MPC5604B/C Microcontroller Reference Manual, Rev. 8
Freescale Semiconductor 203
9.4 Functional Description
9.4.1 Reset State Machine
The main role of MC_RGM is the generation of the reset sequence which ensures that the correct parts of
the device are reset based on the reset source event. This is summarized in Table 9-12.
Table 9-11. Functional Bidirectional Reset Enable Register (RGM_FBRE) Field Descriptions
Field Description
BE_EXR Bidirectional Reset Enable for External Reset
0 RESET is asserted on an external reset event if the reset is enabled
1 RESET is not asserted on an external reset event
BE_FLASH Bidirectional Reset Enable for code or data flash fatal error
0 RESET is asserted on a code or data flash fatal error event if the reset is enabled
1 RESET is not asserted on a code or data flash fatal error event
BE_LVD45 Bidirectional Reset Enable for 4.5 V low-voltage detected
0 RESET is asserted on a 4.5 V low-voltage detected event if the reset is enabled
1 RESET is not asserted on a 4.5 V low-voltage detected event
BE_CMU_F
HL
Bidirectional Reset Enable for CMU clock frequency higher/lower than reference
0 RESET is asserted on a CMU clock frequency higher/lower than reference event if the reset is
enabled
1 RESET is not asserted on a CMU clock frequency higher/lower than reference event
BE_CMU_O
LR
Bidirectional Reset Enable for FXOSC frequency lower than reference
0 RESET is asserted on a FXOSC frequency lower than reference event if the reset is enabled
1 RESET is not asserted on a FXOSC frequency lower than reference event
BE_FMPLL Bidirectional Reset Enable for FMPLL fail
0 RESET is asserted on a FMPLL fail event if the reset is enabled
1 RESET is not asserted on a FMPLL fail event
BE_CHKST
OP
Bidirectional Reset Enable for checkstop reset
0 RESET is asserted on a checkstop reset event if the reset is enabled
1 RESET is not asserted on a checkstop reset event
BE_SOFT Bidirectional Reset Enable for software reset
0 RESET is asserted on a software reset event if the reset is enabled
1 RESET is not asserted on a software reset event
BE_CORE Bidirectional Reset Enable for debug control core reset
0 RESET is asserted on a debug control core reset event if the reset is enabled
1 RESET is not asserted on a debug control core reset event
BE_JTAG Bidirectional Reset Enable for JTAG initiated reset
0 RESET is asserted on a JTAG initiated reset event if the reset is enabled
1 RESET is not asserted on a JTAG initiated reset event
Table 9-12. MC_RGM Reset Implications
Source What Gets Reset
External Reset
Assertion
Boot Mode
Capture
power-on reset all yes yes
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