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MOTOROLA
Chapter 6. System Integration Module (SIM)
6-7
Programming Model
6.2.5 Power Management Register (PMR)
The power management register (PMR),
Figure 6-5, is used to control the various
low-power options including low-power sleep, low-power stop, and powering down
individual on-chip modules.
Table 6-4. SPR Field Descriptions
Bits
Fields
Description
15, 7
ADC,
ADCEN
Address decode conict. This bit is set when an address matches against two chip selects. If
ADCEN is also set, the bus cycle is terminated with an access error exception.
14, 6
WPV,
WPVEN
Write protect violation. This bit is set when a write access is attempted to an area for which the
chip select is set to read only. If WPVEN is also set, the bus cycle is terminated with an access
error exception.
13, 5
SMV,
SMVEN
Stopped module violation. This bit is set when an access is attempted to an on-chip peripheral
whose clock has been stopped. If SMVEN is also set, the bus cycle is terminated with an access
error exception.
12, 4
PE, PEEN Peripheral error. This bit is set when an access to an on-chip peripheral is terminated with a
transfer error. If PEEN is also set, the bus cycle is terminated with an access error exception.
11, 3
HWT,
HWTEN
Hardware watchdog timeout. This bit is set when the hardware watchdog timer has reached its
programmed timeout value. If HWTEN is also set, the bus cycle is terminated with an access
error exception.
10, 2
RPV,
RPVEN
Read protect violation. This bit is set when a read access is attempted to an area for which the
chip select is set to write only. If RPVEN is also set, the bus cycle is terminated with an access
error exception.
9, 1
EXT,
EXTEN
External transfer error. This bit is set when an external transfer error is reported to the SIM on
TEA. If EXTEN is also set, the bus cycle is terminated with an access error exception.
8, 0
SUV,
SUVEN
Supervisor/user violation. This bit is set when a user mode access is attempted to an area for
which the chip select is set to supervisor only. If SUVEN is also set, the bus cycle is terminated
with an access error exception.