The nRF5340 Audio Development Kit (DK) has a range of solder bridges for enabling or disabling selected functionalities. Changes to the solder bridges are not needed for normal use of the DK.
| Designator | Description | Default state | Layer |
|---|---|---|---|
| SB1 | Short to connect digital microphone DOUT to P1.06 | Open | Top |
| SB2 | Cut to disconnect P0.12 from TRACE | Shorted | Top |
| SB3 | Short to connect PMIC MODE to VOUTB, must not be shorted while SB4 is shorted | Open | Top |
| SB4 | Cut to disable PMIC MODE from GND, must not be shorted while SB3 is shorted | Shorted | Top |
| SB5 | Cut to enable VBAT current measurements on P6 | Shorted | Top |
| SB6 | Cut to enable HW CODEC 1.2V current measurements on P7 | Shorted | Top |
| SB7 | Cut to enable HW CODEC 1.8V current measurements on P8 | Shorted | Top |
| SB8 | Cut to enable VDD_nRF current measurements on P9 | Shorted | Top |
| SB9 | Cut to disconnect filter from OUTP | Shorted | Top |
| SB10 | Cut to disconnect filter from OUTN | Shorted | Top |
| SB11 | Cut to disconnect the LED for the HW CODEC GPIO | Shorted | Top |
| SB12 | Cut to disconnect digital microphone POWER from the HW CODEC | Shorted | Bottom |
| SB13 | Cut to disconnect digital microphone DATA from the HW CODEC | Shorted | Bottom |
| SB14 | Cut to disconnect digital microphone CLOCK from the HW CODEC | Shorted | Bottom |
| SB15 | Short to connect AUX I2S MCLK to HW CODEC MCLK1 | Open | Top |
| SB16 | Short to connect AUX I2S MCLK to HW CODEC MCLK2 | Open | Top |
| SB17 | Short to connect P5 pin 6 to GND | Open | Top |
| SB18 | Cut to disconnect P5 pin 6 from SHIELD DETECT | Shorted | Top |
| SB19 | Cut to disconnect RTS and CTS flow control lines on UART1 | Shorted | Top |
| SB20 | Cut to disconnect RTS and CTS flow control lines on UART2 | Shorted | Top |
| SB21 | Cut to disconnect nRF53 RESET from RESET button when debug is disabled | Shorted | Top |
| SB22 | Short to permanently connect RESET button to nRF53 RESET | Open | Top |
| SB23 | Cut to disconnect RESET button from interface MCU | Shorted | Top |
| SB24 | Short to bypass analog switch for MCLK | Open | Top |