TS-8820-jumpers

From Technologic Systems Manuals

The TS-8820 has two sets of jumpers, one located near the System-on-Module (inside the enclosure), and another near the system power, red, and green LEDs. These jumpers control a number of aspects of the platform's behavior. The jumpers are labeled on the silkscreen rather than numbered:

Label Description
Force SD Boot When jumper is set, boot kernel and Debian from the SD card. Otherwise boot kernel and Debian from eMMC.
U_Boot When jumper is set, U-Boot attempts to boot from USB before dropping to a U-Boot shell. Otherwise boot straight to Debian.
No Chrg When jumper is set, disable charging of the TS-SILO Supercapacitors. Beneficial for early development and testing.
Term. CAN When jumper is set, adds a 124 ohm termination resistor across the isolated CAN H and L pins.
Term. 485 When jumper is set, adds a 124 ohm termination resistor across the isolated TS-485 + and - pins.