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Consider the following SVF file snippet.

ENDIR IRPAUSE;
SIR 10 TDI (002);

Once the data have been shifted into the instruction register, should the state machine go

IRSHIFT->IREXIT1->IRPAUSE

without going through IRUPDATE? Or should it go

IRSHIFT->IREXIT1->IRPAUSE->IREXIT2->IRUPDATE
->DRSELECT->IRSELECT->IRCAPTURE->IREXIT1->IRPAUSE

as if STATE IRSELECT was issued?

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1 Answer 1

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I've tested both possibilities and configuring the device I have at hand works with the former state sequence, whereas it fails for the latter. Lacking any "official" interpretation of the specification, I'm going to go with this empirical evidence.

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