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US 2017/0012614 A1Published application
Current-mode clock distribution
AssigneeThe Regents of the University of California
InventorsMatthew Guthaus, Riadul Islam
Life of this patent
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Abstract
Current-mode signaling for a one-to-many clock signal distribution providing significantly less dynamic power use and improved noise immunity compared to traditional VM signaling schemes.
Claims23
A current mode flip-flop, comprising:
- a first current mirror for receiving a voltage reference and for producing a first reference current in response to said voltage reference;
- a second current mirror for producing a second reference current;
- a current input for modifying said second reference current;
- a current comparator for producing a difference current between said first reference current and said modified second reference current;
- an inverting amplifier for converting said difference current into a logic level voltage;
- a pulse shaper receiving said logic level voltage and for applying a delayed version to said current comparator to thereby form a clock signal having a pulse duration;
- a register stage for receiving a data signal and said clock signal;
- and
- a storage cell for storing data when said clock signal occurs.
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A very large scale integrated circuit, comprising:
- a voltage mode clock to current mode clock converter receiving a voltage mode clock and outputting a current mode clock;
- an H-Tree clock distribution network having at least a first current mode flip-flop and a second current mode flip-flop;
- and
- an interconnect connecting said current mode clock to said H-Tree clock distribution network;
- wherein said H-Tree clock distribution network evenly distributes said current mode clock to said first current mode flip-flop and to said second current mode flip-flop.
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A current-mode logic switched clock distribution network (CDN) comprising and implementing a current-mode clocking device wherein the current-mode clocking device comprises a current-mode logic operated flip-flop incorporated into CDN.
Dependencies are inferred from the claim text.