MMCCMB2107 Freescale, MMCCMB2107 Datasheet - Page 134

• Manufacturer Part Number: MMCCMB2107
• Manufacturer: Freescale

Specifications of MMCCMB2107

• Lead Free Status / RoHS Status: Not Compliant

Reset Controller Module
5.6.2 Reset Status Register
Technical Data
134
Address: 0x000c4_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 the
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.
SOFT— Software Reset Flag
WDR — Watchdog Timer Reset Flag
POR — Power-On Reset Flag
SOFT indicates that the last reset was caused by software.
WDR indicates that the last reset was caused by a watchdog timer
timeout.
POR indicates that the last reset was caused by a power-on reset.
Freescale Semiconductor, Inc.
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1 = Last reset caused by software
0 = No software reset
1 = Last reset caused by watchdog timer timeout
0 = No watchdog timer timeout reset
1 = Last reset caused by power-on reset
0 = Last reset not caused by power-on reset
Bit 7
0
0
Figure 5-3. Reset Status Register (RSR)
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= Writes have no effect and the access terminates without a transfer error exception.
Reset Controller Module
6
0
0
SOFT
5
WDR
4
POR
Reset dependent
3
EXT
2
MMC2107 – Rev. 2.0
LOC
1
MOTOROLA
Bit 0
LOL