Circuits, systems and methods relating to a dynamic dual domino ring oscillator
First Claim
1. An oscillating ring circuit, comprising:
- a plurality of non-inverting five state dual domino driving stages, each comprising an N-dynamic stage and a P-dynamic stage complementary thereto and having a signal input, an N-trigger input, a P-trigger input, a precharge state clock, a pre-discharge state clock, an N-cutoff clock, a P-cutoff clock and an output inverter; and
a plurality of non-inverting stages, each comprising a number of said non-inverting five state dual domino driving stages coupled to form a chain wherein a first non-inverting stage of the chain receives a logic signal input, a single N-trigger input and a P-trigger input for said chain, wherein an output of each non-inverting stage is a signal input of a next non-inverting stage in said chain, wherein said plurality of said non-inverting stages is configured as a non-inverting dual domino ring wherein an output of each non-inverting stage of said plurality of non-inverting stages comprises an input signal to a next non-inverting stage of said plurality of non-inverting stages and is further fed back to clock an earlier non-inverting stage to allow oscillation in said non-inverting dual domino ring.
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Abstract
A dynamic dual domino oscillating ring circuit is described, which has multiple non-inverting dual domino circuits, each having a signal input, N and P-domino triggers, precharge and pre-discharge, N and P-domino cutoffs and an output inverter. A number of the dual domino circuits are coupled in series, the output of one feeding the input of the next, to form a dual domino chain, which form stages of the dual domino ring. A number of the stages are coupled in series, the output of one feeding the input of the next, to form the ring. The first dual domino circuit of the chain receives a signal input and the N and P triggers for the chain. Within the ring, the output of each stage feeds the input signal to the next stage and is fed back to clock an earlier stage to allow the ring to oscillate.
129 Citations
28 Claims
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1. An oscillating ring circuit, comprising:
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a plurality of non-inverting five state dual domino driving stages, each comprising an N-dynamic stage and a P-dynamic stage complementary thereto and having a signal input, an N-trigger input, a P-trigger input, a precharge state clock, a pre-discharge state clock, an N-cutoff clock, a P-cutoff clock and an output inverter; and a plurality of non-inverting stages, each comprising a number of said non-inverting five state dual domino driving stages coupled to form a chain wherein a first non-inverting stage of the chain receives a logic signal input, a single N-trigger input and a P-trigger input for said chain, wherein an output of each non-inverting stage is a signal input of a next non-inverting stage in said chain, wherein said plurality of said non-inverting stages is configured as a non-inverting dual domino ring wherein an output of each non-inverting stage of said plurality of non-inverting stages comprises an input signal to a next non-inverting stage of said plurality of non-inverting stages and is further fed back to clock an earlier non-inverting stage to allow oscillation in said non-inverting dual domino ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for determining relative strengths of N-type and P-type devices of a circuit, said system comprising:
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a dual domino oscillator comprising N-domino circuit stages and chain stages and P-domino circuit stages and chain stages, wherein said dual domino oscillator generates an output with a frequency dependent on characteristics generated by said N-domino circuit stages and said P-domino circuit stages; a detector coupled to said output for discriminating between generated characteristics of said N-domino circuit stages and said P-domino circuit stages and generating a discriminating signal corresponding to said discriminating; a comparator coupled to said detector for comparing said generated characteristics based on said discriminating signal and generating a corresponding comparison signal; and a determinator coupled to said comparator for determining said relative strengths of N-type and P-type devices of said dual domino oscillator based on said comparison signal. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method for determining relative strengths of N-type and P-type devices of a dual domino ring oscillator, said method comprising:
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resolving a frequency of operation of said dual domino ring oscillator into N-based frequency components and P-based frequency components respectively contributed by said N-type and said P-type devices wherein said N-type and said P-type devices respectively predominate in N-domino circuit stages and P-domino circuit stages of said dual domino ring oscillator; comparing said N-based frequency components and said P-based frequency components; and based on said comparing, determining said relative strengths of said N-type and said P-type devices. - View Dependent Claims (24, 25)
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26. A dual dynamic ring oscillator comprising:
a five state dual domino driver stage comprising; a plurality of N-domino devices; a plurality of P-domino devices coupled to said plurality of N-domino devices and functionally complementary thereto; and an output inverter driven sequentially by said plurality of N-domino devices and said plurality of P-domino devices, wherein states of said five state dual domino driver stage comprise; a precharge state corresponding to said plurality of N-domino devices; first evaluate state corresponding to said plurality of N-domino devices; a pre-discharge state corresponding to said plurality of P-domino devices; second evaluate state corresponding to said plurality of P-domino devices; and a high impedance state in which said five state dual domino driver stage is relatively inactive. - View Dependent Claims (27, 28)
Specification