Kontron SMARC-sA3874i Manual de usuario Pagina 4

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User’s Guide
4.2 JTAG ...................................................................................................................................... 64
4.2.1 Connector J2 CPU JTAG ...................................................................................................... 64
4.2.2 Connector J1 CPLD JTAG .................................................................................................. 65
5 ULP-COM sA3874i Special Features ........................................................................... 67
5.1 Watchdog Timer ....................................................................................................................... 67
5.2 PMU GPIO ............................................................................................................................... 67
5.3 ULP-COM sA3874i I/O ............................................................................................................... 68
5.4 Temperature Sensor .................................................................................................................. 71
5.5 ULP-COM sA3874i Power Management .......................................................................................... 71
5.6 Board ID EEPROM ..................................................................................................................... 71
6 Thermal Design Considerations ................................................................................ 72
6.1 Thermal Management ................................................................................................................ 72
6.2 Heat Spreader Dimensions ......................................................................................................... 72
6.3 Thermal Parameters .................................................................................................................. 73
6.4 Operation without a Heat Spreader / Heat Sink ............................................................................. 73
7 ULP-COM sA3874i Software ..................................................................................... 74
7.1 Introduction ........................................................................................................................... 74
7.2 Linux EZ Software Development Kit ............................................................................................. 74
7.3 ULP-COM sA3874i Linux Modifications ......................................................................................... 74
7.4 Kontron BSP (Board Support Package) ......................................................................................... 74
8 ULP-COM sA3874i Boot Brief ................................................................................... 75
8.1 ULP-COM sA3874i Boot Up Sequence ........................................................................................... 75
8.2 BOOT Selection ........................................................................................................................ 76
9 ULP-COM sA3874i Programming Methods ................................................................... 77
9.1 External SD Card Programming .................................................................................................... 77
9.2 SPI Programming ..................................................................................................................... 77
9.3 eMMC Programming .................................................................................................................. 77
10 Appendix A: Major Components BOM ......................................................................... 78
11 Appendix B: Document Revision History .................................................................... 81
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