PXS20RM Datasheet, PDF (521/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

Fault Collection and Control Unit (FCCU)
22.6.13 FCCU NCF Time-out Enable Register (FCCU_NCF_TOE0..3)
The FCCU_NCFTOEx register enables a transition from the NORMAL state into the ALARM state if the
respective non-critical fault is enabled (NCFEx and NCFTOEx are set). In case the respective time-out is
disabled (NCFTOEx is cleared) and the non-critical fault is enabled (NCFEx is set) the FCCU moves into
the FAULT state if the related non-critical fault is asserted. The timer (preset with the time-out value
defined by FCCU_TO register) is started when the FCCU moves into the ALARM state. If the fault is not
recovered within the time-out the FCCU moves from the ALARM state to the FAULT state.
The FCCU_NCFTOEx register is accessible in write mode, only in the CONFIG state.
Offset: 0x0A4–0x0B0 (4 registers)
Access: User read/write¹
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
W
Reset 0
0
0
0
0
0
0 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0 0/1² 0/1²
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
W
Reset 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1² 0/1²
1 _{Writable only in the CONFIG state}
2 _{1 for FCCU_NCF_TOE0; 0 otherwise}
Figure 22-16. FCCU NCF Time-out Enable Register (FCCU_NCF_TOE0..3)
Table 22-15. FCCU_NCF_TOE0..3 field descriptions
Field
NCFTOEx
Description
Non-critical fault time-out enable
0: FCCU moves into the FAULT state if the respective fault is disabled (NCFEx is cleared)
1: FCCU moves into the ALARM state if the respective fault is enabled (NCFEx is set)
22.6.14 FCCU NCF Time-out Register (FCCU_NCF_TO)
The FCCU_NCF_TO register defines the preset value of the timer for the recovery of the non-critical
faults (enabled). Once FCCU enters in ALARM state, following the assertion of a non-critical fault
enabled (NCFEx and NCFTOEx are set), the timer starts the count down.
If the fault is not recovered within the time-out the FCCU moves from the ALARM state to the FAULT
state.
The FCCU_NCF_TO register is accessible in write mode, only in the CONFIG state.
Freescale Semiconductor
PXS20 Microcontroller Reference Manual, Rev. 1
22-21