Dave Embedded Systems Axel ULite User manual
www.dave.eu [email protected]
ARM Cortex A7 MPCore
CPU Module
Lite Line
HARDWARE MANUAL
DAVE E bedded Syste s
AXEL ULite
AXEL ULite Hardware Manual v.1.0.2
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AXEL ULite Hardware Manual v.1.0.2
Table of Contents
1 Preface.....................................................................................................................................7
1.1 About this manual.............................................................................................................7
1.2 Copyrights/Trademarks.....................................................................................................7
1.3 Standards..........................................................................................................................7
1.4 Disclaimers.......................................................................................................................7
1.5 Warranty............................................................................................................................7
1.6 Technical Support.............................................................................................................8
1.7 Related documents...........................................................................................................9
1.8 Conventions, Abbreviations, Acronyms............................................................................9
2 Introduction.............................................................................................................................11
2.1 Product Highlights...........................................................................................................12
2.2 Block Diagram.................................................................................................................13
2.3 Feature Summary...........................................................................................................14
3 Design overview.....................................................................................................................16
3.1 NXP i.MX6UL application processor...............................................................................16
3.2 DDR3 memory bank.......................................................................................................18
3.2.1 Reliable Storage Strategy ..................................................................................... 19
3.2.1.1 Write endurance ..............................................................................................20
3.3 NOR flash bank...............................................................................................................21
3.4 NAND flash bank............................................................................................................22
3.5 Memory map...................................................................................................................22
3.6 Power supply unit...........................................................................................................22
3.7 Power consumption........................................................................................................23
3.8 CPU module connectors.................................................................................................23
4 Mechanical specifications......................................................................................................24
4.1 Board Layout...................................................................................................................24
4.2 Connectors......................................................................................................................25
4.3 Mechanical data table.....................................................................................................26
5 Pinout table............................................................................................................................27
5.1 Carrier board mating connector J2.................................................................................27
6 Peripheral interfaces..............................................................................................................35
6.1 Fixed HW peripherals.....................................................................................................36
6.1.1 Ethernet ................................................................................................................. 36
6.1.2 USB ....................................................................................................................... 37
6.1.2.1 USB OTG 1 .....................................................................................................37
6.1.2.2 USB OTG 2 .....................................................................................................37
6.1.3 MMC/SD/SDIO ...................................................................................................... 38
6.1.3.1 MMC/SD/SDIO1 ..............................................................................................38
6.1.4 SPI ......................................................................................................................... 38
6.1.5 ECSPI1 .................................................................................................................. 39
6.1.6 NAND ..................................................................................................................... 39
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6.2 Variant base peripherals.................................................................................................40
6.2.1 FULL GPIO configuration ...................................................................................... 40
6.3 HMI configuration – use case 1......................................................................................41
6.3.1 LCD controller ........................................................................................................ 41
6.3.2 ECSPI2 .................................................................................................................. 43
6.3.3 I²C2 ........................................................................................................................ 43
6.3.4 KPP ........................................................................................................................ 43
6.3.5 UART1 ................................................................................................................... 44
6.3.6 UART2 ................................................................................................................... 44
6.3.7 UART3 ................................................................................................................... 44
6.3.8 SAI2 ....................................................................................................................... 44
6.4 IoT Gateway – use case 2..............................................................................................45
6.4.1 ENET2 ................................................................................................................... 46
6.4.2 UART1 ................................................................................................................... 46
6.4.3 UART2 – four wires ............................................................................................... 46
6.4.4 UART3 – four wires ............................................................................................... 47
6.4.5 UART4 – for wires ................................................................................................. 47
6.4.6 UART 5 .................................................................................................................. 47
6.4.7 UART 6 .................................................................................................................. 47
6.4.8 UART 7 .................................................................................................................. 48
6.4.9 UART 8 – for wires ................................................................................................ 48
6.4.10 I²C3 ...................................................................................................................... 48
6.4.11 I²C4 ...................................................................................................................... 48
6.4.12 ECSPI2 ................................................................................................................ 48
6.4.13 ECSPI3 ................................................................................................................ 49
6.4.14 MMC/SD/SDIO2 .................................................................................................. 49
6.5 Customized pin muxing configuration.............................................................................50
7 Power, reset and control........................................................................................................51
7.1 Power Supply Unit (PSU) and recommended power-up sequence...............................52
7.1.1 Power-up sequence ............................................................................................... 54
7.2 Reset scheme and control signals..................................................................................55
7.2.1 CPU_PORn ........................................................................................................... 55
7.3 System boot....................................................................................................................56
7.3.1 Boot options ........................................................................................................... 56
