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EP3SL150 Datasheet(PDF) 26 Page - Altera Corporation |
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EP3SL150 Datasheet(HTML) 26 Page - Altera Corporation |
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26 / 341 page  t OUTCCJ_IO (5), (8) Cycle to Cycle Jitter for clock output on regular IO (F OUT 100 MHz) — — 600 — — 600 — — 600 — — 600 — — 750 ps (p-p) Cycle to Cycle Jitter for clock output on regular IO (F OUT <100 MHz) —— 60 —— 60 — — 60 — —60 — —75 mUI (p-p) tCASC_OUTPJ_DC (5), (7) Period Jitter for dedicated clock output in cascaded PLLs (F OUT 100 MHz) — — 250 — — 250 — — 250 — — 250 — — 325 ps (p-p) Period Jitter for dedicated clock output in cascaded PLLs (F OUT 100 MHz) —— 25 —— 25 — — 25 — —25 — — 32.5 mUI (p-p) f DRIFT Frequency drift after PFDENA is disabled for duration of 100 s — — ±10 — — ±10 — — ±10 — — ±10 — — ±10 % Notes to Table 1–20: (1) This specification is limited in the Quartus II software by the I/O maximum frequency. The maximum I/O frequency is different for each I/O standard. (2) This specification is limited by the lower of the two: I/O f max or fout of the PLL. (3) A high input jitter directly affects the PLL output jitter. To have low PLL output clock jitter, you must provide a clean clock source, which is less than 120 ps. (4) FREF is fIN/N when N = 1. (5) Peak-to-peak jitter with a probability level of 10–12 (14 sigma, 99.99999999974404% confidence level). The output jitter specification applies to the intrinsic jitter of the PLL, when an input jitter of 30 ps is applied. (6) High bandwidth PLL settings are not supported in external feedback mode. (7) The cascaded PLL specification is only applicable with the following conditions: a) Upstream PLL: 0.59 MHz Upstream PLL BW < 1 MHz b) Downstream PLL: Downstream PLL BW > 2 MHz (8) External memory interface clock output jitter specifications use a different measurement method and are available in Table 1–33 on page 1–29. Table 1–20. PLL Specifications for Stratix III Devices (Part 3 of 3) Symbol Parameter C2 C3, I3 C4, I4 C4L, I4L Unit V CCL = 1.1 V V CCL = 1.1 V V CCL = 1.1 V V CCL = 1.1 V V CCL = 0.9 V Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max |
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