11.4.11.2.6 Self-Test

The IOIMCON SFR contains the FLTINJ bit and OKINJ bit, which allow user software to simulate an IOIM failure/OK. This feature allows the user to fully test Fault handling software (see IOIMxCON). The mode for artificial test must be set accordingly.

Table 11-47. IOIM Test Conditions
Operating Mode	ATEST Bit	OKINJ Bit	FLTINJ Bit	Register Bits Valid				Comments
Operating Mode	ATEST Bit	OKINJ Bit	FLTINJ Bit	OK	ERR	ERRCNT	OVF	Comments
Functional mode	`00/01`	`x`	`x`	Yes	Yes	Yes	Yes	Reference and feedback signals are taken from external signals.
	`11`	`1`	`0`	`1`	`0`	`0`	`0`	It is a module health test. Feedback and reference signals are injected from the register bit (OKINJ) by user.
	`10`	`0`	`1`	`0`	`1`	Yes	Yes	It is a module health test. Feedback and reference signals are injected from the register bit (FLTINJ) by user.
Note: It is not recommended to set the OKINJ and FLTINJ bits at the same time. OK bit is not set when FLTINJ = `1`. It is recommended to disable and then enable the module using the ON bit after mode changes.