TTA - Time Triggered Architecture

A SINGLE CHIP COMMUNICATION CONTROLLER for TTP/C

The AS8202 is a single chip communication controller for the Time Triggered Protocol ( TTP/C ).

TTP/C is an emerging communication protocol for fault-tolerant real time systems based on the Time Triggered Architecture. The application domain of this architecture is safety-critical by-wire systems in the automotive, aerospace and railway industries.

Basic work was done by the Vienna University of Technology in the ESPRIT OMI project "TTA" which resulted in the first silicon implementation of TTP/C, the prototype chip TTA-C1.

The microelectronics department of the Carinthia Tech Institute designed a functionally improved industrial single chip version of the communication controller, the TTP/C-C2 / AS8202.

Key improvements to the prototype chip are:

• Meets automotive industrial specifications
• New 0.35µ Flash-CMOS technology
• Doubled speed on half silicon area
• Integrated Flash memory 32 kbyte
• Fast SRAM block 8 kbyte
• Two independent FIFO-buffered communication channels
• Asynchronous data rate up to 5 MBit/s
• Synchronous data rate 25 MBit/s
• Additional hardware to check data integrity
• On-chip PLL clock generation
• Additional testing circuitry

  Technical details 
  a view on the chip layout

Project Partners

                   

Background information to the Time Triggered Architecture and its applications can be found on:

TTP drive-by-wire :
protocol overview and application article ( german ).

TTA-Group :
a place to exchange information with other TTP users.

TTTech :
TTP/C specification, tools, hardware and software for TTA based applications.

TTP is a registered trademark of FTS Ges.m.b.H. and the TTTech logo is a trademark of TTTech Computertechnik AG. All other trademarks are the property of their respective holders.

The Time-Triggered Technology is protected by several granted or pending patents in the U.S., Europe and Asia.

The author of this page is not responsible for the contents of any links given