Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
182
10.21.11 Configurable Fault Status Register
The CFSR indicates the cause of a memory management fault, bus fault, or usage fault. See the register summary
in Table 10-30 on page 165 for its attributes. The bit assignments are:
The following subsections describe the subregisters that make up the CFSR:
 “Memory Management Fault Status Register” on page 183
 “Bus Fault Status Register” on page 184
 “Usage Fault Status Register” on page 186.
The CFSR is byte accessible. You can access the CFSR or its subregisters as follows:
 access the complete CFSR with a word access to 0xE000ED28
 access the MMFSR with a byte access to 0xE000ED28
 access the MMFSR and BFSR with a halfword access to 0xE000ED28
 access the BFSR with a byte access to 0xE000ED29
 access the UFSR with a halfword access to 0xE000ED2A.
31 302928 27 26 25 24
Usage Fault Status Register: UFSR
23 22 21 20 19 18 17 16
Usage Fault Status Register: UFSR
15 14 13 12 11 10 9 8
Bus Fault Status Register: BFSR
76543 210
Memory Management Fault Status Register: MMFSR