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VSC7212 датащи(PDF) 21 Page - Vitesse Semiconductor Corporation |
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VSC7212 датащи(HTML) 21 Page - Vitesse Semiconductor Corporation |
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21 / 34 page ![]() VITESSE SEMICONDUCTOR CORPORATION VITESSE SEMICONDUCTOR CORPORATION Preliminary Data Sheet VSC7212 Gigabit Interconnect Chip G52268-0, Rev 3.3 Page 21 04/10/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800)-VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com Internet: www.vitesse.com Figure 15: Transmit Input Timing Waveforms with TMODE = 11X (“ASIC-Friendly” Timing) Table 10: Transmit Input AC Characteristics with TMODE = 11X Figure 16: Transmit Serial Timing Waveforms Table 11: Transmit Serial AC Characteristics Parameters Description Min Max Units Conditions TS Input Skew relative to the rising edge of TBC — 2.0 bc Measured between the valid data level of the input and the 1.4V point of TBC Parameters Description Min Max Units Conditions TSDR, TSDF TX+/- rise and fall time — 330 ps Between VOL(MAX) and VOH(MIN) TLAT Latency, REFCLK to TX0 Latency, TBC to TX0 22bc+0.2ns 36bc+0.0ns 22bc+0.8ns 38bc+0.3ns bc + ns ENDEC=1 TMODE=000 ENDEC=1 TMODE=10X TJ Serial data output Total Jitter (p-p) — 192 ps IEEE 802.3z Clause 38.69, Tested on a sample basis TDJ Serial data output Deterministic Jitter (p-p) — 80 ps IEEE 802.3z Clause 38.69, Tested on a sample basis Valid TS Valid Valid TS Internal Clock (from PLL) TBC T(7:0) C/D WSEN TSDR, TSDF TLAT TX+, TX- TX0 Internal Clock (from PLL) |
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