21.15.3 ssn_analyzer_set_dontcare

Description

This Tcl command is specific to the Simultaneous Switching Noise (SSN) Analyzer. It sets specific I/Os to the dont_care state or resets dont_care I/Os to non-dont_care. A dont_care I/O is considered as an aggressor only and not as a victim.

ssn_analyzer_set_dontcare -io {ioName} \
                          -iobank {ioBankName} \
                          -value {integer value}

Supported Die/Package


Family	Die	Package
SmartFusion® 2	M2S150\|T\|TS	1152 FC
	M2S090\|T\|TS	676 FBGA
	M2S060\|T\|TS	676 FBGA
	M2S050\|T\|TS\|T_ES	896 FBGA
	M2S025\|T\|TS	484 FBGA
	M2S025\|T\|TS	400 VF
	M2S010\|T\|TS	484 FBGA
IGLOO® 2	M2GL150\|T\|TS	1152 FC
	M2GL090\|T\|TS	676 FBGA
	M2GL060\|T\|TS	676 FBGA
	M2GL050\|T\|TS	896 FBGA
	M2GL025\|T\|TS	484 FBGA
	M2GL025\|T\|TS	400 VF
	M2GL010\|T\|TS	484 FBGA

Not Supported Die/Package


Family	Die	Package
RTG4™	RT4G150\|L	1657 FCG
PolarFire®	MPF200TS	FCS325
	MPF300TS	FC484/FCS536/FCV484
	MPF300XT	FCG484
	MPF500TS	FC1152/FC784
	RTPF500T\|TL\|TS\|TLS	CG1509

Important: 1 ns pulse width is only supported for MPF300XT/FCG1152.

Arguments


Parameter	Type	Description
io	string	Specifies the I/O to be dont_care (the don't_care I/O is not be considered as a victim, whereas it is considered as an aggressor for the SSN analysis) or resets dont_care I/Os to non-dont_care.
iobank	string	Specifies the I/O bank name the specified I/O belongs to.
value	integer	Specifies an integer of 0 or 1 where 1 is used to set an I/O to be dont_care. 0 is used to reset an I/O to be non-dont_care.


Return Type	Description
None	None

Error Codes


Error Code	Description
None	Parameter 'ioBank' is not defined. Valid command formatting is 'set_dontcare -io "io" -iobank "iobank" -value "integer value"'.
None	Required parameter 'iobank' is missing.
None	Parameter 'io' has illegal value.
None	Required parameter 'io' is missing.
None	Parameter 'param_name' is not defined. Valid command formatting is 'set_dontcare -io "io" -iobank "iobank" -value "integer value"'.

Supported Families


Supported Families
PolarFire®
RTG4™
SmartFusion® 2
IGLOO® 2

Example

The following example sets the I/O named "DATA2" in I/O bank "Bank2" to dont_care:

ssn_analyzer_set_dontcare -io {DATA2} 
                          -ioBank {Bank2} 
                          -value {1}

The following example sets the dont_care I/O named "DATA1" in I/O bank "Bank3" to non-dont_care:

ssn_analyzer_set_dontcare -io {DATA1} \ 
                          -ioBank {Bank3} \
                          -value {0}

v2024.2