Method and apparatus for receiving burst data without using external detection signal

Patent metadata

Field	Value
Publication number	US-8995595-B2
Application number	US-201314132721-A
Country	US
Kind code	B2
Filing date	Dec 18, 2013
Priority date	Jul 1, 2009
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

Apparatus and method for receiving burst data signal without using external detection signal are disclosed. The apparatus can include a clock data recovery (CDR) circuit to generate a clock signal, and a detection circuit to detect an initial portion in the data recovered from the input signal. The CDR circuit can have a first mode that attempts to synchronize the clock signal with a reference data signal, and a second mode that attempts to synchronize the clock signal with the burst data signal and to recover data based on the clock signal. The apparatus can include a controller to conduct a process including, in sequence, setting the CDR circuit in the first mode, setting the CDR circuit in the second mode, and keeping the CDR circuit in the second mode when the detection circuit detects the initial portion in the recovered data.

First claim

What is claimed is:

1. An apparatus for receiving a burst data signal having data edges and corresponding to burst data including an initial portion, the apparatus comprising:
an input circuit configured to receive an electrical signal and output an input signal;
a reference data signal generator configured to generate a reference data signal having reference edges;
a clock data recovery (CDR) circuit configured to generate a clock signal having clock edges, the CDR circuit ha…

Assignees

• Megachips Corp

Inventors

• Nishi Yoshinori
• Konishi Masahiro

Classifications

• H03L7/143

  Electricity · mapped topic

• H04L7/046

  Electricity · mapped topic

• H04L7/0083

  Electricity · mapped topic

• H04L7/0075 Primary

  Electricity · mapped topic

• H03L7/104

  Electricity · mapped topic