ICS9FG110 Advance Information Integrated Circuit Systems, Inc. Programmable FTG for Differential PCI-Express Recommended Application: Pin Configuration Frequency Timing Generator for Differential PCI-Express clocks REFIN 1 28 VDDA SDATA 2 27 GNDA 26 IREF SCLK 3 *PD# 4 PCIEXT0 5 ICS9FG110 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 PCIEXC0 6 VDDPCIEX 7 GND 8 PCIEXT1 9 22 VDDPCIEX 21 GND 20 PCIEXT5 PCIEXC2 12 19 PCIEXC5 18 PCIEXT4 17 PCIEXC4 PCIEXT3 13 16 VDDPCIEX PCIEXC3 14 15 GND PCIEXC1 10 PCIEXT2 11 Key Specifications: • Output cycle-to-cycle jitter < 85 ps • Output to output skew < 85 ps • +/-300 ppm frequency accuracy on output clocks 25 MODE_SEL** 24 PCIEXT6 23 PCIEXC6 28-SSOP/TSSOP * This pin have 120K pull-up to VDD ** This pin have 120K pull-down to GND Power Groups Functionality Table MODE_SEL 0 1 PCIEX Freq 100 100 Spread Spectrum % Spread Tracking Input +/- 0.25 Center Spread Pin Number Description VDD GND 28 27 Analog pow er & GND for CPU Core 7, 22 8, 15, 21 Pow er & GND for PCI Express Clock Outputs Block Diagram REFIN Programmable Spread PLL1 SCLK SDATA Control Logic Programmable Frequency Dividers PCIEXC (6:0) PCIEXT (6:0) 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.