Dave Embedded Systems ARM Cortex-A9 MPCore Hardware Manual page 3

A x e l H a r d w a r e M a n u a l
Table of Contents
1 Preface.....................................................................................................................................6
1.1 About this manual.............................................................................................................6
1.2 Copyrights/Trademarks.....................................................................................................6
1.3 Standards..........................................................................................................................6
1.4 Disclaimers.......................................................................................................................6
1.5 Warranty............................................................................................................................6
1.6 Technical Support.............................................................................................................7
1.7 Related documents...........................................................................................................8
1.8 Conventions, Abbreviations, Acronyms............................................................................8
2 Introduction.............................................................................................................................10
2.1 Product Highlights...........................................................................................................12
2.2 Block Diagram.................................................................................................................13
2.3 Feature Summary...........................................................................................................14
3 Design overview.....................................................................................................................17
3.1 Freescale i.MX6 application processor...........................................................................17
3.2 DDR3 memory bank.......................................................................................................19
3.3 NOR flash bank...............................................................................................................19
3.4 NAND flash bank............................................................................................................20
3.5 Memory Map...................................................................................................................20
3.6 Power supply unit...........................................................................................................20
3.7 CPU module connectors.................................................................................................20
4 Mechanical specifications......................................................................................................22
4.1 Board Layout...................................................................................................................22
4.2 Connectors......................................................................................................................24
5 Power, reset and control........................................................................................................25
5.1 Power Supply Unit (PSU) and recommended power-up sequence...............................25
5.2 Reset scheme and control signals..................................................................................29
5.2.1 CPU_PORn.............................................................................................................30
5.2.2 Boot_Mode0/1.........................................................................................................30
5.3 Voltage monitor...............................................................................................................30
5.4 System boot....................................................................................................................30
5.4.1 Boot modes.............................................................................................................31
5.4.2 Default boot configuration.......................................................................................32
5.4.3 Boot sequence customization.................................................................................33
5.5 Clock scheme.................................................................................................................34
5.6 Recovery.........................................................................................................................34
5.6.1 JTAG Recovery.......................................................................................................34
5.6.2 USB Recovery.........................................................................................................35
5.6.3 SD/MMC Recovery..................................................................................................35
5.7 Multiplexing.....................................................................................................................35
5.8 RTC.................................................................................................................................36
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