
SMARC-sAMX8X User Guide. Rev. 1.1
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Table of Contents
Symbols .................................................................................................................................................................................................................6
Table of Contents ...............................................................................................................................................................................................9
List of Tables......................................................................................................................................................................................................10
List of Figures ....................................................................................................................................................................................................10
1/ Introduction...........................................................................................................................................................................................11
2/ Description............................................................................................................................................................................................12
2.1. SMARC™ Computer-on-Modules........................................................................................................................................................12
2.2. Main characteristics................................................................................................................................................................................13
2.3. Product Variants and Accessories......................................................................................................................................................13
2.4. SMARC-sAMX8X Feature Set ...............................................................................................................................................................14
3/ System Specifications.......................................................................................................................................................................15
3.1. Component Main Data.............................................................................................................................................................................15
3.2. Environmental Conditions .....................................................................................................................................................................16
3.3. Functional Block Diagram......................................................................................................................................................................18
4/ Board and Connectors ......................................................................................................................................................................19
4.1.1. Connectors ...............................................................................................................................................................................................19
4.2. Mainboard view and I/O locations .....................................................................................................................................................19
4.3. Bottom Side...............................................................................................................................................................................................20
4.4. Mechanical Drawings .............................................................................................................................................................................21
4.5. Thermal Considerations........................................................................................................................................................................22
5/ Pin Definitions.....................................................................................................................................................................................23
5.1. Processor Support ...................................................................................................................................................................................23
5.2. System Memory Support ......................................................................................................................................................................23
5.3. eMMC Flash Memory..............................................................................................................................................................................24
5.4. SMARC Connector....................................................................................................................................................................................24
5.5. Pinout of SMARC sAMX8X Connector ............................................................................................................................................... 25
5.5.1. Pinout of SMARC sAMX8X Topside Connector............................................................................................................................ 25
5.5.2. Pinout of SMARC sAMX8X Bottom Side Connector...................................................................................................................28
6/ Installation...........................................................................................................................................................................................34
6.1. Boot Process..............................................................................................................................................................................................34
6.2. PCIe Switch options ................................................................................................................................................................................34
6.3. Configurable Watchdog......................................................................................................................................................................... 35
6.4. RTC Current Consumption....................................................................................................................................................................36
6.5. UART Interfaces .......................................................................................................................................................................................36
6.6. Power Control........................................................................................................................................................................................... 37
6.6.1. Power Supply......................................................................................................................................................................................... 37
6.6.2. Power Button (POWER_BTN#)........................................................................................................................................................ 37
6.6.3. Power Bad Signal (VIN_POWER_BAD#)....................................................................................................................................... 37
6.6.4. Reset Button (RESET_IN#) ............................................................................................................................................................... 37
7/ Bootloader Operation.......................................................................................................................................................................38
7.1. Copyrights and Licensing of U-Boot ..................................................................................................................................................38
7.2. Bootloader Quickstart............................................................................................................................................................................38
7.3. Bootloader Commands..........................................................................................................................................................................39
7.4. Kontron Bootloader Command Extensions ....................................................................................................................................39
7.4.1. kboardinfo - Kontron Board Information......................................................................................................................................40
7.4.2. md5sum – MD5 Message Digest ....................................................................................................................................................40
7.4.3. Watchdog – CPU Watchdog Control...............................................................................................................................................41
7.5. Bootloader Environment........................................................................................................................................................................41