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CY2280 Datasheet

100-MHz Pentium II Clock Synthesizer/Driver with Spread Spectrum for Mobile or Desktop PCs

0 CY2280 100-MHz Pentium® II Clock Synthesizer/Driver with Spread Spectrum for Mobile or Desktop PCs Features • Mixed 2.5V and 3.3V operation • Clock solution for Pentium® II, and other similar processor-based motherboards — Four 2.5V CPU clocks up to 100 MHz — Eight 3.3V sync. PCI clocks, one free-running — Two 3.3V 48-MHz USB clocks — Three 3.3.

Cypress Semiconductor
CY2280.pdf

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Cypress Semiconductor CY2280 Datasheet
0 CY2280 100-MHz Pentium® II Clock Synthesizer/Driver with Spread Spectrum for Mobile or Desktop PCs Features • Mixed 2.5V and 3.3V operation • Clock solution for Pentium® II, and other similar processor-based motherboards — Four 2.5V CPU clocks up to 100 MHz — Eight 3.3V sync. PCI clocks, one free-running — Two 3.3V 48-MHz USB clocks — Three 3.3V Ref. clocks at 14.318 MHz — Two 2.5V APIC clocks at 14.318 MHz or PCI/2 • EMI control — Spread spectrum clocking — Factory-EPROM programmable spread spectrum margin — Factory-EPROM programmable output drive and slew rate • Factory-EPROM programmable CPU clock frequencies for custom configurations • Available in space-saving 48-pin SSOP package Functional Description The CY2280 is a Spread Spectrum clock synthesizer/driver for a Pentium II, or other similar processor-based PC requiring 100-MHz support. All of the required system clocks are provided in a space-saving 48-pin SSOP package. The CY2280 can be used with the CY231x for a total sol.




CY22801 Universal Programmable Clock Generator (UPCG) Universal Programmable Clock Generator (UPCG) Features ■ Integrated phase-locked loop (PLL) ■ Field-Programmable ■ Input frequency range: ❐ Crystal: 8 MHz to 30 MHz ❐ CLKIN: 1 MHz to 133 MHz ■ Low-voltage complementary metal (LVCMOS) output frequency: ❐ Up to 200 MHz (commercial grade) ❐ Up.

Cypress Semiconductor
CY22801.pdf

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Cypress Semiconductor CY22801 Datasheet
CY22801 Universal Programmable Clock Generator (UPCG) Universal Programmable Clock Generator (UPCG) Features ■ Integrated phase-locked loop (PLL) ■ Field-Programmable ■ Input frequency range: ❐ Crystal: 8 MHz to 30 MHz ❐ CLKIN: 1 MHz to 133 MHz ■ Low-voltage complementary metal (LVCMOS) output frequency: ❐ Up to 200 MHz (commercial grade) ❐ Up to 166.6 MHz (industrial grade) oxide semiconductor ■ Special Features: ❐ Spread Spectrum ❐ VCXO ❐ Inputs: PD or OE, FS ■ Low-jitter, high-accuracy outputs ■ 3.3 V operation ■ Commercial and industrial temperature ranges ■ 8-pin small-outline integrated circuit (SOIC) package ■ Serial interface for device configuration Functional Description The CY22801 is a flash-programmable clock generator that supports various applications in consumer and communications markets. The device uses the Cypress-proprietary PLL along with Spread Spectrum and VCXO technology to make it one of the most versatile clock synthesizers in the market. The dev.





www.DataSheet4U.com CY22800 Universal Programmable Clock Generator (UPCG) Features • Spread Spectrum, VCXO, and Frequency Select • Input frequency range: — Crystal: 8–30 MHz — CLKIN: 0.5–100 MHz • Output frequency: — Commercial: 1–200 MHz • • • • — Industrial: 1–166 MHz Integrated phase-locked loop Low jitter, high accuracy outputs 3.3V operation.

Cypress Semiconductor
CY22800.pdf

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Cypress Semiconductor CY22800 Datasheet
www.DataSheet4U.com CY22800 Universal Programmable Clock Generator (UPCG) Features • Spread Spectrum, VCXO, and Frequency Select • Input frequency range: — Crystal: 8–30 MHz — CLKIN: 0.5–100 MHz • Output frequency: — Commercial: 1–200 MHz • • • • — Industrial: 1–166 MHz Integrated phase-locked loop Low jitter, high accuracy outputs 3.3V operation 8-pin SOIC package Benefits • Inventory of only one device, CY22800, is needed in various applications such as HDTV, STB, DVDR, etc. • Multiple predefined configurations that can be programmed into a single chip • Eliminates the need for expensive and difficult to use higher-order crystal • High-performance PLL tailored for multiple applications • Meets critical timing requirements in complex system designs • Enables application compatibility • Allows up to three different frequency selects Logic Block Diagram Pin Configuration CY22800 8-pin SOIC XIN/CLKIN XOUT VCXO FS2 FS1 FS0 OSC Q Φ P CLKC VCO OUTPUT DIVIDER XIN/CLKIN 1 2 3 4 8 7 .







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