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RM0046 Fault Collection Unit (FCU)

Doc ID 16912 Rev 5 765/936

Fault Enable Register (FCU_FER)

When a fault occurs, the FCU goes into either Alarm or Fault state (state is selected in the

FCU_TER), if the respective fault enable bit is set in the Fault Enable Register (FCU_FER).

This register can be configured only during the Init phase before the configuration is locked.

Key Register (FCU_KR)

In order to clear a software fault flag in the Alarm state, the FCU_KR must be set to the

following value: 0x618B_7A50. Then the software fault flag can be cleared.

User software can clear the software fault flag only after the following instruction is

executed. If something else is done, instead of clearing the flag, the key must be re-entered.

Any wrong key error is ignored.

Figure 441. Fault Enable Register (FCU_FER)

Address:

Base + 0x0010 Access: User read/write, Supervisor read/write

0123456789101112131415

ESF

00000000000

Reset1111100000000000

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

EHF

Reset1111111111111111

Table 406. FCU_FER field descriptions

Field Description

0:4

ESF0–

ESF4

Enable Software Recoverable Fault

0: FCU takes no action on Software recoverable Fault [0:4]

1: FCU goes into Alarm/Fault state on Software recoverable Fault [0:4]

Note. ESF1 not implemented or usable on this device

16:31

EHF15–

EHF0

Enable Hardware Recoverable Fault

0: FCU takes no action on Hardware recoverable Fault [15:0]

1: FCU goes into Alarm/Fault state on Hardware recoverable Fault [15:0]

ST SPC560P34 User Manual

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