Reset Generation Module (MC_RGM)MPC5606S Microcontroller Reference Manual, Rev. 7Freescale Semiconductor 1087NOTEIt is not possible for a functional event to perform a short reset sequence andalso assert the external reset pin. If any functional event is defined toperform a short reset sequence in the RGM_FESS register and also assertthe external reset pin, then it will perform a long reset starting with Phase3and not assert the external reset pin.31.4 Functional description31.4.1 Reset State MachineThe main role of MC_RGM is the generation of the reset sequence which ensures that the correct parts ofthe device are reset based on the reset source event. This is summarized in Table 31-12.Table 31-11. Functional Bidirectional Reset Enable Register (RGM_FBRE) field descriptionsField DescriptionBE_EXR Bidirectional Reset Enable for External Reset0 RESET is asserted on an external reset event if the reset is enabled1 RESET is not asserted on an external reset eventBE_FLASH Bidirectional Reset Enable for code or data flash fatal error0 RESET is asserted on a code or data flash fatal error event if the reset is enabled1 RESET is not asserted on a code or data flash fatal error eventBE_LVD45 Bidirectional Reset Enable for 4.5V low-voltage detected0 RESET is asserted on a 4.5V low-voltage detected event if the reset is enabled1 RESET is not asserted on a 4.5V low-voltage detected eventBE_CMU0_FHLBidirectional Reset Enable for CMU0 clock frequency higher/lower than reference0 RESET is asserted on a CMU0 clock frequency higher/lower than reference event if the reset is enabled1 RESET is not asserted on a CMU0 clock frequency higher/lower than reference eventBE_CMU0_OLRBidirectional Reset Enable for FXOSC frequency lower than reference0 RESET is asserted on a FXOSC frequency lower than reference event if the reset is enabled1 RESET is not asserted on a FXOSC frequency lower than reference eventBE_FMPLL0 Bidirectional Reset Enable for FMPLL0 fail0 RESET is asserted on a FMPLL0 fail event if the reset is enabled1 RESET is not asserted on a FMPLL0 fail eventBE_CORE Bidirectional Reset Enable for core reset0 RESET is asserted on a core reset event if the reset is enabled1 RESET is not asserted on a core reset eventBE_JTAG Bidirectional Reset Enable for JTAG initiated reset0 RESET is asserted on a JTAG initiated reset event if the reset is enabled1 RESET is not asserted on a JTAG initiated reset eventTable 31-12. MC_RGM Reset ImplicationsSource What gets reset External resetassertionBoot modecapturepower-on reset all yes yes
