| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a noise from being generated and quality from being deteriorated in a waveform data, when generating synchronized word clock with a plurality of serially connected LSIs. <P>SOLUTION: A master LSI 10 and a slave LSI 120 generate operation clocks synchronized with the same synchronization clock, the operation clocks are counted by operation counters 15, 25, to generate respectively the first word clock and the second word clock. An RT correction part 27 of the slave LSI 120 determines whether a count value of the operation counter 25 at a time point in timing inputted with the first word clock from the master LSI 10 comes within a prescribed range corresponding to an allowance limit of phase shift of a transmission clock in serial communication or not, the operation counter 25 is reset when not coming within the prescribed range, and count timing of the operation counter 25 is made to conform to count timing of the operation counter 15. <P>COPYRIGHT: (C)2010,JPO&INPIT |
