NXP Semiconductors UM11227 - SIM MCU Mode Control

NXP Semiconductors
UM11227
NTM88 family of tire pressure monitor sensors
UM11227 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 6 — 24 April 2020
155 / 205
10.22.2 SIM MCU mode control
aaa-031072
System clocks derived
from ICS module
System clocks derived
from external pins
- TMODE field
Initialized to Test Functional
- CSS bit cleared
POR Power-on reset started
System clocks derived
from ICS module
Execute POR Reset Sequence
User Mode Capture
from MS pin
Optionally write TC
Optionally write TMODE
RUN in user modes
1. The system is configured for test when the TC field in the SIMTCSC register is configured appropriately.
User Mode Forced
to User Functional
Execute Reset Sequence
User Mode Capture
from MS pin
Execute Reset Sequence
Any system
reset?
no
CSS bit = 0?
yes no
yes
yes
yes
yes
yes
no
no
no
no
RESET = 0
or BDFR caused
reset?
Configured
for test
1
?
System clocks derived
from external pins
Reset sequence
complete?
Any system
reset?
Optionally write TC
Optionally write TMODE
RUN in test modes
Figure 51. SIM MCU mode control