@Hi Paul,
Thanks for your reply. I have try you suggested on EVB , it's works on DPLL free run once setting 255.76 MHz.
Then divide 16 on Q0 ,Fout =14.11 MHz.
But, how can I used it on profiles 0 which setting as below ? Thanks.
Value | Unit | Minimum | Maximum | |
System Clock Period / Frequency | 972 | MHz | 500 | 1000 |
Selection Priority | 0 | 0 | 7 | |
Promoted Priority | 0 | 0 | 0 | |
Nominal Reference Period / Frequency | 19.44 | MHz | 0.000001 | 800 |
Inner Tolerance | 100 | ppm | 1 | 100000 |
Outer Tolerance | 1000 | ppm | 100 | 100000 |
Validation Timer | 10 | ms | 0 | 65535 |
Redetection Timer | 100 | ms | 0 | 65535 |
Feed Forward Divide (R) | 19 | 2 | 19440000 | |
Feed Back Divide (S) | 220 | 62 | 380 | |
Feed Back Fraction (U) | 65 | 0 | 99 | |
Feed Back Fraction (V) | 100 | 0 | 1023 | |
(calculated - PFD frequency) | 1.023 | MHz | ||
(calculated - DDS frequency) | 225.760 | MHz | ||
Loop Bandwidth | 0.001 | Hz | 0.001 | 51157.8947 |
Phase Margin | 30 | deg | 30 | 88 |
3rd Pole Attenuation Offset | 0.000005 | kHz | 0.000005 | 1023.15789 |
3rd Pole Attenuation | 3 | dB | 3 | 3 |
(calculated - alpha) | 2.96652E-12 | (-5.6 ppm) | ||
(calculated - beta) | -2.77179E-10 | (4.3 ppm) | ||
(calculated - gamma) | -3.58281E-10 | (2.3 ppm) | ||
(calculated - delta) | 1.03671E-09 | (-17.0 ppm) | ||
Phase Lock Threshold | 1000 | ps | 1 | 65535 |
Phase Lock Fill Rate | 32 | 1 | 255 | |
Phase Lock Drain Rate | 68 | 1 | 255 | |
(calculated - allowable jitter - RMS) | 1.006 | ns | ||
(calculated - probability below threshold) | 0.68 | |||
Frequency Lock Threshold | 500 | ps | 1 | 5144.03292 |
Frequency Lock Fill Rate | 32 | 1 | 255 | |
Frequency Lock Drain Rate | 68 | 1 | 255 | |
(calculated - allowable jitter - RMS) | 502.787 | ps | ||
(calculated - probability below threshold) | 0.68 |