RM0046 Mode Entry Module (MC_ME)
Doc ID 16912 Rev 5 169/936
Any modification of the mode configuration register of the currently selected mode will not
be taken into account immediately but on the next request to enter this mode. This means
that transition requests such as RUN0…3 Æ RUN0…3, DRUN Æ DRUN, SAFE Æ SAFE,
and TEST Æ TEST are considered valid mode transition requests. As soon as the mode
request is accepted as valid, the S_MTRANS bit is set till the status in the ME_GS register
matches the configuration programmed in the respective ME_<mode>_MC register.
Note: It is recommended that software poll the S_MTRANS bit in the ME_GS register after
requesting a transition to HALT0 or STOP0 modes.
6.4.2 Modes Details
RESET Mode
The device enters this mode on the following events:
● from SAFE, DRUN, RUN0…3, or TEST mode when the TARGET_MODE bit field of the
ME_MCTL register is written with “0000”
● from any mode due to a system reset by the MC_RGM because of some non-
recoverable hardware failure in the system (see the MC_RGM chapter for details)
Transition to this mode is instantaneous, and the system remains in this mode until the reset
sequence is finished. The mode configuration information for this mode is provided by the
SAFE
DRUN
TEST
RESET
RUN0
RUN1
HALT0
STOP0
SYSTEM MODES USER MODES
software
request
non-recoverable
failure
RUN2
RUN3
recoverable
hardware failure
Figure 63. MC_ME Mode Diagram
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