The SPI_EN and IO_CFG_INTF pins must be configured external to the device by using jumpers on the board or by bootstrapping. The following table provides the SPI_EN and IO_CFG_INTF pin configuration details for SPI master programming.
| SPI Pins | SPI Master Programming | ||
|---|---|---|---|
| SPI_EN | IO_CFG_INTF | IAP | Auto Update |
| 0 | x | No | No |
| 1 | 0 (SPI slave mode) | No | No |
| 1 | 1 (SPI master mode) | Yes | Yes |