The cause for each reset is stored in the crl_apb.RESET_REASON register. Table: Reset Reason Register summarizes the different values for the reset reason register.
Table 38-2: Reset Reason Register
|
Bit Field
|
Bit
|
Description
|
|
external_por
|
0
|
External POR; the PS_POR_B reset signal pin was asserted.
|
|
internal_por
|
1
|
Internal POR. A system error triggered a POR reset.
|
|
pmu_sys_reset
|
2
|
Internal system reset. A system error triggered a system reset.
|
|
psonly_reset_req
|
3
|
PS-only reset. Write to PMU_GLOBAL.GLOBAL_RESET [PS_ONLY_RST].
|
|
srst
|
4
|
External system reset; the PS_SRST_B reset signal pin was asserted.
|
|
soft
|
5
|
Software system reset. Write to RESET_CTRL [soft_reset].
|
|
debug_sys
|
6
|
Software debugger reset. Write to BLOCKONLY_RST [debug_only].
|