Scan register



(circuit design) A digital logic circuit which can act either as a flip-flop or as a serial shift register and which is used to form a scan path.
The most common design is a multiplexed flip-flop:
___ ____ normal in –| \ | | | |——|D Q|—- normal/scan output scan in —-|___/ mux | | | | | test mode —-+ +—-|> | flip-flop | |____| clk —————+
The addition of a multiplexor (mux) to each flip-flop’s input allows operation in either normal or test mode. The output of each flip-flop goes to the normal functional logic as well as to the scan input of the next multiplexor in the scan path.
The other common design is level-sensitive scan design (LSSD).
(1995-02-14)

Tagged:

Read Also:

  • Scansion

    noun, Prosody. 1. the metrical analysis of verse. The usual marks for scansion are ˘ for a short or unaccented syllable, ¯ or · for a long or accented syllable, ^ for a rest, | for a foot division, and ‖ for a caesura or pause. noun 1. the analysis of the metrical structure of […]

  • Scansorial

    adjective, Zoology. 1. capable of or adapted for climbing, as the feet of certain birds, lizards, etc. 2. habitually climbing, as a woodpecker. adjective 1. (zoology) specialized for, characterized by, or relating to climbing: a scansorial bird



  • Scant

    adjective, scanter, scantest. 1. barely sufficient in amount or quantity; not abundant; almost inadequate: to do scant justice. 2. limited; meager; not large: a scant amount. 3. barely amounting to as much as indicated: a scant two hours; a scant cupful. 4. having an inadequate or limited supply (usually followed by of): scant of breath. […]

  • Scanted

    adjective, scanter, scantest. 1. barely sufficient in amount or quantity; not abundant; almost inadequate: to do scant justice. 2. limited; meager; not large: a scant amount. 3. barely amounting to as much as indicated: a scant two hours; a scant cupful. 4. having an inadequate or limited supply (usually followed by of): scant of breath. […]



Disclaimer: Scan register definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.