ARM 内核总线的介绍。学习一下可以更加容易掌握ARM的知识-ARM core-bus introduction. And study how to more easily grasp the knowledge of ARM

this amba axi version 1.0-this is amba axi version 1.0

The APB is part of the AMBA 3 protocol family. It provides a low-cost interface that is optimized for minimal power consumption and reduced interface complexity. The APB interfaces to any peripherals that are low-bandwidth and do not require the high