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ICS9FG108D Datasheet(PDF) 14 Page - Integrated Device Technology |
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ICS9FG108D Datasheet(HTML) 14 Page - Integrated Device Technology |
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14 / 18 page 
IDTTM Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA 1542E 12/16/10 ICS9FG108D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA 14 Common Recommendations for Differential Routing Dimension or Value Unit Figure L1 length, route as non-coupled 50ohm trace 0.5 max inch 1 L2 length, route as non-coupled 50ohm trace 0.2 max inch 1 L3 length, route as non-coupled 50ohm trace 0.2 max inch 1 Rs 33 ohm 1 Rt 49.9 ohm 1 Down Device Differential Routing L4 length, route as coupled microstrip 100ohm differential trace 2 min to 16 max inch 1 L4 length, route as coupled stripline 100ohm differential trace 1.8 min to 14.4 max inch 1 Differential Routing to PCI Express Connector L4 length, route as coupled microstrip 100ohm differential trace 0.25 to 14 max inch 2 L4 length, route as coupled stripline 100ohm differential trace 0.225 min to 12.6 max inch 2 DIF Reference Clock HCSL Output Buffer L1 L1' Rs L2 L2' Rs L4' L4 L3 L3' Rt Rt PCI Express Down Device REF_CLK Input Figure 1: Down Device Routing HCSL Output Buffer L1 L1' Rs L2 L2' Rs L4' L4 L3 L3' Rt Rt PCI Express Add-in Board REF_CLK Input Figure 2: PCI Express Connector Routing |
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