Introduction; Special Note; Hardware - AVT 84 Series Manual

1. Introduction

This document describes the AVT-841, AVT-842, and AVT-843 hardware and firmware.
The AVT-841, 842, and 843 are nearly identical units. The only difference is the means by which they
connect to and communicate with the host computer.
AVT-841: RS-232 serial communications with host computer.
AVT-842: USB communications with the host computer.
AVT-843: Ethernet communications with host computer.
They are multiple network interfaces for in-vehicle networks. The hardware and operational firmware
support the following networks/protocols:
• J1850 VPW (GM Class 2 compliant) with 4x mode.
• 2-wire high speed CAN; ISO 11898-2 : 2016;
(known as CAN0, channel number 0).
• 2-wire high speed CAN; ISO 11898-2 : 2016;
or
Single Wire CAN (SWC); J2411;
(known as CAN4, channel number 4).
• LIN or K-line; (LIN1 is channel 5, KWP is channel 6).
NOTE:
CAN0 and CAN4 do NOT support low speed fault tolerant CAN; ISO 11898-3 : 2006.
Some simultaneous operations are supported. Some are not.

1.1 Special Note

References in this document to "AVT-84x" mean the AVT-841, 842, or 843 - depending on the unit
being used.
References to specific models are made where necessary.
All three units can be considered identical; unless otherwise noted.

1.2 Hardware

Refer to our web site for the most up-to-date information about the hardware status of each board.
The AVT-841 board revision stands at "B1."
[Normally a stock item.]
Hardware status:
The AVT-842 board revision stands at "A1."
[Replaced by the AVT-852.]
Hardware status:
The AVT-843 board revision stands at "A2."
[Replaced by the AVT-853.]
AVT-84x Multiple Interface
www.AVT-HQ.com/841_hw.htm
www.AVT-HQ.com/842_hw.htm
Advanced Vehicle Technologies, Inc.
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