SAE AIR4903

This section defines the scope of the document, provides a brief history of the Pi-Bus, discusses key features of the Pi-Bus, and provides an overview of the operation of the Pi-Bus.This document is a handbook intended to accompany AS4710 Pi-Bus standard. The purpose of this document is to provide information to aid users of the Pi-Bus, whether they be implementors of Pi-Bus controllers, architects of systems considering using the Pi-Bus, or programmers who must develop applications in a system which uses the Pi-Bus as the backplane communications bus. This document also provides rationale for many of the Pi-Bus requirements as defined in AS4710 and a discussion of potential enhancements that are being considered for the Pi-Bus.The following is a mapping of major sections in this document for particular audiences:aOverview of Pi-Bus and its capabilities: Section 1bPi-Bus rationale: Sections 3, 4, and 5cinformation for IC designers: Sections 3, 4, 5, 8, and 9dInformation for system designers/architects: Sections 1, 6, 7, and 9eInformation for software designer: Sections 1, 6, and 7The following is a synopsis of the history of the Pi-Bus.