2.9.1.7.4 QSPI Memory Boot Configuration (First Word)
This word is the first word used to add an external QSPI Flash memory in the boot sequence. It allows to define the interface (type and instance) and the IOSET.
Warning: To avoid any
malfunctioning, the user must not write the "DO NOT USE (DNU)" bits.
| Name: | MEM_CFGx[0] |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| DNU | DNU | DNU | DNU | DNU | DNU | DNU | DNU | ||
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| DNU | DNU | DNU | DNU | DNU | DNU | DNU | DNU | ||
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| DNU | DNU | DNU | DNU | IFACE_TYPE[3:0] | |||||
| Access | |||||||||
| Reset | |||||||||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| INSTANCE_ID[3:0] | IFACE_IOSET[3:0] | ||||||||
| Access | |||||||||
| Reset | |||||||||
Bits 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 – DNU DO NOT USE
Bits 11:8 – IFACE_TYPE[3:0] Interface Type
| Value | Description |
|---|---|
| 0 | Memory boot interface disabled |
| 1 | Boot on QSPI memory enabled |
Bits 7:4 – INSTANCE_ID[3:0] IP Instance ID
| Value | Description |
|---|---|
| 0 | QSPI0 |
Bits 3:0 – IFACE_IOSET[3:0] Memory IOSET
| Value | Description |
|---|---|
| 0 | PIO set 1 |