DATASHEET
ICS9FG104E
FREQUENCY GENERATOR FOR PCIE GEN1/2, USB3.0, QPI & SATA
Description
Features/Benefits
The ICS9FG104E is a frequency generator that provides 4
differential HCSL output pairs. It can be used to drive PCIe
Gen1/2, SATA and USB3.0 devices. The part can use
either a 14.31818 MHz or 25 MHz crystal. The 9FG104E
can also be driven by a reference input clock instead of a
crystal. It provides outputs with cycle-to-cycle jitter of less
than 50 ps and output-to-output skew of less than 35 ps.
• Generates common frequencies from 14.318MHz or
Recommended Application
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Frequency Generator for CPU, PCIe Gen1/2, SATA and
USB3.0
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Output Features
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• 4 - HCSL differential outputs
• 1 - 3.3V REF output (either 14.318M or 25M depending
on XTAL)
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25MHz
Crystal or reference input
4 - 0.7V current-mode HCSL output pairs
Supports Serial-ATA at 100MHz
Two spread spectrum modes: -0.5% down spread and
+/-0.25% center spread; Lower EMI
31.5KHz spread modulation rate; passes USB3
compliance testing
Unused outputs may be disabled in either driven or Hi-Z
state for power manangement
I-temp version available; supports embedded
applications
Key Specifications
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Cycle to cycle jitter: < 50ps
Phase jitter: PCIe Gen1/2
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