Phase discriminator and clock and data recovery circuit

A phase detector and circuit technology, applied in the direction of electrical components, automatic power control, etc., can solve the problem of high power consumption of CDR circuits, and achieve the effect of reducing power consumption and power consumption

Pending Publication Date: 2017-10-17
CHIPONE TECH BEIJINGCO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The embodiment of the present invention provides a phase detector and a clock and data recovery circuit to at least solve the technical problem of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phase discriminator and clock and data recovery circuit
  • Phase discriminator and clock and data recovery circuit
  • Phase discriminator and clock and data recovery circuit

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1

[0036]According to an embodiment of the present invention, an embodiment of a phase detector is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be executed in a computer system such as a set of computer-executable instructions, and, although in A logical order is shown in the flowcharts, but in some cases steps shown or described may be performed in an order different from that herein.

[0037] image 3 is a schematic structural diagram of a phase detector according to an embodiment of the present invention, such as image 3 As shown, the phase detector includes:

[0038] The data sampling circuit 31 is used to sample the baud rate of the data stream to obtain a data sampling sequence; the integration and comparison circuit 32 is used to obtain the quantized digital signal after integrating and comparing the data stream; the logic circuit 33 is used to obtain the quantized digital signal according to the ...

Example Embodiment

[0055] Embodiment 2

[0056] According to another aspect of the embodiments of the present invention, a clock and data recovery circuit is also provided, Image 6 is a schematic structural diagram of a clock and data recovery circuit according to an embodiment of the present invention, such as Image 6 As shown, the clock and data recovery circuit includes:

[0057] The input end of the phase detector 61 is used to receive the data stream; the output end of the phase detector 61 is connected with the input end of the charge pump 62, the output end of the charge pump 62 is connected with the input end of the loop filter 63, and the loop filter The output end of the device 63 is connected to the input end of the voltage-controlled oscillator 64, wherein the phase detector 61 obtains the data sampling sequence by sampling the baud rate of the data stream; after integrating and comparing the data stream, the quantized digital number is obtained. According to the combined data sa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a phase discriminator and a clock and data recovery circuit. The phase discriminator comprises a data sampling circuit for performing baud rate sampling on a data flow to obtain a data sampling sequence; an integral composition circuit for performing integral composition on the data flow to obtain a quantized digital signal; a logic circuit for outputting a corresponding level signal according to the data sampling sequence and the quantized digital signal.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a phase detector and a clock and data recovery circuit. Background technique [0002] In various data transmission interface circuits, the receiving end needs to retime the data sent by the sending end through a Clock and Data Recovery (CDR) circuit. In the CDR circuit, it is necessary to use a phase detector to judge the phase relationship between the recovered clock signal and the data symbols, so as to adjust the clock signal through a feedback loop to obtain an optimal sampling point. [0003] The Bang-Bang phase detector is a kind of phase detector commonly used in the CDR circuit at present. The circuit structure of the traditional Bang-Bang phase detector is as follows: figure 1 as shown, figure 1 It is a circuit structure diagram of a traditional Bang-Bang phase detector, which includes a data sampling circuit, an edge sampling circuit and a logic circuit. Its basic ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H03L7/091H03L7/107
CPCH03L7/091H03L7/1072
Inventor 康裕航李志才巫朝发宋琳黄志正
Owner CHIPONE TECH BEIJINGCO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap