Table 4-4 shows
the boot mode options available for selection by the default boot mode select pins.
Users have the option to program the device to customize the boot modes selectable
in the boot-up table as well as the boot mode select pin GPIOs used.
Table 4-4 Device Default Boot
Modes
Boot Mode |
GPIO24 (Default boot mode select pin
1) |
GPIO32 (Default boot mode select pin
0) |
Parallel IO |
0 |
0 |
SCI / Wait Boot(1) |
0 |
1 |
CAN(MCAN-NONFD) |
1 |
0 |
Flash (USB)(2) |
1 |
1 |
(1) SCI boot mode is used as a wait
boot mode as long as SCI continues to wait for an 'A' or 'a' during the SCI
autobaud lock process.
(2) If the default Flash entry
address is not programmed, the boot mode switches to USB Boot for those devices
that include the USB peripheral. On devices without a USB, the action is to
enter the ITRAP ISR if the default Flash entry address is not programmed. The
switch to USB boot is only supported for the default Flash entry address option
and not all entry address options.
Refer to Section 4.7.8.1 for functional details of the boot modes.
Refer to Section 4.7.9 for GPIOs used for selecting the boot modes.
Refer to Section 4.4 for details of boot configurations.
Note: All the peripheral boot modes that
are supported use the first instance of the peripheral module (SCIA, SPIA, I2CA,
MCANA, and so on). Whenever these boot modes are referred to in this chapter, such
as SCI boot, the boot mode is actually referring to the first module instance, which
means the SCI boot on the SCIA port. The same applies to the other peripheral boot
modes.