mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 139

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
5. Once an appropriately-high interrupt request level arrives, the interrupt controller signals its
6. The low-power mode control logic senses the request signal and re-enables the appropriate
7. With the processor clocks enabled, the core processes the pending interrupt request.
Bits
6–4
3–0
7
presence, and the SIM responds by asserting the request to exit low-power mode.
clocks.
ENBSTOP
XLPM_IPL
Only fixed (external) interrupt can bring a device out of stop mode. To exit
from other low-power modes, such as doze or wait, either fixed or
programmable interrupts may be used; however, the module generating the
interrupt must be enabled in that particular low-power mode.
Name
Address
—
XLPM_IPL[2:0]
Reset
Field ENBSTOP
R/W
000
001
010
011
100
101
11x
Figure 7-1. Low-Power Interrupt Control Register (LPICR)
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
Enable low-power stop mode.
0 Low-power stop mode disabled
1 Low-power stop mode enabled. Once the core is stopped and the signal to enter stop
Exit low-power mode interrupt priority level. This field defines the interrupt priority level
needed to exit the low-power mode.Refer to
Reserved, should be cleared.
1/0
mode is asserted, processor clocks can be disabled.
7
Table 7-2. LPICR Field Descriptions
6
0
Table 7-3. XLPM_IPL Settings
Interrupts Level Needed to Exit Low-Power Mode
Interrupt request levels [2-7] exit low-power mode
Interrupt request levels [3-7] exit low-power mode
Interrupt request levels [4-7] exit low-power mode
Interrupt request levels [5-7] exit low-power mode
Interrupt request levels [6-7] exit low-power mode
Interrupt request level [7] exits low-power mode
XLPM_IPL
Any interrupt request exits low-power mode
1/0
NOTE
IPSBAR + 0x012
0
4
R/W
Description
3
Table
7-3.
Undefined
—
0
Power Management
7-3