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VSC880TY датащи(PDF) 20 Page - Vitesse Semiconductor Corporation |
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VSC880TY датащи(HTML) 20 Page - Vitesse Semiconductor Corporation |
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20 / 28 page ![]() VITESSE SEMICONDUCTOR CORPORATION Data Sheet VSC880 High Performance 16x16 Serial Crosspoint Switch Page 20 G52191-0, Rev 4.2 01/05/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com Internet: www.vitesse.com AC Characteristics Table 1: LVDS and TTL Outputs Figure 9: Parallel Data Input Timing Diagram Table 2: Transmit Data Input Timing Table Note: Duty cycle for TREFCLK is 50% +/- 10% worst case Figure 10: Parallel Data Output Timing Diagram Parameters Description Min Typ Max Units Conditions TR,TTL TTL Output Rise Time 2.5 ns 10-90% @ 50pF TF,TTL TTL Output Fall Time 2.5 ns 10-90% @ 50pF TR,LVDS LVDS Output Rise Time 100 ps 20-80% TF,LVDS LVDS Output Fall Time 100 ps 20-80% Parameter Description Min Typ Max Units TREFCLK Reference (word) clock period 16 ns FREFCLK Reference clock frequency stability 100 ppm JREFCLK Reference clock input jitter 7 ps RMS TINSU Parallel data setup time with respect to REFCLK 1 ns TINH Parallel data hold time with respect to REFCLK 2 ns TSKEW REFCLK to REFCLK skew using parallel switch chips 1 ns TREFCLK TINSU TINH REFCLK DATA[15:0], FI[3:0], WEN, CEN, CCLK, TINT INT TINT |
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