Method of reducing power dissipation in a clock distribution network for integrated circuit
First Claim
1. A clock distribution network comprising:
- a transmission line configured to distribute a high-speed clock signal; and
a multi-port electrical network coupled between first and second segments of the transmission line, the multi-port electrical network comprising series and shunt reactive circuit elements configured to produce first and second resonances 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.
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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.
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Citations
20 Claims
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1. A clock distribution network comprising:
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a transmission line configured to distribute a high-speed clock signal; and a multi-port electrical network coupled between first and second segments of the transmission line, the multi-port electrical network comprising series and shunt reactive circuit elements configured to produce first and second resonances 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of reducing power dissipation in a clock distribution network comprising:
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distributing, on a transmission line, a high speed clock signal; and producing, at a multi-port electrical network coupled between first and second segments of the transmission line, first and second resonances, the first and second resonances cooperating 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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification