US 2022/0103166 A1 · CLOCK DUTY CYCLE CORRECTION

Abstract

Systems, methods, and devices are provided for calibrating and correcting a clock duty cycle. An integrated circuit may include a clock tree that provides a clock signal and a circuit that is sensitive to clock duty cycle that receives the clock signal at a lower level of the clock tree. A first duty cycle correction circuit may adjust a clock duty cycle of the clock signal to a first target duty cycle at a higher level of the clock tree. A second duty cycle correction circuit may adjust a clock duty cycle of the clock signal to a second target duty cycle at the lower level of the clock tree.

Claims19

Dependent claims

An integrated circuit comprising:

a clock tree configured to provide a clock signal;
a circuit that is sensitive to clock duty cycle that receives the clock signal at a lower level of the clock tree;
a first duty cycle correction circuit configured to adjust a clock duty cycle of the clock signal to a first target duty cycle at a higher level of the clock tree;
and
a second duty cycle correction circuit configured to adjust the clock duty cycle of the clock signal to a second target duty cycle at the lower level of the clock tree.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/476,307Filed 15 Sep 2021

Priority

25 Sep 2020

Published

31 Mar 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

G06F 1/10
Generating or distributing clock signals or signals derived directly therefrom: distribution of clock signals , e.g. skew
H03K 5/1565
Arrangements in which a continuous pulse train is transformed into a train having a desired pattern: the output pulses having a constant duty cycle
G06F 1/08
Generating or distributing clock signals or signals derived directly therefrom: clock generators with changeable or programmable clock frequency
G06F 1/324
Power saving characterised by the action undertaken: by lowering clock frequency

Clock duty cycle correction

Life of this patent

Clock duty cycle correction

Life of this patent

Abstract

Claims19