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Difference between revisions of "AVC-LAN"

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== Introduction ==
 
The AVC-LAN is part of the Body Electrical System Control and manages all audio and video related
 
The AVC-LAN is part of the Body Electrical System Control and manages all audio and video related
 
functions. The audio bus is described in Toyota's own words as follows:
 
functions. The audio bus is described in Toyota's own words as follows:
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command, but is still much slower than CAN, since realtime speeds are not required.
 
command, but is still much slower than CAN, since realtime speeds are not required.
  
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== Connections ==
 
[[File:iebus-connections.gif]]
 
[[File:iebus-connections.gif]]
  
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== Waveform ==
 
[[File:iebus-waveform.jpg]]
 
[[File:iebus-waveform.jpg]]
  
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== Protocol ==
 
[[File:iebus-message.jpg]]
 
[[File:iebus-message.jpg]]
  
 
(Jeremiah J. Flerchinger [[media:avc-lan.pdf|Source]])
 
(Jeremiah J. Flerchinger [[media:avc-lan.pdf|Source]])

Revision as of 00:00, 30 November 2009

Introduction

The AVC-LAN is part of the Body Electrical System Control and manages all audio and video related functions. The audio bus is described in Toyota's own words as follows:

AVC-LAN consist of audio visual systems such as the multi-display, navigation ECU, radio and
player, stereo component amplifier and gateway ECU. Gateway ECU has communication
circuit to correspond with different types of communication data. Different types of
communication data can be shared among communication parts after it goes through gateway
ECU (System Circuits: AVC-LAN Bus, “Prius Wiring Diagram” 80).

The system itself can be considered a subset of the IEBus Standard, which was delevoped by NEC electronics for automotive use. It is slightly faster than the BEAN bus and has more data per command, but is still much slower than CAN, since realtime speeds are not required.

Connections

Iebus-connections.gif

Waveform

Iebus-waveform.jpg

Protocol

Iebus-message.jpg

(Jeremiah J. Flerchinger Source)