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EP2C8A Datasheet(PDF) 150 Page - Altera Corporation |
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EP2C8A Datasheet(HTML) 150 Page - Altera Corporation |
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150 / 168 page  5–60 Altera Corporation Cyclone II Device Handbook, Volume 1 February 2008 Timing Specifications In order to determine the transmitter timing requirements, mini-LVDS receiver timing requirements on the other end of the link must be taken into consideration. The mini-LVDS receiver timing parameters are typically defined as tSU and tH requirements. Therefore, the transmitter timing parameter specifications are tCO (minimum) and tCO (maximum). Refer to Figure 5–4 for the timing budget. The AC timing requirements for mini-LVDS are shown in Figure 5–6. Figure 5–6. mini-LVDS Transmitter AC Timing Specification Notes to Figure 5–6: (1) The data setup time, tSU, is 0.225 × TUI. (2) The data hold time, tH, is 0.225 × TUI. Device operation in Mbps ×10 100 — 311 100 — 311 100 — 311 Mbps ×8 80 — 311 80 — 311 80 — 311 Mbps ×7 70 — 311 70 — 311 70 — 311 Mbps ×4 40 — 311 40 — 311 40 — 311 Mbps ×2 20 — 311 20 — 311 20 — 311 Mbps ×1 10 — 311 10 — 311 10 — 311 Mbps tDUTY — 45 — 55 45 — 55 45 — 55 % TCCS — — — 200 — — 200 — — 200 ps Output jitter (peak to peak) — — — 500 — — 500 — — 500 ps tRISE 20–80% — — 500 — — 500 — — 500 ps tFALL 80–20% — — 500 — — 500 — — 500 ps tLOCK — — 100 — — 100 — — 100 μs Table 5–49. Mini-LVDS Transmitter Timing Specification (Part 2 of 2) Symbol Conditions –6 Speed Grade –7 Speed Grade –8 Speed Grade Unit Min Typ Max Min Typ Max Min Typ Max tSU (1) tH (2) TUI tSU (1) tH (2) LVDSCLK[]n LVDSCLK[]p LVDS[]p LVDS[]n |
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