7.3.1.1 SPI NOR / SD option .......................................................................................56
7.3.1.2 NAND / SD option ...........................................................................................57
7.4 Clock scheme.................................................................................................................57
7.5 Recovery.........................................................................................................................57
7.5.1 JTAG Recovery ..................................................................................................... 57
7.5.2 USB Recovery ....................................................................................................... 57
7.5.3 SD/MMC Recovery ................................................................................................ 58
7.6 Multiplexing.....................................................................................................................58
8 Operational characteristics....................................................................................................59
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8.1 PSU input range..............................................................................................................59
8.1.1 PSU input configuration 0,1 ................................................................................... 59
8.1.2 PSU input configuration 2 ...................................................................................... 59
8.1.3 PSU input configuration 3 ...................................................................................... 59
8.2 Power consumption........................................................................................................59
8.2.1 Configuration1 ....................................................................................................... 60
8.3 Heat Dissipation..............................................................................................................60
9 Application Notes...................................................................................................................61
10 RESERVED AREA registration............................................................................................62
Illustration Index
Fig. 1: AXEL ULite.....................................................................................................................11
Fig. 2: AXEL ULite block diagram.............................................................................................13
Fig. 3: Board layout - top view..................................................................................................24
Fig. 4: Board bottom - top view.................................................................................................25
Fig. 5: Simplified block diagram of integrated power supply unit.............................................53
Fig. 6: Simplified block diagram of reset circuitry and voltage monitoring................................55
Fig. 7: Accessing the RESERVED AREA.................................................................................63
Index of Tables
Tab. 1: Related documents.........................................................................................................9
Tab. 2: Abbreviations and acronyms used in this manual...........................................................9
Tab. 3: CPU, Memories, Buses.................................................................................................14
Tab. 4: Peripherals....................................................................................................................14
Tab. 5: Electrical, Mechanical and Environmental Specifications.............................................15
Tab. 6: DDR3 Specifications.....................................................................................................18
Tab. 7: comparison....................................................................................................................20
Tab. 8: comparison....................................................................................................................20
Tab. 9: NOR flash specifications...............................................................................................21
Tab. 10: NAND flash specifications...........................................................................................22
Tab. 11: mechanical data table.................................................................................................26
Tab. 12: pinout table..................................................................................................................27
Tab. 13: J2 odd pins (1 to 203).................................................................................................30
Tab. 14: J2 even pins (2 to 204)................................................................................................34
Tab. 15: Ethernet interface signals............................................................................................36
Tab. 16: USB1 interface signals................................................................................................37
Tab. 17: USB2 interface signals................................................................................................37
Tab. 18: SD1 interface signals..................................................................................................38
Tab. 19: ECSPI1 interface signals............................................................................................39
Tab. 20: SPI NOR / SD option...................................................................................................56
Tab. 21: NAND / SD option.......................................................................................................57
Tab. 22: Application Notes.........................................................................................................61
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AXEL ULite Hardware Manual v.1.0.2
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AXEL ULite Hardware Manual v.1.0.2
1 Preface
1.1 About this anual
This Hardware Manual describes the AXEL ULite CPU module design
and functions.
Precise specifications for the NXP i.MX6UL processor can be found in
the CPU datasheets and/or reference manuals.
1.2 Copyrights/Trade arks
Ethernet® is a registered trademark of XEROX Corporation.
All other products and trademarks mentioned in this manual are property
of their respective owners.
All rights reserved. Specifications may change any time without
notification.
1.3 Standards
DAVE E bedded Syste s is certified to ISO 9001 standards.
1.4 Disclai ers
DAVE E bedded Syste s does not assume any responsibility about
availability, supplying and support regarding all the products mentioned in
this manual that are not strictly part of the AXEL ULite CPU module.
AXEL ULite CPU modules are not designed for use in life support
appliances, devices, or systems where malfunction of these products can
reasonably be expected to result in personal injury.
DAVE E bedded Syste s customers who are using or selling these
products for use in such applications do so at their own risk and agree to
fully indemnify DAVE E bedded Syste s for any damage resulting
from such improper use or sale.
1.5 Warranty
DAVE E bedded Syste s is guaranteed against defects in material
and workmanship for the warranty period from the shipment date. During
the warranty period, DAVE E bedded Syste s will at its discretion
decide to repair or replace defective products. Within the warranty period,
the repair of products is free of charge provided that warranty conditions
are observed.
The warranty does not apply to defects resulting from improper or
inadequate maintenance or handling by the customer, unauthorized
modification or misuse, operation outside of the product’s specifications
or improper installation or maintenance.
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DAVE E bedded Syste s will not be responsible for any defects or
damages to other products not supplied by DAVE E bedded Syste s
that are caused by a faulty AXEL ULite module.
1.6 Technical Support
We are committed to making our product easy to use and will help
customers use our CPU modules in their systems.
Technical support is delivered through email to our valued customers.
Support requests can be sent to [email protected] .
Software upgrades are available for download in the restricted access
download area of DAVE Embedded Systems web site:
http://www.dave.eu/reserved-area . An account is required to access this
area and is provided to customers who purchase the development kit
(please contact [email protected] for account requests).
Please refer to our Web site at http://www.dave.eu/products/axel-lite for
the latest product documentation, utilities, drivers, Product Change
Notifications, Board Support Packages, Application Notes, mechanical
drawings and additional tools and software.
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1.7 Related docu ents
Docu ent Location
DAVE Developers Wiki http://wiki.dave.eu/index.php/Main_Page
Tab. 1: Related documents
1.8 Conventions, Abbreviations, Acrony s
Abbreviation Definition
BTN Button
EMAC Ethernet Media Access Controller
GPI General purpose input
GPIO General purpose input and output
GPO General purpose output
PCB Printed circuit board
PMIC Power Manage ent Integrated Circuit
PSU Power supply unit
RTC Real ti e clock
SOC Syste -on-chip
SOM Syste -on- odule
WDT Watchdog
Tab. 2: Abbreviations and acronyms used in this manual
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AXEL ULite Hardware Manual v.1.0.2
Revision History
Version Date Notes
0.0.1 June 2016 First draft (PRELIMINARY)
0.9.0 August 2016 First Release
1.0.0 Septe ber 2016 Release
1.0.1 Dece ber 2018 Minor fixes
1.0.2 August 2019 Minor fixes
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