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US 10,382,019 B2Granted
Time borrowing flip-flop with clock gating scan multiplexer
AssigneeIntel Corporation
InventorsAmit Agarwal, Steven K. Hsu, Simeon Realov, Ram K. Krishnamurthy
Life of this patent
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Abstract
An apparatus is provided which comprises: a multiplexer which is gated by a clock; and a flip-flop coupled to the multiplexer, wherein the flip-flop has a chain of at least four inverters one of which has an input to receive the clock.
Claims18
An apparatus comprising:
- a switch gated by a clock;
- and
- a flip-flop coupled to the switch, wherein the flip-flop includes a chain of at least four inverting logics, and wherein one of the four inverting logics has an input to receive the clock,
- wherein the clock is to gate a scan input to the switch.
1 more element
An apparatus comprising:
- a switch gated by a clock;
- a chain of four inverting logic gates, wherein one of the four inverting logic gates has an input to receive the clock;
- and
- a vectored flip-flop circuitry comprising:
- a first flip-flop to receive a first data input and a first scan input, and to generate a first output, wherein the first flip-flop is coupled to the switch and at least one of the four inverting logic gates, and wherein the clock is to gate the first scan input;
- and
- a second flip-flop to receive a second data input and a second scan input, and to generate a second output, wherein the second flip-flop is coupled to the switch and at least one of the four inverting logic gates.
4 more elements
A system comprising:
- a processor;
- a memory coupled to the processor, wherein the processor includes:
- a switch gated by a clock;
- and
- a flip-flop coupled to the switch, wherein the flip-flop includes a chain of at least four inverting logics, wherein one of the four inverting logics has an input to receive the clock, and wherein the clock is to gate a scan input to the switch;
- and
- a wireless interface to allow the processor to communicate with another device.
4 more elements
Dependencies are inferred from the claim text.