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US 12,601,784 B2Granted
Circuitry including scan and non-scan registers
AssigneeArm Limited
InventorsPrashant Mohan Kulkarni, Leo Soundhar Prakash Panneer, Teresa Louise McLaurin
Life of this patent
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Abstract
Briefly, example apparatuses, articles of manufacture, and/or techniques are disclosed that may be implemented, in whole or in part, to implement, facilitate and/or support integrated circuit design-for-testing, such as, a scan register coupled to one or more non-scan registers via a multiplexer having first and second signal inputs.
Claims15
An apparatus, comprising:
- a scan register comprising a scan insertion signal input, a first non-scan register signal input, a control signal input, and a scan register signal output, wherein, responsive to a control signal via the control signal input, the scan register is to transmit a scan register signal from the scan register signal output as input via either the scan insertion signal input or the first non-scan register signal input;
- a non-scan register comprising a second non-scan register signal input;
- and
- a multiplexer comprising a first multiplexer input, a second multiplexer input coupled to the scan register signal output of the scan register, a multiplexer output coupled to the first non-scan register signal input of the scan register and the second non-scan register signal input of the non-scan register, and a selector input;
- and
- wherein, responsive to a control signal transmitted via the selector input, the multiplexer is to either transmit a scan insertion signal from the scan register signal output as input via the first multiplexer input or transmit a non-scan signal as input via the second multiplexer input.
3 more elements
A method, comprising:
- transmitting a scan insertion signal to a scan register via a scan insertion signal input;
- transmitting a first control signal to the scan register via a control signal input;
- responsive to the first control signal, transmitting a scan register signal from a scan register signal output of the scan register as input via either the scan insertion signal input or a first non-scan register signal input of the scan register;
- transmitting a second control signal to a multiplexer via a selector input, the multiplexer comprising the selector input, a first multiplexer input, a second multiplexer input coupled to the scan register signal output of the scan register, and a multiplexer output coupled to the first non-scan register signal input of the scan register and a non-scan register signal input of a non-scan register;
- and
- responsive to the second control signal, transmitting either the scan insertion signal from the scan register signal output of the multiplexer as input via the first multiplexer input or a non-scan signal as input via the second multiplexer input.
3 more elements
A non-transitory computer-readable medium storing computer-readable code for fabrication of an apparatus comprising:
- a scan register comprising a scan insertion signal input, a first non-scan register signal input, a control signal input, and a scan register signal output, wherein, responsive to a control signal via the control signal input, the scan register is to transmit a scan register signal from the scan register signal output as input via either the scan insertion signal input or the first non-scan register signal input;
- a non-scan register comprising a non-scan register signal input;
- and
- a multiplexer comprising a first multiplexer input, a second multiplexer input coupled to the scan register signal output of the scan register, a multiplexer output coupled to the first non-scan register signal input of the scan register and a second non-scan register signal input of the non-scan register, and a selector input;
- wherein, responsive to a control signal transmitted via the selector input, the multiplexer is to either transmit a scan insertion signal from the scan register signal output as input via the first multiplexer input or transmit a non-scan signal as input via the second multiplexer input.
2 more elements
Dependencies are inferred from the claim text.