Input baseband signal. The input to the CDR must be applied as one sample at a time and not as a vector.

Data Types:double

Clock phase offset, specified as a real scalar in the range [0, 0.5] in fraction of symbol time.Phase offsetmanually shifts clock probability distribution function (PDF) for better bit error rate (BER).

Programmatic Use

Data Types:double

Reference clock offset impairment, specified as a real scalar in the range [0, 300] in parts per million (ppm).Reference offset (ppm)is the deviation between transmitter oscillator frequency and receiver oscillator frequency.

Programmatic Use

Data Types:double

Early or late CDR count threshold to trigger a phase update, specified as a unitless real positive integer ≥5. Increasing the value ofEarly/late count thresholdprovides a more stable output clock phase at the expense of convergence speed. Because the bit decisions are made at the clock phase output, a more stable clock phase has a better bit error rate (BER).

Early/late count thresholdalso controls the bandwidth of the CDR which is approximately calculated by using the equation:

$$\text{Bandwidth}=\frac{1}{\text{Symbol time}·\text{Early/late threshold count}·\text{Step}}$$

Programmatic Use

Data Types:double

Clock phase resolution, specified as a real scalar in fraction of symbol time.Step (symbol time)is the inverse of the number of phase adjustments in CDR.

Programmatic Use

Data Types:double

抽样门闩亚稳态电压,指定为a real scalar in volts. If the data sample voltage lies within the region (±Sensitivity (V)), there is a 50% probability of bit error.

Programmatic Use

Data Types:double

Select to includePhase Offsetas a parameter in the IBIS-AMI file. If you deselectPhase Offset, it is removed from the AMI files, effectively hard-codingPhase Offsetto its current value.

Select to includeReference offsetas a parameter in the IBIS-AMI file. If you deselectReference offset, it is removed from the AMI files, effectively hard-codingReference offsetto its current value.