2.9.1.7.13 SPI Memory Boot Configuration (Second Word)
This word is the second word used to add an external SPI Flash memory in the boot sequence. It allows to select the SPI Flash driver (Standard driver or Legacy driver) used by the ROM Code.
Warning: To avoid any
malfunctioning, the user must not write the "DO NOT USE (DNU)" bits.
| Name: | MEM_CFGx[1] |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | ||
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | ||
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | ||
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | SPI_DRIVER | |||
| Access | |||||||||
| Reset |
Bits 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 – SPI_DRIVER SPI Driver Selection
| Value | Description |
|---|---|
| 0 | Standard SPI driver (AT25, 4-byte Address mode) |
| 1 | Legacy SPI driver (3-byte Address mode) |