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BCM2835 Datasheet(PDF) 2 Page - Broadcom Corporation.

Part No. BCM2835
Description  Timers, Interrupt controller, GPIO, USB, PCM/12S
Download  205 Pages
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Manufacturer  BOARDCOM [Broadcom Corporation.]
Direct Link  http://www.broadcom.com
Logo BOARDCOM - Broadcom Corporation.

BCM2835 Datasheet(HTML) 2 Page - Broadcom Corporation.

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06 February 2012 Broadcom Europe Ltd. 406 Science Park Milton Road Cambridge CB4 0WW
Page ii
© 2012 Broadcom Corporation. All rights reserved
Table of Contents
1
Introduction
4
1.1
Overview
4
1.2
Address map
4
1.2.1
Diagrammatic overview
4
1.2.2
ARM virtual addresses (standard Linux kernel only)
6
1.2.3
ARM physical addresses
6
1.2.4
Bus addresses
6
1.3
Peripheral access precautions for correct memory ordering
7
2
Auxiliaries: UART1 & SPI1, SPI2
8
2.1
Overview
8
2.1.1
AUX registers
9
2.2
Mini UART
10
2.2.1
Mini UART implementation details.
11
2.2.2
Mini UART register details.
11
2.3
Universal SPI Master (2x)
20
2.3.1
SPI implementation details
20
2.3.2
Interrupts
21
2.3.3
Long bit streams
21
2.3.4
SPI register details.
22
3
BSC
28
3.1
Introduction
28
3.2
Register View
28
3.3
10 Bit Addressing
36
4
DMA Controller
38
4.1
Overview
38
4.2
DMA Controller Registers
39
4.2.1
DMA Channel Register Address Map
40
4.3
AXI Bursts
63
4.4
Error Handling
63
4.5
DMA LITE Engines
63
5
External Mass Media Controller
65
o
Introduction
65
o
Registers
66
6
General Purpose I/O (GPIO)
89
6.1
Register View
90
6.2
Alternative Function Assignments
102
6.3
General Purpose GPIO Clocks
105
7
Interrupts
109
7.1
Introduction
109
7.2
Interrupt pending.
110
7.3
Fast Interrupt (FIQ).
110
7.4
Interrupt priority.
110
7.5
Registers
112
8
PCM / I2S Audio
119
8.1
Block Diagram
120
8.2
Typical Timing
120
8.3
Operation
121
8.4
Software Operation
122
8.4.1
Operating in Polled mode
122
8.4.2
Operating in Interrupt mode
123


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