Microcontroller User's Manual

MOTOROLA Chapter 28. Reset Controller Module 28-5
Memory Map and Registers
Table 28-4. RSR Field Descriptions
Bit(s) Name Description
7 — Reserved, should be cleared.
6 LVD Low voltage detect. Indicates that the last reset state was caused by an LVD reset.
1 Last reset state was caused by an LVD reset
0 Last reset state was not caused by an LVD reset
5 SOFT Software reset flag. Indicates that the last reset was caused by software.
1 Last reset caused by software
0 Last reset not caused by software
4 WDR Watchdog timer reset flag. Indicates that the last reset was caused by a watchdog timer timeout.
1 Last reset caused by watchdog timer timeout
0 Last reset not caused by watchdog timer timeout
3 POR Power-on reset flag. Indicates that the last reset was caused by a power-on reset.
1 Last reset caused by power-on reset
0 Last reset not caused by power-on reset
2 EXT External reset flag. Indicates that the last reset was caused by an external device asserting the
external RSTI
pin.
1 Last reset state caused by external reset
0 Last reset not caused by external reset
1 LOC Loss-of-clock reset flag. Indicates that the last reset state was caused by a PLL loss of clock.
1 Last reset caused by loss of clock
0 Last reset not caused by loss of clock
0 LOL Loss-of-lock reset flag. Indicates that the last reset state was caused by a PLL loss of lock.
1 Last reset caused by a loss of lock
0 Last reset not caused by loss of lock