adc clock timing recovery circuit and the error recovery method in Pr4 signal pre-processing of the signal processing channel region

摘要

Discloses an ADC clock timing error recovery circuits at the signal pre-processing region of the PR4 channel signal processing to recover the timing error of the ADC sampling clock signal from the pre-treatment area.; ADC clock timing error recovery circuits at the signal pre-processing of the PR4 signal processing channels of the present invention, the area is provided with ADC timing error detector, a timing recovery PLL unit and the ADC clock Phase compensation section. The ADC timing error detector receives the output signal of the ADC and detects a timing error. The timing recovery PLL unit generates the ADC clock signal compensation according to the output signal of the ADC timing error detection unit. The ADC clock Phase compensation unit allows to input the timing recovery PLL unit output signal with the sampling clock of the ADC.; Therefore, it is possible to recover the timing error of the ADC sampling clock signal from the pre-treatment zone to the ADC before the main signal processing to accurately convert the PR4 analog signal into a digital signal in accordance with the present invention.