BCM2835 데이터 시트보기 (PDF) - Broadcom Corporation

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BCM2835

BCM2835 ARM Peripherals

Broadcom Corporation 

1 Introduction

1.1 Overview

BCM2835 contains the following peripherals which may safely be accessed by the ARM:

• Timers

• Interrupt controller

• GPIO

• USB

• PCM / I2S

• DMA controller

• I2C master

• I2C / SPI slave

• SPI0, SPI1, SPI2

• PWM

• UART0, UART1

The purpose of this datasheet is to provide documentation for these peripherals in sufficient

detail to allow a developer to port an operating system to BCM2835.

There are a number of peripherals which are intended to be controlled by the GPU. These are

omitted from this datasheet. Accessing these peripherals from the ARM is not recommended.

1.2 Address map

1.2.1 Diagrammatic overview

In addition to the ARM’s MMU, BCM2835 includes a second coarse-grained MMU for

mapping ARM physical addresses onto system bus addresses. This diagram shows the main

address spaces of interest:

06 February 2012 Broadcom Europe Ltd. 406 Science Park Milton Road Cambridge CB4 0WW

© 2012 Broadcom Corporation. All rights reserved

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