NXP Semiconductors K32 L2A Series, Reference Manual, Page: 293 / 1379

Data Phase: The ReadMemory command has a data phase. Since the target (Kinetis
Bootloader) works in slave mode, the host need pull data packets until the number of
bytes of data specified in the byteCount parameter of ReadMemory command are
received by host.
Response: The target (Kinetis Bootloader) will return a GenericResponse packet with a
status code either set to kStatus_Success upon successful execution of the command, or
set to an appropriate error status code.
Table 14-51. ReadMemory Response Status Codes
Status Code Description
kStatus_FLASH_Success (0) Executed successfully
kStatus_OutOfRange (3) Address is out of memory range
kStatusMemoryRangeInvalid (10200) Memory range is invalid
14.3.9 Bootloader Exit state
The Kinetis Bootloader tries to reconfigure the system back to the reset state in the
following situations:
• After completion of an Execute command, but before jumping to the specified entry
point.
• After a peripheral detection timeout, but before jumping to the application entry
point.
In general, all peripherals are reset. However, the application must consider the following
situations:
• If VLPR mode is active during a system boot, then the bootloader will exit VLPR
mode on entry (to bootloader operation), and VLPR mode will not be restored after
exiting from the bootloader.
• If high speed clocking is selected in the Bootloader Configuration Area, then high
speed clocks will be retained after exiting from the bootloader.
• Upon exit from the bootloader, the bootloader restores the VTOR register to its
default value (0x0).
Chapter 14 Kinetis ROM Bootloader
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 293