PXD20RM Datasheet, PDF (1290/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Alternatively, it is possible for software to configure some reset source events to be converted from a reset
to either a SAFE mode request issued to the MC_ME or to an interrupt issued to the CPU (see
Section 37.3.1.4, Destructive Event Reset Disable Register (RGM_DERD), and Section 37.3.1.6,
Destructive Event Alternate Request Register (RGM_DEAR), for ‘destructive’ resets and
Section 37.3.1.3, Functional Event Reset Disable Register (RGM_FERD), and Section 37.3.1.5,
Functional Event Alternate Request Register (RGM_FEAR), for ‘functional’ resets).
37.2 External Signal Description
The MC_RGM interfaces to the bidirectional reset pin RESET and the boot mode pins PAD[22:21].
37.3 Memory Map and Register Definition
Table 37-1. MC_RGM Register Description
Address
Name
0xC3FE_4000
0xC3FE_4002
0xC3FE_4004
0xC3FE_4006
0xC3FE_4010
0xC3FE_4012
0xC3FE_4018
0xC3FE_401A
0xC3FE_401C
RGM_FES
RGM_DES
RGM_FERD
RGM_DERD
RGM_FEAR
RGM_DEAR
RGM_FESS
RGM_STDBY
RGM_FBRE
Description
Functional Event Status
Destructive Event Status
Functional Event Reset Disable
Destructive Event Reset Disable
Functional Event Alternate Request
Destructive Event Alternate Request
Functional Event Short Sequence
STANDBY Reset Sequence
Functional Bidirectional Reset Enable
Location
on page 37-17
on page 37-18
on page 37-19
on page 37-21
on page 37-22
on page 37-23
on page 37-24
on page 37-25
on page 37-26
NOTE
Any access to unused registers as well as write accesses to read-only
registers will:
• Not change register content
• Cause a transfer error
37-14
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor