DESCRIPTION
===========
This example project shows how to use the IAR Embedded Workbench for ARM
to develop code for the Atmel AT91SAM9261 evaluation boards.
It shows basic use of parallel I/O, timer and the interrupt controller.
It starts by showing different patterns on the LED s separated by half second.
COMPATIBILITY
=============
The project is compatible with the AT91SAM9261-EK board.
CRC碼產(chǎn)生器與校驗器程序
Features ：
Executes in one clock cycle per data word
Any polynomial from 4 to 32 bits
Any data width from 1 to 256 bits
Any initialization value
Synchronous or asynchronous reset
