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SLX-SOM-BSB Configuration Switches |
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The S4 DIP switch on SLX-SOM-BSB determines boot selection for the i.MX 6SoloX processor.
The individual switches assignment is as follows (refer to the SLX-SOM-BSB baseboard schematic https://emcraft.com/products/685#hardware and i.MX 6SoloX Applications Processor Reference Manual):
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Connects to i.MX 6SoloX pin |
Factory settings |
Comment |
| S4.1 |
GPIO4_IO15 |
On |
nPWRDOWN, controls Raspberry Pi power on P12 when ON
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| S4.2 |
Not connected |
On |
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| S4.3 |
SRC_BOOT_MODE0 |
On |
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| S4.4 |
SRC_BOOT_MODE1 |
Off |
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| S4.5 |
SRC_BOOT_CFG04 |
Off |
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| S4.6 |
SRC_BOOT_CFG05 |
On |
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| S4.7 |
SRC_BOOT_CFG06 |
On |
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| S4.8 |
SRC_BOOT_CFG07 |
Off |
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S4.3 and S4.4 control the boot selection (BOOT_MODE) as below:
| BOOT_MODE |
S4.3 |
S4.4 |
| eFUSEs |
On |
On |
| Serial Downloader |
Off |
On |
| Internal Boot |
On |
Off |
| Reserved |
Off |
Off |
When S4.3 and S4.4 are set to the Internal Boot mode, the rest of the S4 DIP pins defines the selection of boot media as below:
| Boot Media |
S4.5 |
S4.6 |
S4.7 |
S4.8 |
| SPI5 |
Off |
Off |
On |
On |
| NAND |
Off |
On |
On |
Off |
| SD |
On |
On |
Off |
On |
When the kit is shipped, switches S4.3-8 are set to boot from NAND.
i.MX 6SoloX SOMs are shipped with eFUSEs intact.
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