The nRF7002 companion IC is connected to the nRF5340 System on Chip (SoC) using Quad Serial Peripheral Interface (QSPI) and a set of control signals.
The control signals are also available on header P24, while the QSPI by default is not connected. These can be connected to P24 by shorting the solder bridges SB20—SB25.
| nRF5340 | nRF7002 | Default use |
|---|---|---|
| P0.12 | BUCKEN | Enable power to nRF7002 |
| P0.13 | QSPI_DATA0 | Data line 0 |
| P0.14 | QSPI_DATA1 | Data line 1 |
| P0.15 | QSPI_DATA2 | Data line 3 |
| P0.16 | QSPI_DATA3 | Data line 3 |
| P0.17 | QSPI_CLK | Clock |
| P0.18 | QSPI_SS | Slave select |
| P0.23 | HOST_IRQ | Interrupt request to host |
| P0.24 | COEX_GRANT | Coexistence grant to host |
| P0.28 | COEX_REQ | Coexistence request from host |
| P0.29 | SW_CTRL1 | Switch control 1 |
| P0.30 | COEX_STATUS0 | Coexistence status |
| P0.31 | IOVDD | Enable power to I/O interface |