MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 145

• Manufacturer Part Number: MMC2114
• Description: M CORE Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

5.6.2 Reset Status Register
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
MOTOROLA
Address: 0x00c4_0001
Reset:
Read:
Write:
The Reset Status Register (RSR) contains a status bit for every reset
source. When reset is entered, the cause of the reset condition is latched
along with a value of 0 for the other reset sources that were not pending
at the time of the reset condition. These values are then reflected in
RSR. One or more status bits may be set at the same time. The cause
of any subsequent reset is also recorded in the register, overwriting
status from the previous reset condition.
RSR can be read at any time. Writing to RSR has no effect.
LVD — Low-Voltage Detect
SOFT — Software Reset Flag
WDR — Watchdog Timer Reset Flag
This bit indicates that the last reset state was caused by an LVD reset.
SOFT indicates that the last reset was caused by software.
WDR indicates that the last reset was caused by a watchdog timer
timeout.
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = Last reset state was caused by an LVD reset
0 = Last reset state was not caused by an LVD reset
1 = Last reset caused by software
0 = Last reset not caused by software
1 = Last reset caused by watchdog timer timeout
0 = Last reset not caused by watchdog timer timeout
Bit 7
0
0
Figure 5-3. Reset Status Register (RSR)
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= Writes have no effect and terminate without transfer error exception.
Reset Controller Module
LVD
6
SOFT
5
WDR
4
Reset dependent
POR
3
Memory Map and Registers
EXT
2
Reset Controller Module
Advance Information
LOC
1
Bit 0
LOL
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