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CY28158

Part Number	CY28158
Manufacturer	Cypress Semiconductor
Description	Spread Spectrum Timing Solution for Serverworks Chipset
Published	Mar 26, 2005
Detailed Description	CY28158 Spread Spectrum Timing Solution for Serverworks Chipset Features • Maximized EMI suppression using Cypress’s sp...
Datasheet	CY28158 PDF File

Overview

CY28158 Spread Spectrum Timing Solution for Serverworks Chipset Features • Maximized EMI suppression using Cypress’s spread spectrum technology • Based on Industry Standard CK133 Pinout with all outputs compliant to CK98 specifications • 0.
5% downspread outputs deliver up to 10dB lower EMI • 6 skew-controlled copies of CPU output • 6 copies of PCI output (synchronous w/CPU output) • 2 copies of 66 MHz fixed frequency 3.
3V clock • 3 copies of 16.
67 MHz IOAPIC clock, synchronous to CPU clock • 1 copy of 48 MHz USB output • 2 copies of 14.
31818 MHz reference clock • Programmable to 133 or 100 MHz operation • Power management control pins for clock stop and shut down • Available in 56-pin SSOP Key Specifications Supply Voltages:.
.
.
VDD33 = 3.
3V ± 5% .
.
.
.
VDD25 = 2.
5V ± 5% CPU Output Jitter: .
.
<150 ps CPU Output Skew: .
.
.
...

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CY28158 Spread Spectrum Timing Solution for Serverworks Chipset - Cypress Semiconductor

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