IEEE P1687 Internal JTAG (IJTAG) Tutorial

(SIB). The composition of a SIB is shown in the illustration above. A SIB is similar to an IEEE 1149.1 boundary-scan shift/update cell, but the SIB is used to dynamically configure an on-chip P1687 IJTAG scan path to meet the requirements of a particular set of test vectors. ‘Selecting’ a

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