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ICS9FG1904B-1

Integrated Circuit Systems
Part Number ICS9FG1904B-1
Manufacturer Integrated Circuit Systems
Description Frequency Generator
Published Dec 12, 2016
Detailed Description Integrated Circuit Systems, Inc. ICS9FG1904B-1 Frequency Generator for CPU, PCIe Gen 1, PCIe Gen 2 & FBD Recommended ...
Datasheet PDF File ICS9FG1904B-1 PDF File

ICS9FG1904B-1
ICS9FG1904B-1

Overview
Integrated Circuit Systems, Inc.
ICS9FG1904B-1 Frequency Generator for CPU, PCIe Gen 1, PCIe Gen 2 & FBD Recommended Application: DB1900GS/GSO with 15:4 output grouping Features: • Power up default is all outputs in 1:1 mode • DIF_(14:0) can be “gear-shifted” from the input CPU Host Clock • DIF_(18:15) can be “gear-shifted” from the input CPU Host Clock • Spread spectrum compatible • Supports output clock frequencies up to 400 MHz • 8 Selectable SMBus addresses • SMBus address determines PLL or Bypass mode Key Specifications: • DIF output cycle-to-cycle jitter < 50ps • DIF output-to-output skew < 100ps within a group Functionality at Power Up (PLL Mode) FS_A_4101 1 0 CLK_IN (CPU FSB) MHz 100 <= CLK_IN < 200 200<= CLK_IN <= 400 DIF_(18:0) MHz CLK_IN CLK_IN 1.
FS_A_410 is a low-threshold input.
Please see the VIL_FS and VIH_FS specifications in the Input/Supply/Common Output Parameters Table for correct values.
Power Down Functionality INPUTS CKPWRGD/...


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