5.5.1.6 Boot External Notification I/O Pin Fuse
| Name: | BOOT_GPIOSEL |
| Offset: | 0x0028 |
| Reset: | 0xFFFFFFFF |
| Property: | – |
The bit fields in this fuse select the pin and its signal properties for the Boot External Notification signal at start-up.
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| SLEWLIM | ODRAIN | POL | |||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 1 | 1 | 1 |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| GPIOPORTSEL[3:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | |||||
| Reset | 1 | 1 | 1 | 1 | |||||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| ENABLE | GPIOPINSEL[4:0] | ||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | |||
Bit 20 – SLEWLIM Slew Rate Control for Boot External Notification Signal
| Value | Name | Description |
|---|---|---|
| 0 | FALSE | The slew rate is not limited (fast rise/fall time operation) |
| 1 | TRUE | The slew rate is limited |
Bit 19 – ODRAIN Open Drain Control for the Boot External Notification Signal
| ODRAIN = 0 | ODRAIN = 1 | |
| POL = 0 | Tristate | Drive high |
| POL = 1 | Drive low | Drive low |
| Value | Name | Description |
|---|---|---|
| 0 | FALSE | The selected fault source is open drain drive |
| 1 | TRUE | The selected fault source is normal drive |
Bit 17 – POL Select Polarity in Normal Drive Mode for Boot External Notification Signal
| Value | Name | Description |
|---|---|---|
| 0 | FALSE | The selected fault source is active-high |
| 1 | TRUE | The selected fault source is active-low |
Bits 11:8 – GPIOPORTSEL[3:0] GPIO Port Select for Boot External Notification Signal
Note: Select only a port that exists on the device.
| Value | Name | Description |
|---|---|---|
| 0x0 | PORTA | Port A |
| 0x1 | PORTB | Port B |
| 0x2 | PORTC | Port C |
| 0x3 | PORTD | Port D |
| Other | - | No Boot External Notification signal used |
Bit 7 – ENABLE Enable Boot External Notification Signal
| Value | Name | Description |
|---|---|---|
| 0 | DISABLE | The Boot External Notification signal is disabled |
| 1 | ENABLE | The Boot External Notification signal is enabled |
Bits 4:0 – GPIOPINSEL[4:0] GPIO Pin Select for Boot External Notification Signal
Note: Select only a pin that exists on the device.
| Value | Name | Description |
|---|---|---|
| 0x00 | PIN00 | Pin 0 |
| 0x01 | PIN01 | Pin 1 |
| 0x02 | PIN02 | Pin 2 |
| 0x03 | PIN03 | Pin 3 |
| 0x04 | PIN04 | Pin 4 |
| 0x05 | PIN05 | Pin 5 |
| 0x06 | PIN06 | Pin 6 |
| 0x07 | PIN07 | Pin 7 |
| 0x08 | PIN08 | Pin 8 |
| 0x09 | PIN09 | Pin 9 |
| 0x0A | PIN10 | Pin 10 |
| 0x0B | PIN11 | Pin 11 |
| 0x0C | PIN12 | Pin 12 |
| 0x0D | PIN13 | Pin 13 |
| 0x0E | PIN14 | Pin 14 |
| 0x0F | PIN15 | Pin 15 |
| 0x10 | PIN16 | Pin 16 |
| 0x11 | PIN17 | Pin 17 |
| 0x12 | PIN18 | Pin 18 |
| 0x13 | PIN19 | Pin 19 |
| 0x14 | PIN20 | Pin 20 |
| 0x15 | PIN21 | Pin 21 |
| 0x16 | PIN22 | Pin 22 |
| 0x17 | PIN23 | Pin 23 |
| 0x18 | PIN24 | Pin 24 |
| 0x19 | PIN25 | Pin 25 |
| 0x1A | PIN26 | Pin 26 |
| 0x1B | PIN27 | Pin 27 |
| 0x1C | PIN28 | Pin 28 |
| 0x1D | PIN29 | Pin 29 |
| 0x1E | PIN30 | Pin 30 |
| 0x1F | PIN31 | Pin 31 |