What is the maximum jitter allowed on MCLK?
MCLK is used internally as a reference for the clock recovery and jitter attenuation DPLLs. We strongly recommend a jitter free, independent MCLK clock from a crystal oscillator. Any jitter on MCLK will be added to the RCLK output transparently. The designer should decide the maximum output jitter that can be tolerated at the output given the specifications the equipment should comply with. In addition, since MCLK is used in the clock recovery PLLs, occasional jitter hits may induce bit errors. What is the maximum TCLK gap width the LXT384/6 can tolerate? In multiplexer applications TCLK may be gapped due to stuffing and de-stuffing. The LXT384/6 jitter attenuator includes a FIFO that can accommodate a gapped TCLK. The limiting factor for the maximum gap width is the FIFO length.
