Reset Generation Module (MC_RGM)
MPC5606S Microcontroller Reference Manual, Rev. 7
1092
Freescale Semiconductor
•
An external reset event
•
A ‘functional’ reset event configured via the RGM_FBRE register to assert the external reset
In this case, the external reset is asserted until the end of Phase3.
31.4.4
Functional Resets
A ‘functional’ reset indicates that an event has occurred after which it can be guaranteed that critical
register and memory content is still intact.
The status flag associated with a given ‘functional’ reset event (RGM_FES.F_
<functional reset>
bit) is
set when the ‘functional’ reset is asserted and the power-on reset is not asserted. It is possible for multiple
status bits to be set simultaneously, and it is software’s responsibility to determine which reset source is
the most critical for the application.
The ‘functional’ reset can be optionally disabled by software writing bit
RGM_FERD.D_
<functional reset>
.
NOTE
The RGM_FERD register can be written only once between two power-on
reset events.
An enabled functional reset will normally trigger a reset sequence starting from the beginning of Phase1.
Nevertheless, the RGM_FESS register enables the further configuring of the reset sequence triggered by
a functional reset. When RGM_FESS.SS_
<functional reset>
is set, the associated ‘functional’ reset will
trigger a reset sequence starting directly from the beginning of Phase3, skipping Phase1 and Phase2. This
can be useful especially in case a functional reset should not reset the flash module.
31.4.5
Standby Entry Sequence
Standby mode can be entered only when the MC_RGM is in Idle. On Standby entry, the MC_RGM moves
to Phase1. The minimum duration counter in Phase1 does not start until Standby mode is exited. On entry
to Phase1 due to Standby mode entry, the resets for all power domains except power domain #0 are
asserted. During this time, RESET is not asserted as the external reset can act as a wakeup for the device.
There is an option to keep the flash inaccessible and in low-power mode on Standby exit by configuring
the DRUN mode before Standby entry so that the flash is in power-down or low-power mode. If the flash
is to be inaccessible, the Phase2 and Phase3 states do not wait for the flash to complete initialization before
exiting, and the reset to the flash remains asserted.
See the MC_ME chapter for details on the Standby and DRUN modes.
NOTE
If the device is in Standby mode and an external reset occurs, the MC_RGM
may not assert the external reset for the duration of the reset sequence even
when RGM_FBRE[BE_EXR] = 0. This incorrect behavior occurs only if
the system releases the external reset before the end of reset sequence
Phase1.
Содержание MPC5602S
Страница 76: ...Overview MPC5606S Microcontroller Reference Manual Rev 7 74 Freescale Semiconductor...
Страница 82: ...Memory Map MPC5606S Microcontroller Reference Manual Rev 7 80 Freescale Semiconductor...
Страница 112: ...Signal Description MPC5606S Microcontroller Reference Manual Rev 7 110 Freescale Semiconductor...
Страница 166: ...Analog to Digital Converter ADC MPC5606S Microcontroller Reference Manual Rev 7 164 Freescale Semiconductor...
Страница 182: ...Boot Assist Module BAM MPC5606S Microcontroller Reference Manual Rev 7 180 Freescale Semiconductor...
Страница 234: ...Clock Description MPC5606S Microcontroller Reference Manual Rev 7 232 Freescale Semiconductor...
Страница 286: ...Crossbar Switch XBAR MPC5606S Microcontroller Reference Manual Rev 7 284 Freescale Semiconductor...
Страница 470: ...e200z0h Core MPC5606S Microcontroller Reference Manual Rev 7 468 Freescale Semiconductor...
Страница 524: ...Enhanced Direct Memory Access eDMA MPC5606S Microcontroller Reference Manual Rev 7 522 Freescale Semiconductor...
Страница 546: ...Error Correction Status Module ECSM MPC5606S Microcontroller Reference Manual Rev 7 544 Freescale Semiconductor...
Страница 669: ...Flash Memory MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 667...
Страница 670: ...Flash Memory MPC5606S Microcontroller Reference Manual Rev 7 668 Freescale Semiconductor...
Страница 716: ...FlexCAN MPC5606S Microcontroller Reference Manual Rev 7 714 Freescale Semiconductor...
Страница 882: ...LIN Controller LINFlex MPC5606S Microcontroller Reference Manual Rev 7 880 Freescale Semiconductor...
Страница 901: ...Memory Protection Unit MPU MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 899...
Страница 902: ...Memory Protection Unit MPU MPC5606S Microcontroller Reference Manual Rev 7 900 Freescale Semiconductor...
Страница 955: ...Mode Entry Module MC_ME MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 953...
Страница 956: ...Mode Entry Module MC_ME MPC5606S Microcontroller Reference Manual Rev 7 954 Freescale Semiconductor...
Страница 1072: ...Quad Serial Peripheral Interface QuadSPI MPC5606S Microcontroller Reference Manual Rev 7 1070 Freescale Semiconductor...
Страница 1096: ...Reset Generation Module MC_RGM MPC5606S Microcontroller Reference Manual Rev 7 1094 Freescale Semiconductor...
Страница 1106: ...Real Time Clock RTC API MPC5606S Microcontroller Reference Manual Rev 7 1104 Freescale Semiconductor...
Страница 1186: ...Stepper Stall Detect SSD MPC5606S Microcontroller Reference Manual Rev 7 1184 Freescale Semiconductor...
Страница 1213: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1211...
Страница 1214: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 1212 Freescale Semiconductor...
Страница 1238: ...Voltage Regulators and Power Supplies MPC5606S Microcontroller Reference Manual Rev 7 1236 Freescale Semiconductor...
Страница 1252: ...Wakeup Unit WKPU MPC5606S Microcontroller Reference Manual Rev 7 1250 Freescale Semiconductor...
Страница 1258: ...Registers Under Protection MPC5606S Microcontroller Reference Manual Rev 7 1256 Freescale Semiconductor...
Страница 1323: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1321...
Страница 1324: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 1322 Freescale Semiconductor...