Cypress Semiconductor CY2291 Instrukcja Użytkownika Pobierz pdf

Three-PLL General Purpose

EPROM Programmable Clock Generator

CY2291/CY2291F/CY2291I

CY2292/CY2292F/CY2292I

CY2295/CY2295I

CypressSemiconductorCorporation • 3901NorthFirstStreet • SanJose • CA 95134 • 408-943-2600

November 10, 1998

Features Benefits

• Three integrated phase-locked loops Provides all necessary system clocks in a single package

• EPROM programmability Easy customization and fast turnaround time

• Low skew, low jitter, high accuracy outputs Meets critical timing requirements in complex system designs

• Power management options (Shutdown, OE, Suspend) Supports low power applications

• Frequency select option Enables design flexibility and margin testing

• Smooth slewing on CPUCLK Allows downstream PLLs to stay locked on CPUCLK output

• 3.3V or 5V operation Enables application compatibility

Part Number Outputs Input Frequency Range Output Frequency Range Specifics

CY2291 8 10 MHz–25 MHz (external crystal)

1 MHz–30 MHz (reference clock)

76.923 kHz–100 MHz (5V)

76.923 kHz–80 MHz (3.3V)

Factory Programmable

Commercial Temperature

CY2291I 8 10 MHz–25 MHz (external crystal)

1 MHz–30 MHz (reference clock)

76.923 kHz–90 MHz (5V)

76.923 kHz–66.6 MHz (3.3V)

Factory Programmable

Industrial Temperature

CY2291F 8 10 MHz–25 MHz (external crystal)

1 MHz–30 MHz (reference clock)

76.923 kHz–90 MHz (5V)

76.923 kHz–66.6 MHz (3.3V)

Field Programmable

Commercial Temperature

CY2292 6 10 MHz–25 MHz (external crystal)

1 MHz–30 MHz (reference clock)

76.923 kHz–100 MHz (5V)

76.923 kHz–80 MHz (3.3V)

Factory Programmable

Commercial Temperature

CY2292I 6 10 MHz–25 MHz (external crystal)

1 MHz–30 MHz (reference clock)

76.923 kHz–90 MHz (5V)

76.923 kHz–66.6 MHz (3.3V)

Factory Programmable

Industrial Temperature

CY2292F 6 10 MHz–25 MHz (external crystal)

1 MHz–30 MHz (reference clock)

76.923 kHz–90 MHz (5V)

76.923 kHz–66.6 MHz (3.3V)

Field Programmable

Commercial Temperature

CY2295 8 10 MHz–25 MHz (external crystal)

1 MHz–30 MHz (reference clock)

76.923 kHz–100 MHz (5V)

76.923 kHz–80 MHz (3.3V)

Factory Programmable

Commercial Temperature

CY2295I 8 10 MHz–25 MHz (external crystal)

1 MHz–30 MHz (reference clock)

76.923 kHz–90 MHz (5V)

76.923 kHz–66.6 MHz (3.3V)

Factory Programmable

Industrial Temperature

32XIN

32XOUT

XTALIN

XTALOUT

S2/SUSPEND

S1

S0

SHUTDOWN

/

32K

CPU

EPROM

TABLE

CONFIGURATION

EPROM AND

TEST LOGIC

Available on CY2291 and CY2295 only

OSC.

XBUF

SYS

PLL

UTIL

PLL

CPU

PLL

OSC.

CLKF

CPUCLK

CLKA

CLKB

CLKC

CLKD

OUTPUT

MULTIPLEXER

AND

DIVIDERS

OE

Logic Block Diagram

1 2 3 4 5 6 7 8 9 10

Podsumowanie treści

Strona 1 - Three-PLL General Purpose

Three-PLL General Purpose EPROM Programmable Clock GeneratorCY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I CypressSemiconductorCorporation

Strona 2

CY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I© Cypress Semiconductor Corporation, 1998. The information contained herein is subject to ch

Strona 3

CY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I2Pin SummaryNamePin Number CY2291Pin Number CY2292Pin Number CY2295Description32XOUT 1 — 1 3

Strona 4

CY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I3OperationThe CY2291, CY2292 and CY2295 are a third-generation fam-ily of clock generators.

Strona 5

CY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I4Maximum Ratings(Above which the useful life may be impaired. For user guide-lines, not test

Strona 6

CY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I5Switching Characteristics[11]Parameter Name Description Min. Typ. Max. Unitt1Output Period

Strona 7

CY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I6Switching WaveformsAll Outputs, Duty Cycle and Rise/Fall Timet1CY2291-7OUTPUTt2t3t4Output T

Strona 8

CY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I7Document #: 38–00410–DTest Circuit0.1 µFVDD0.1 µFVDDCLK outCLOADGNDCY2291-11OUTPUTSOrdering

Strona 9

CY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I8CIRCLE ONE CY2291 CY2292 CY2295Company Engineer FAE/SalesPhone# Fax#CY2291/2/5 CUSTOM CONFI

Strona 10 - CY2295/CY2295I

CY2291/CY2291F/CY2291ICY2292/CY2292F/CY2292ICY2295/CY2295I9Package Diagrams20-Lead (300-Mil) Molded SOIC S551-85024-A16-Lead (150-Mil) Molded SOIC S16

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