P2020处理器参考手册

P2020

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P2020 QorIQ Integrated Processor

Reference Manual

Supports: P2020 and P2010

Document Number: P2020RM

Rev. 2, 12/2012

Contents

Section number Title Page

Chapter 1

Overview

1.1 Overview.......................................................................................................................................................................67

1.1.1 Block diagram............................................................................................................................................67

1.1.2 Critical performance parameters................................................................................................................68

1.1.3 Chip-level features.....................................................................................................................................69

1.2 Application examples....................................................................................................................................................70

1.2.1 LTE and WiMax baseband application......................................................................................................70

1.2.2 Line card control plane application............................................................................................................71

1.3 Architecture overview...................................................................................................................................................72

1.3.1 e500v2 cores and memory unit..................................................................................................................72

1.3.2 e500 coherency module (ECM) and address map.....................................................................................73

1.3.3 Integrated security engine (SEC)...............................................................................................................74

1.3.4 Enhanced three-speed Ethernet controllers................................................................................................74

1.3.5 Universal serial bus (USB) 2.0..................................................................................................................76

1.3.6 Enhanced secure digital host controller.....................................................................................................76

1.3.7 Enhanced serial peripheral interface (eSPI)...............................................................................................77

1.3.8 DDR SDRAM controller...........................................................................................................................77

1.3.9 High speed I/O interfaces...........................................................................................................................78

1.3.9.1 PCI Express interfaces...........................................................................................................78

1.3.9.2 Serial RapidIO interfaces.......................................................................................................79

1.3.9.3 SGMII....................................................................................................................................79

1.3.9.4 High-speed interface multiplexing.........................................................................................79

1.3.10 Programmable interrupt controller (PIC)...................................................................................................80

1.3.11 DMA, I2C, DUART, and eLBC................................................................................................................80

1.3.12 Device boot locations.................................................................................................................................81

1.3.13 Boot sequencer...........................................................................................................................................82

P2020 QorIQ Integrated Processor Reference Manual, Rev. 2, 12/2012

Freescale Semiconductor, Inc. 3

Section number Title Page

1.3.14 Power management....................................................................................................................................82

1.3.15 System performance monitor.....................................................................................................................82

Chapter 2

Memory Map

2.1 Overview.......................................................................................................................................................................83

2.2 Configuration, control, and status registers..................................................................................................................84

2.2.1 Accessing CCSR memory from the local processor..................................................................................85

2.2.2 Accessing CCSR memory from external masters......................................................................................85

2.2.3 Organization of CCSR space.....................................................................................................................86

2.2.3.1 General utilities registers.......................................................................................................86

2.2.3.1.1 General utilities register organization.............................................................87

2.2.3.2 Programmable interrupt controller registers..........................................................................88

2.2.3.3 Serial RapidIO registers.........................................................................................................89

2.2.3.4 Device-specific utilities registers...........................................................................................90

2.2.4 CCSR address map.....................................................................................................................................91

2.3 Local access windows...................................................................................................................................................94

2.3.1 Precedence of local access windows..........................................................................................................95

2.3.2 Configuring local access windows.............................................................................................................95

2.3.3 Distinguishing local access windows from other mapping functions........................................................95

2.3.4 Illegal interaction between local access windows and DDR chip selects..................................................96

2.3.5 Local address map example.......................................................................................................................96

2.4 Local access window registers......................................................................................................................................97

2.4.1 Local access window 0 base address register (LAW_LAWBARn)..........................................................99

2.4.2 Local access window 0 attribute register (LAW_LAWARn)....................................................................99

2.5 Address translation and mapping units.........................................................................................................................101

2.5.1 Address translation ....................................................................................................................................101

2.5.2 Outbound ATMUs.....................................................................................................................................102

2.5.3 Inbound ATMUs........................................................................................................................................103

2.5.3.1 Illegal interaction between inbound ATMUs and LAWs......................................................103

P2020 QorIQ Integrated Processor Reference Manual, Rev. 2, 12/2012

4 Freescale Semiconductor, Inc.

Section number Title Page

Chapter 3

Signal Descriptions

3.1 Signals overview...........................................................................................................................................................105

3.2 Configuration signals sampled at reset.........................................................................................................................116

3.3 Output signal states during reset...................................................................................................................................118

Chapter 4

Reset, Clocking, and Initialization

4.1 Overview.......................................................................................................................................................................119

4.2 External signal descriptions..........................................................................................................................................119

4.2.1 System control signals...............................................................................................................................120

4.2.2 Clock signals..............................................................................................................................................121

4.3 Accessing configuration, control, and status registers..................................................................................................122

4.3.1 Updating CCSRBAR.................................................................................................................................122

4.3.2 Accessing alternate configuration space....................................................................................................123

4.3.3 Boot page translation.................................................................................................................................124

4.3.4 Boot sequencer...........................................................................................................................................124

4.4 Reset Memory Map/Register Definition.......................................................................................................................124

4.4.1 Configuration, control, and status registers base address register (Reset_CCSRBAR)............................125

4.4.2 Alternate configuration base address register (Reset_ALTCBAR)...........................................................126

4.4.3 Alternate configuration attribute register (Reset_ALTCAR)....................................................................126

4.4.4 Boot page translation register (Reset_BPTR)............................................................................................127

4.5 Functional description...................................................................................................................................................127

4.5.1 Reset operations.........................................................................................................................................127

4.5.1.1 Soft reset................................................................................................................................128

4.5.1.2 Hard reset...............................................................................................................................128

4.5.2 Power-on reset sequence............................................................................................................................128

4.5.3 Power-on reset configuration.....................................................................................................................130

4.5.3.1 System PLL ratio...................................................................................................................131

4.5.3.2 DDR PLL Ratio.....................................................................................................................132

P2020 QorIQ Integrated Processor Reference Manual, Rev. 2, 12/2012

Freescale Semiconductor, Inc. 5