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VSC7440 Datasheet(PDF) 398 Page - Microsemi Corporation |
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VSC7440 Datasheet(HTML) 398 Page - Microsemi Corporation |
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398 / 444 page  Electrical Specifications VMDS-10492 VSC7440 Datasheet Revision 4.2 381 The following table lists AC characteristics for the 6G receiver operating in 100BASE-FX, SGMII, SFP, 2.5G, and 1000BASE-KX modes. Applies to the S[6:5]_RXN/P pins. Differential output return loss RLOSDD22 –10 dB 50 MHz to 625 MHz Differential output return loss RLOSDD22 –10 + 10 x log (ƒ/625 MHz) dB 625 MHz to 1250 MHz Rise time and fall time1 tR, tF 60 320 ps 20% to 80% Interpair skew tSKEW 20 ps Random jitter RJ 0.15 UIP-P At BER 10–12 Deterministic jitter DJ 0.10 UIP-P Total jitter TJ 0.25 UIP-P Wideband SyncE jitter TWJ 0.5 UIP-P Measured according to ITU-T G.8262, section 8.3 Eye mask X1 0.125 UI Eye mask X2 0.325 UI Eye mask Y1 3502 mV Eye mask Y2 800 mV 1. Slew rate is programmable. 2. Compatibility to supported standard requires VDD_VS = 1.2 V. Table 294 • 100BASE-FX, SGMII, SFP, 2.5G, 1000BASE-KX Receiver Parameter Symbol Minimum Maximum Unit Condition Data rate 125 – 100 ppm 125 + 100 ppm Mbps 100BASE-FX. Data rate 1.25 – 100 ppm 1.25 + 100 ppm Gbps SGMII, SFP, 1000BASE-KX. Data rate 3.125 – 100 ppm 3.125 + 100 ppm Gbps 2.5G. Differential input return loss RLISDD11 –10 dB 50 MHz to 625 MHz. Differential input return loss RLISDD11 –10 + 10 x log (ƒ/625 MHz) dB 625 MHz to 1250 MHz. Jitter tolerance, total1 TOLTJ 600 ps Measured according to IEEE 802.3 Clause 38.6.8. Jitter tolerance, deterministic1 TOLDJ 370 ps Measured according to IEEE 802.3 Clause 38.6.8. Jitter tolerance, duty cycle distortion TOLDCD 1.4 nsP-P 100BASE-FX. Measured according to ISO/IEC 9314-3:1990. Jitter tolerance, data dependent TOLDDJ 2.2 nsP-P 100BASE-FX. Measured according to ISO/IEC 9314-3:1990. Jitter tolerance, random TOLRJ 2.27 nsP-P 100BASE-FX. Measured according to ISO/IEC 9314-3:1990. Table 293 • 100BASE-FX, SGMII, SFP, 2.5G, 1000BASE-KX Transmitter (continued) Parameter Symbol Minimum Maximum Unit Condition |
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