Timing signal generating circuit having simple configuration with low supply voltage and generating timing signals with high accuracy
AssigneeFujitsu Limited
InventorsTakaya Chiba, Hirotaka Tamura
Life of this patent
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Abstract
A timing signal generating circuit receives multiphase input signals and generates a signal having a phase intermediate therebetween, and weighting is applied to the multi-phase input signals by using a variable impedance circuit. The timing signal generating circuit (receiver circuit) can operate with a low supply voltage, is simple in configuration, and can generate timing signals with high accuracy.
Claims56
A timing signal generating circuit which receives multi-phase input signals and generates a signal having a phase intermediate therebetween, wherein weighting is applied to said multi-phase input signals by using a variable impedance circuit.
A receiver circuit comprising:
- a data detection/discrimination circuit for detecting and discriminating data carried in an input signal;
- a changing point detection/discrimination circuit for detecting and discriminating a changing point appearing in said input signal;
- a phase comparator circuit for receiving outputs from said data detection/discrimination circuit and said changing point detection/discrimination circuit, and for comparing the phases of said outputs;
- and
- a clock signal generating circuit for receiving an output from said phase comparator circuit, and for supplying a first internal clock to said data detection/discrimination circuit and a second internal clock to said changing point detection/discrimination circuit, wherein
- said clock signal generating circuit is a timing signal generating circuit which receives multiphase input signals and generates a signal having a phase intermediate therebetween, wherein weighting is applied to said multi-phase input signals by using a variable impedance circuit.
Dependencies are inferred from the claim text.