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US 11,385,677 B2Granted
Clock data recovery circuit
AssigneeTexas Instruments Incorporated
InventorsMichael Ryan Hanschke, Pankaj Pandey, Joseph Pham, David Wayne Evans
Life of this patent
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Abstract
A clock data recovery circuit includes a deglitch filter circuit and a timer circuit. The deglitch filter circuit is configured to remove pulses of less than a predetermined duration from a data signal to produce a deglitched data signal. The timer circuit is coupled to the deglitch filter, and is configured to compare a duration of a pulse of the deglitched data signal to a threshold duration, and identify the pulse as representing a logic one based on the duration of the pulse exceeding the threshold duration.
Claims8
A clock data recovery circuit, comprising:
- a deglitch filter circuit including:
- a data input;
- and
- a deglitched data output;
- a timer circuit including:
- an enable input coupled the deglitched data output;
- a bit output;
- and
- a reset input;
- a delayed pulse circuit including:
- an input coupled to the deglitched data output;
- and
- a pulse output coupled to the reset input;
- and
- a latch including:
- a data input coupled to the bit output;
- a clock input coupled to the deglitched data output;
- and
- a recovered data output.
16 more elements
Dependencies are inferred from the claim text.