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| Integrated Circuit Systems, Inc. ICS9FG110 Advance Information Programmable FTG for Differential PCI-Express Recommended Application: Pin Configuration Frequency Timing Generator for Differential PCI-Express clocks REFIN 1 28 VDDA 27 GNDA 26 IREF Features: * Generates common PCI-Express frequencies from reference input clock (33.33MHz) * 7 - 0.7V current-mode differential output pairs * Three spread spectrum modes: spread tracking mode, 0 to -0.5 downspread and +/-0.25% centerspread * Support for M/N programming * Programmable spread percentage * Programmable output divider * SMBus address is DC/DD Key Specifications: * Output cycle-to-cycle jitter < 85 ps * Output to output skew < 85 ps * +/-300 ppm frequency accuracy on output clocks SDATA 2 SCLK 3 *PD# 4 PCIEXC0 6 VDDPCIEX 7 GND 8 PCIEXT1 9 PCIEXC1 10 PCIEXT2 11 PCIEXC2 12 PCIEXT3 13 PCIEXC3 14 ICS9FG110 PCIEXT0 5 25 MODE_SEL** 24 PCIEXT6 23 PCIEXC6 22 VDDPCIEX 21 GND 20 PCIEXT5 19 PCIEXC5 18 PCIEXT4 17 PCIEXC4 16 VDDPCIEX 15 GND 28-SSOP/TSSOP * This pin have 120K pull-up to VDD ** This pin have 120K pull-down to GND Functionality Table MODE_SEL 0 1 PCIEX Freq 100 100 Spread Spectrum % Spread Tracking Input +/- 0.25 Center Spread Power Groups Pin Number VDD 28 7, 22 GND 27 8, 15, 21 Description Analog pow er & GND for CPU Core Pow er & GND for PCI Express Clock Outputs Block Diagram REFIN Programmable Spread PLL1 Control Logic Programmable Frequency Dividers PCIEXC (6:0) PCIEXT (6:0) SCLK SDATA MODE_SEL I REF 0872--12/11/03 ADVANCE INFORMATION documents contain information on products in the formative or design phase development. Characteristic data and other specifications are design goals. ICS reserves the right to change or discontinue these products without notice. Third party brands and names are the property of their respective owners. |
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