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公开(公告)号:JP2000232439A
公开(公告)日:2000-08-22
申请号:JP36358499
申请日:1999-12-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor: TONY S L-KICK , LATURELL DONALD R , LANE A SMITH
Abstract: PROBLEM TO BE SOLVED: To decrease the number of signal lines of a synchronous serial interface by putting a preamble code word into a data stream to be transmitted and detecting the preamble code word contained in the data stream via a synchronous preamble detection module. SOLUTION: A controller 100 stops intentionally the operation of a clock source 130 for a prescribed time to start the resynchronization and puts a preamble code word into a transmission data stream 116. A clock absence timer 132 of the controller 100 has a self-monitoring function to decide how long the controller 100 has stopped the output operation of the source 130 onto a clock signal line 110. Then a preamble inserting module 134 puts a preamble code word into a time slot after a satisfactory time elapses from a point of time when the clock received from a CODEC 106 is held.