PXS20RM Datasheet, PDF (524/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

Fault Collection and Control Unit (FCCU)
Field
STATUS
Table 22-18. FCCU_STAT field descriptions
FCCU Status
000: NORMAL state.
001: CONFIG state
010: ALARM state
011: FAULT state
Other: UNKNOWN state
Description
This bit can be read by the software.
22.6.17 FCCU CF Fake Register (FCCU_CFF)
The FCCU_CFF register contains a unique code to set a “critical fault” in mutually exclusive mode by the
external FAULT interface. It allows the SW emulation of the critical faults, by the injection of the fault
directly in the FAULT root, in order to verify the entire path and reaction. The fault injection mechanism
is optional. The reaction following a fake critical fault cannot be masked. The FCCU_CFF is a write-only
register with a set of codes corresponding to each critical fault injection.
Offset: 0x0D8
Access: User write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R0 0 0 0 0 0 0 0 0
W
FCFC
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 22-20. FCCU CF Fake Register (FCCU_CFF)
Table 22-19. FCCU_CFF field descriptions
Field
FCFC
Description
Fake critical fault code
00h: Fake critical fault injection at critical fault source 0
01h: Fake critical fault injection at critical fault source 1
02h: Fake critical fault injection at critical fault source 2
..
1Fh: Fake critical fault injection at critical fault source 31
others: No fault injection
These bits are always read as ‘0’ by software.
22.6.18 FCCU NCF Fake Register (FCCU_NCFF)
The FCCU_NCFF register contains a unique code to set a “non-critical fault” in mutually exclusive mode
by the external FAULT interface. It allows the SW emulation of the non-critical faults, by the injection of
22-24
PXS20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor