Revision and verification of an enhanced UART

Author

Gallo, Raffaele ; Delvai, Martin ; Elmenreich, Wilfried ; Steininger, Andreas

Author_Institution

Inst. fur Tech. Inf., Vienna Univ., Austria

fYear

2004

fDate

22-24 Sept. 2004

Firstpage

315

Lastpage

318

Abstract

This paper describes the design of an eUART (enhanced universal asynchronous receiver and transmitter) that has been designed as an extension module for the SPEAR processor in order to interact with a TTP/A (time-triggered protocol class A) or LIN (local interconnect network) network. The eUART is able to automatically synchronize its baud rate using a synchronization pattern from the message sender. Furthermore, to enhance the robustness of the communication, the eUART module is equipped with a filter state-machine and provides 16fold oversampling. The interpretation of the samples can be configured in order to optimize towards fault detection or availability. The paper describes the capabilities and limits of this approach and shows the advantages of the eUART when used for real-time communication.

Keywords

computer interfaces; data communication equipment; fault diagnosis; protocols; synchronisation; telecommunication networks; SPEAR processor; UART extension module; eUART module; enhanced UART; enhanced universal asynchronous receiver-transmitter; fault detection; filter state machine; local interconnect network; real time communication; robustness; sixteen fold oversampling; synchronization pattern; time triggered protocol class A; Arithmetic; Clocks; Communication system control; Control systems; Costs; Frequency synchronization; Oscillators; Protocols; Robustness; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Factory Communication Systems, 2004. Proceedings. 2004 IEEE International Workshop on

Print_ISBN

0-7803-8734-1

Type

conf

DOI

10.1109/WFCS.2004.1377735

Filename

1377735