Kontron SMARC Evaluation Carrier - Manual (Page 30)

User’s Guide
30 www.kontron.com
7 Jumpers
7.1 Jumper J34 - LID#
J34 is used to simulate LID-open and LID-closed condition, for test and development.
Jumper Position Function
J34
Inserted Simulates LID closed condition
Not inserted Simulates LID open condition
7.2 Jumper J35 – TEST#
J35 is used for Module specific test purposes. In normal operation, this jumper should be open.
Jumper Position Function
J35
Inserted Module specific test – check Module documentation
Not inserted Normal operation
7.3 Jumpers J37, J38 and J39 – Boot Select
J37, J38 and J39 are used to select the boot device. The following table is transcribed form the SMARC Module
specification. Some Modules may not support all options; refer to the Module documentation. The meaning of “boot”
may vary as well – check the Module documentation.
J39 J38 J37 Boot Device
Inserted Inserted Inserted Carrier SATA
Inserted Inserted Not inserted Carrier SD Card
Inserted Not inserted Inserted Carrier eMMC Flash
Inserted Not inserted Not inserted Carrier SPI
Not inserted Inserted Inserted Module device (NAND, NOR) – vendor specific
Not inserted Inserted Not inserted Remote boot (GBE, serial) – vendor specific
Not inserted Not inserted Inserted Module eMMC Flash
Not inserted Not inserted Not inserted Module SPI