AT-speed test access port operations

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United States of America Patent

PATENT NO 11808810
APP PUB NO 20230194604A1
SERIAL NO

18111679

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In some examples, an integrated circuit comprises: a TDI input, a TDO output, a TCK input and a TMS input; a TAP state machine (TSM) having an input coupled to the TCK input, an input coupled to the TMS input, an instruction register control output, a TSM data register control (DRC) output, and a TSM state output; an instruction register having an input coupled to the TDI input, an output coupled to the TDO output, and a control input coupled to the instruction register control output of the TAP state machine; router circuitry including a TSM DRC input coupled to the TSM DRC output, a control DRC input coupled to the TSM state output, and a router DRC output; and a data register having an input coupled to the TDI input, an output coupled to the TDO output, and a data register DRC input coupled to the router DRC output.

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Patent Owner(s)

  • TEXAS INSTRUMENTS INCORPORATED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Whetsel, Lee D Parker, US 868 5697

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