The following table shows the default jumper settings.
Jumper | Default | Function |
---|---|---|
J2 | Closed | VDDBU current measurement |
J17 | Open | Erases SAM3U firmware (not populated, reserved for factory configuration, should never be used by the end user). |
J19 | Open | Enables JTAG-OB (closed=disables JTAG-OB) |
J20 | Open | Enables JTAG-CDC (closed=disables JTAG-CDC) |