Consider the following SVF file snippet.

SIR 10 TDI (002);

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


without going through IRUPDATE? Or should it go


as if STATE IRSELECT was issued?


1 Answer 1


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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