AN4124 datasheet(26/32 Pages) STMICROELECTRONICS

Part #	AN4124

Description	Using SPC56EL60x fault collection and control unit

PDF	32 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Redundancy and functions

AN4124

26/32

Doc ID 023294 Rev 2

exit_value= 1;

return(exit_value);

}

A.3

General purpose functions

Two examples have been developed to show the features of FCCU. The examples have

been implemented on the XPC56xxMB. The XPC56xxMB was plugged to XPC56EL mini-

module with SPC56ELX 144 pins.

Figure 7.

XPC56xxMB mother board

A.3.1

Example N1: fake NCF by external IRQ

In this example we show the NCF fault injection (by external IRQ funtionality), in order to

show an FCCU reaction. The example includes ALARM and NMI ISR assertion. The fault is

checked and cleared with a subroutine by looking in the NCFSx registers.

Two external buttons have been used to inject and clear the NCF (KEY 1 and KEY 2) and

LED1 on the motherboard has been used to view the fault status. To connect the two

buttons to input pins (interrupt), we need to connect J8 pin 1B to JP9 pin 1, and J8 pin 2B to

JP9 pin 2.

GAPGCFT00699

AN4124 Datasheet(PDF) 26 Page - STMicroelectronics