Microchip MPF050TL handleiding
Handleiding
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AC Switching Characteriscs
Data Sheet
© 2024 Microchip Technology Inc. and its subsidiaries
DS00003831E - 48
Table 5-26. Period Jier for Transceiver Clocks
5, 6
Transceiver clocks are generated within the FPGA and routed to/from Transceiver TX and RX through global networks.
Jitter specications listed in this table are applicable to –STD and –1 speed grade for all temperature grades.
Parameter Transceiver Clock Period Jitter Unit
% FF used (of
total FFs in
device)
1,2
0% 15% 25% 50% 75% %
Average toggle
rate
3
— 30% 30% 30% 30% %
Eective FF
toggle %
4
0% 4.5% 7.5% 15.0% 22.5% %
Maximum TX
clock period
jitter (absolute)
60 89 114 228 287 ps
Maximum TX
clock period
jitter (peak to
peak)
±30 ±44.5 ±57 ±114 ±143.5 ps
Maximum RX
clock period
jitter (absolute)
200 229 254 368 427 ps
Maximum RX
clock period
jitter (peak to
peak)
±100 ±114.5 ±127 ±184 ±213.5 ps
1. % Flip-Flop (FF) used is dened as the percentage of total device FFs that are switching in the
largest clock domain within the FPGA (including synchronous and divided clocks).
2. The 50% and 75% FF used per clock domain are only shown to illustrate the impact of high
utilization on a global clock net jitter. Typical designs are expected to have less than 25% FF used
per clock domain (as dened in the preceding note).
3. Measured jitter is generated at varying % FF used levels with a switching rate of 30%.
4. Eective FF toggle % is the product of % FF used and average toggle rate. In Table 5-26, jitter is
specied for an average toggle rate of 30%. To determine jitter for a given combination, multiply
FF used and average toggle rate then use the linear interpolation equation as shown in Figure
5-6.
5. Refer to Table 5-27 for formulas to calculate period jitter as a function of the clocking topology.
6. For further details, see the PolarFire Family Transceiver Users Guide (section Global Net Clock
Jitter).
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Productinformatie
| Merk | Microchip |
| Model | MPF050TL |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 18409 MB |
