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Multi-channel serial connection signal receiving system

A signal receiving, multi-channel technology, applied in the direction of instruments, electrical digital data processing, etc., can solve the problems of large chip area for analog clock data recovery, overall price and power consumption increase, high power, etc.

Inactive Publication Date: 2018-04-06
MSTAR SEMICON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As known to those of ordinary skill in the technical field to which the present invention belongs, the analog clock data recovery (ACDR) circuit has a large chip area and high power, which will jointly increase the overall price and power consumption of this type of signal receiving system

Method used

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  • Multi-channel serial connection signal receiving system
  • Multi-channel serial connection signal receiving system
  • Multi-channel serial connection signal receiving system

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Embodiment Construction

[0043] A specific embodiment according to the present invention is a multi-channel serial connection signal receiving system, its functional block diagram is as follows figure 2 shown. In practice, the multi-channel serial connection signal receiving system 200 can be integrated in various electronic devices such as television systems, computer screens, and projectors, and can also exist independently. Some of the following descriptions take the display port (DP) interface specification as an example, but those of ordinary skill in the technical field of the present invention can understand that the concept of the present invention can be applied to various multi-channel serial connection signal receiving systems, Its scope is not limited to display port (DP) interface.

[0044] Such as figure 2 As shown, the multi-channel serial connection signal receiving system 200 includes a clock generating circuit 210 and a plurality of data receiving channels ( 221 - 224 ). It shou...

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Abstract

The multi-channel serial connection signal receiving system provided by the present invention includes a clock generating circuit and a plurality of data receiving channels. The clock generating circuit provides a basic clock signal. The plurality of data receiving channels respectively receive an input signal and the basic clock signal, and each includes a phase detection circuit, a multi-stage digital clock data recovery circuit and a phase adjustment circuit. The phase detection circuit samples the input signal according to a sampling clock signal to generate a sampled signal. The multi-stage digital clock data recovery circuit applies a digital clock data recovery procedure to the sampled signal to generate a phase adjustment information. The phase adjustment circuit adjusts the phase of the basic clock signal according to the phase adjustment information to generate the sampling clock signal.

Description

technical field [0001] The present invention relates to a signal receiving interface, and in particular to a circuit architecture of a multi-channel serial connection signal receiving interface. Background technique [0002] With the advancement of electronic related technologies, various types of display devices are becoming more and more popular. For TV systems, computer systems, projectors, digital cameras, CD players, mobile phones, and even game consoles and other electronic devices, there is no need for a good video and audio transmission interface. Display Port (DisplayPort, DP) is one of the latest multimedia receiving interfaces. [0003] figure 1 Front-end functional block showing DisplayPort (DP) receive circuitry. Such as figure 1 As shown, there are four pairs of differential image data signals Data#0, Data#1, Data#2, Data#3 input into the DP receiver, and provided to the analog front-end circuits 110A˜110D respectively. The signals preliminarily processed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/28
Inventor 林柏年翁孟泽李俊毅
Owner MSTAR SEMICON INC