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Glossary:Wrapper-Boundary Register

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(WBR) An IEEE Std 1500 serial shift-register similar to the BSR of a device, but with more defined capabilities, that is meant to wrap around a core to provide the ability to test the core in isolation (in-facing mode), or the test logic attached to the core using the wrapper instead of the core (out-facing mode).


Source: IEEE 1500

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