| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a serial interface circuit surely conducting an operation confirmation test, while keeping the circuit scale small. <P>SOLUTION: A test controller 13 outputs pseudo-random data to a PLL circuit 12 for transmission, which generates a clock including random jitters, and a serializer 11 converts parallel transmission data Transmit Data into serial transmission data SO, by using the clock, and inputs the serial transmission data to a clock data recovery circuit 22 via a serial loop-back circuit 30 and a multiplexer 24. The clock data recovery circuit 22 fetches the serial transmission data SO with one of the clocks from a PLL circuit 21 for reception and generates parallel data Recovered Data using a deserializer 23. <P>COPYRIGHT: (C)2008,JPO&INPIT |
