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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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VSC7440 데이터시트(PDF) 399 Page - Microsemi Corporation |
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VSC7440 데이터시트(HTML) 399 Page - Microsemi Corporation |
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399 / 444 page  Electrical Specifications VMDS-10492 VSC7440 Datasheet Revision 4.2 382 The following table lists the AC characteristics for the 6G transmitter operating in PCIe mode. Applies to the PCIE_TXN/P pins. The following table lists the AC characteristics for the 6G receiver operating in PCIe mode. Applies to the PCIE_RXN/P pins. Wideband SyncE jitter tolerance WJT 312.5 UIP-P 10 Hz to 12.1 Hz. Measured according to ITU-T G.8262, section 9.2. Wideband SyncE jitter tolerance WJT 3750/ƒ UIP-P 12.1 Hz to 2.5 kHz (ƒ). Measured according to ITU-T G.8262, section 9.2. Wideband SyncE jitter tolerance WJT 1.5 UIP-P 2.5 kHz to 50 kHz. Measured according to ITU-T G.8262, section 9.2. 1. Jitter requirements represent high-frequency jitter (above 637 kHz) and not low-frequency jitter or wander. Table 295 • PCIe Transmitter Parameter Symbol Minimum Typical Maximum Unit Condition Data rate 2.5 – 300 ppm 2.5 + 300 ppm Gbps Differential output return loss RLOSDD22 –10 dB 50 MHz to 1.25 GHz Common-mode return loss RLOSCC22 –6 dB 50 MHz to 1.25 GHz De-emphasized differential output voltage (ratio) Tode –3 –3.5 –4 dB Rise time and fall time1 1. Slew rate is programmable. Configure accordingly for compliance to supported standard. tR, tF 60 ps 20% to 80%. Recommended value. Total jitter TJ 0.25 UIP-P Differential amplitude VTX_DIFF_PP 8002 2. Compatibility to supported standard requires VDD_VS = 1.2 V supply for driver. 1200 mVP-P Table 296 • PCIe Receiver Parameter Symbol Minimum Maximum Unit Condition Data rate 2.5 – 300 ppm 2.5 + 300 ppm Gbps Differential input return loss RLISDD11 –10 dB 50 MHz to 1.25 GHz. Common-mode return loss RLISCC11 –6 dB 80 MHz to 1.25 GHz. Total jitter tolerance TJ 0.60 UIP-P Eye mask R_X1 0.30 UI Eye mask R_X2 0.70 UI Eye mask R_Y1 85 mV Eye mask R_Y2 600 mV Table 294 • 100BASE-FX, SGMII, SFP, 2.5G, 1000BASE-KX Receiver (continued) Parameter Symbol Minimum Maximum Unit Condition |
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