The nRF9160 DK has a range of solder bridges for enabling or disabling functionality on the Development Kit (DK). Changes to these are not needed for normal use of the DK.
The following table is a complete overview of the solder bridges on the nRF9160 DK.
| Solder bridge | Default | Function |
|---|---|---|
| SB1 | Closed | Cut to disconnect VDD_GPIO supply to the nRF9160 SiP |
| SB2 | Open | Short to connect DBG_CMD to the SD card reader J8 (not populated by default) |
| SB3 | Closed | Cut to disconnect RTS signal from the nRF52840 SoC |
| SB4 | Closed | Cut to disconnect CTS signal from the nRF52840 SoC |
| SB5 | Closed | Cut to disconnect RXD signal from the nRF52840 SoC |
| SB6 | Closed | Cut to disconnect TXD signal from the nRF52840 SoC |
| SB7 | Closed | Cut to disconnect the 3.0 V USB supply from the interface MCU (U4) |
| SB8 | Closed | Cut to disconnect SWDIO from the nRF52840 SoC |
| SB9 | Closed | Cut to disconnect SWDCLK from the nRF52840 SoC |
| SB10 | Closed | Cut to disconnect the RESET signal from the nRF52840 SoC |
| SB11 | Closed | Cut to disconnect CTS from the nRF9160 SiP |
| SB12 | Closed | Cut to disconnect RTS from the nRF9160 SiP |
| SB13 | Closed | Cut to disconnect RXD from the nRF9160 SiP |
| SB14 | Closed | Cut to disconnect TXD from the nRF9160 SiP |
| SB15 | Closed | Cut to disconnect the RESET button from the nRF9160 reset pin when the interface MCU is disconnected |
| SB16 | Open | Short to connect the RESET button to the RESET pin on the Arduino interface |
| SB17 | Open | Short to connect the RESET pin on the Arduino interface to the nRF9160 reset pin |
| SB18 | Open | Short to connect the RESET pin on the Arduino interface to the nRF9160 reset pin when the interface MCU is disconnected |
| SB19 | Open | Short to connect the RESET pin on the Arduino interface to the interface MCU Boot when the interface MCU is disconnected |
| SB20 | Closed | Cut to disconnect IOEXP_IRQ from nRF9160 GPIO when the I/O expander is enabled |
| SB21 | Open |
Short to connect the RESET button to the nRF52840 reset pin when the interface MCU is disconnected |
| SB22 | Open | Short to connect the RESET button to the RESET pin of the nRF52840 |
| SB23 | Closed | Cut to disconnect external memory chip select from P0.25 |
| SB24 | Open | Short to enable power supply of the external device when using the Debug out connector (P19) |
| SB25 | Open | Short to bypass the USB detect switch (Q7) |
| SB26 | Closed | Cut to permanently disable SHIELD DETECT feature |
| SB27 | Open | Short to permanently enable the SHIELD DETECT feature |
| SB28 | Open | Short to supply VDD to bottom UART debug connector |
| SB29 | Open | Short to bypass the USB supply switch (U24) |
| SB30 | Open | Short to bypass the external supply switch U25 |
| SB31 | Open | Short to bypass the VIN3–5 V switch U26 |
| SB32 | Closed | Cut to disconnect supply to LDO (U28) |
| SB33 | Closed | Cut to disconnect the VSUPPLY and VDD_nRF' |
| SB34 | Open | Short to connect VDD_nRF and VDD_nRF' |
| SB35 | Closed | Cut to disconnect VDD and VIO |
| SB36 | Open | Short to bypass the VDD_IMCU switch (U30) |
| SB37 | Open | Short to bypass the VDD_IMCU_3V3 switch (U31) |
| SB38 | Open | Short to bypass switch U33 |
| SB39 | Closed | Cut to disconnect supply from Arduino interface |
| SB40 | Open | Short to bypass Arduino 5 V reverse protection diode D11 |
| SB41 | Open | Short to permanently connect SIM VDD, bypass Sim current measurement connector |