MPC5604B/C Microcontroller Reference Manual, Rev. 8
Freescale Semiconductor 159
NOTE
Byte and half-word write accesses are not allowed to this register.
Table 8-11. Mode Configuration Registers (ME_<mode>_MC) Field Descriptions
Field Description
PDO I/O output power-down control — This bit controls the output power-down of I/Os.
0 No automatic safe gating of I/Os used and pads power sequence driver is enabled
1 In SAFE/TEST modes, outputs of pads are forced to high impedance state and pads power
sequence driver is disabled. The inputs are level unchanged. In STOP mode, only pad power
sequence driver is disabled but the state of the output is kept. In STANDBY mode, power sequence
driver and all pads except those mapped on wakeup lines are not powered and therefore high
impedance. Wakeup line configuration remains unchanged.
MVRON Main voltage regulator control — This bit specifies whether main voltage regulator is switched off or
not while entering this mode.
0 Main voltage regulator is switched off
1 Main voltage regulator is switched on
DFLAON Data flash power-down control — This bit specifies the operating mode of the data flash after entering
this mode.
00reserved
01 Data flash is in power-down mode
10 Data flash is in low-power mode
11 Data flash is in normal mode
Note: If the flash memory is to be powered down in any mode, then your software must ensure that
reset sources are configured as long resets in the RGM_FESS register (see Section 9.3.1.7,
Functional Event Short Sequence Register (RGM_FESS)).
CFLAON Code flash power-down control — This bit specifies the operating mode of the program flash after
entering this mode.
00reserved
01Code flash is in power-down mode
10Code flash is in low-power mode
11Code flash is in normal mode
FMPLLON frequency modulated phase locked loop control
0 frequency modulated phase locked loop is switched off
1 frequency modulated phase locked loop is switched on
FXOSCON fast external crystal oscillator (4-16 MHz) control
0 fast external crystal oscillator (4-16 MHz) is switched off
1 fast external crystal oscillator (4-16 MHz) is switched on
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