Method of reducing power dissipation in a clock distribution network for integrated circuit
First Claim
1. A clock distribution network comprising:
- a transmission line having a first segment and a second segment;
a multi-port electrical network coupled between the first segment and second segment of the transmission line, the multi-port electrical network comprising a passive electrical network configured to produce a first resonance and a second resonance that cooperate to create a bandpass response across a plurality of clock distribution frequencies associated with a bandwidth of a combination of the transmission line and the multi-port electrical network; and
a single input and multiple outputs.
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0 Petitions
Accused Products
Abstract
A method and circuit are provided to reduce power consumption of high-speed clocks that are distributed across an integrated circuit (IC). Example implementations seek to reduce the amount of power dissipated in typical clock distribution networks by turning the combination of a multi-port electrical network and transmission line into a multi-resonant structure. In an implementation, the multi-port electrical network is coupled between first and second segments of the transmission line. The multi-port electrical network includes series and shunt reactive circuit elements, such as series inductive reactance and a shunt inductive susceptance, configured to produce first and second resonances that cooperate to create a bandpass response across clock distribution frequencies. This bandpass response is created by the multi-resonant structure, which is a combination of the transmission line and the multi-port electrical network. Various implementations are provided, including single-ended, differential, multi-section, multi-output, and point-to-multi-point implementations, each with an optional low-speed mode switch.
3 Citations
20 Claims
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1. A clock distribution network comprising:
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a transmission line having a first segment and a second segment; a multi-port electrical network coupled between the first segment and second segment of the transmission line, the multi-port electrical network comprising a passive electrical network configured to produce a first resonance and a second resonance that cooperate to create a bandpass response across a plurality of clock distribution frequencies associated with a bandwidth of a combination of the transmission line and the multi-port electrical network; and a single input and multiple outputs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A clock distribution network comprising:
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a transmission line having a first segment and a second segment; a multi-port electrical network coupled between the first segment and second segment of the transmission line, the multi-port electrical network comprising a passive electrical network configured to produce a first resonance and a second resonance that cooperate to create a bandpass response across a plurality of clock distribution frequencies associated with a bandwidth of a combination of the transmission line and the multi-port electrical network; and a point-to-multipoint implementation sending a clock from a single input point to multiple output points. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A clock distribution network comprising:
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a transmission line having a first segment and a second segment; and a multi-port electrical network coupled between the first segment and second segment of the transmission line, the multi-port electrical network comprising a passive electrical network configured to produce a first resonance and a second resonance that cooperate to create a bandpass response across a plurality of clock distribution frequencies associated with a bandwidth of a combination of the transmission line and the multi-port electrical network, wherein the multi-port electrical network comprises series and shunt reactive circuit, and wherein the series and shunt reactive circuit elements comprise a plurality of series inductive reactances and an equal number of shunt inductive susceptances configured to create a plurality of resonances. - View Dependent Claims (19, 20)
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Specification