Safety
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor
119
In the example in
, addresses 0x0C and 0x0D are unprotected. Therefore their corresponding
lock bits SLBR3.SLB[1:0] are always 0b0 (shown in bold). When doing a 32-bit write access to address
0x200C, only lock bits SLBR3.SLB[3:2] are set while bits SLBR3.SLB[1:0] stay 0b0.
NOTE
Lock bits can only be set via writes to the mirror module space. Reads from
the mirror module space will not change the lock bits.
4.1.4.2.3
Write protection for locking bits
Changing the locking bits through any of the procedures mentioned in
Section 4.1.4.2.1, Change lock
Section 4.1.4.2.2, Enable locking via mirror module space (area #3)
only possible as long as the bit GCR.HLB is cleared. Once this bit is set the locking bits can no longer be
modified until after a system reset.
4.1.4.3
Access errors
The protection module generates transfer errors under several circumstances. For the area definition refer
to
1. If accessing area #1 or area #3, the protection module will pass on any access error from the
underlying Module under Protection.
2. If user mode is not allowed, user writes to all areas will assert a transfer error and the writes will
be blocked.
3. If accessing the reserved area #2, a transfer error will be asserted.
4. If accessing unimplemented 32-bit registers in area #4 and area #5 a transfer error will be asserted.
5. If writing to a register in area #1 and area #3 with Soft Lock Bit set for any of the affected bytes, a
transfer error is asserted and the write will be blocked. Also the complete write operation to
non-protected bytes in this word is ignored.
6. If writing to a Soft Lock Register in area #4 with the Hard Lock Bit being set, a transfer error is
asserted.
7. Any write operation in any access mode to area #3 while Hard Lock Bit GCR.HLB is set.
4.1.5
Reset
The reset state of each individual bit is shown within the Register description section (See
). In summary, after reset, locking for all MR
n
registers is disabled. The registers can
be accessed in Supervisor mode only.
4.2
Software Watchdog Timer (SWT)
4.2.1
Overview
The Software Watchdog Timer (SWT) is a peripheral module that can prevent system lockup in situations
such as software getting trapped in a loop or if a bus transaction fails to terminate. When enabled, the SWT
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...
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