communication speed areas in present and future automobiles. ASICs for the communication protocols were designed and fabricated, using 2 mu m CMOS process. They have a chip size of 3.2 mm*2.7 mm with 5,000 transistors and 6.9 mm*4.9 mm with 18,000 transistors respectively for low- and high-speed multiplexing and data communications. An elaborate bus driver/receiver ASIC required for high-speed multiplexing and data communications was also designed and fabricated, using 35 V DC bipolar process.
Multiplexing and data communications integrated circuits for automotive in-vehicle networks
Multiplexer und integrierte Schaltungen für die Datenkommunikation in Kraftfahrzeuginformationsnetzen
IEICE Transactions on Electronics ; E76-C , 12 ; 1756-1766
1993
11 Seiten, 9 Quellen
Aufsatz (Zeitschrift)
Englisch
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