CY223811SI-RGLT Просмотр технического описания (PDF) - Cypress Semiconductor

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CY223811SI-RGLT

Three-PLL General Purpose FLASH Programmable Clock Generator

Cypress Semiconductor 

CY22381

CY223811

Three-PLL General Purpose FLASH

Programmable Clock Generator

Features

■ Three integrated phase-locked loops

■ Ultra-wide divide counters (eight-bit Q, eleven-bit P, and

seven-bit post divide)

■ Improved linear crystal load capacitors

■ Flash programmability

■ Field programmability

■ Low-jitter, high-accuracy outputs

■ Power-management options (Shutdown, OE, Suspend)

■ Configurable crystal drive strength

■ Frequency select option through external LVTTL Input

■ 3.3 V operation

■ 8-pin small outline integrated circuit (SOIC) package

(CY22381)

■ 8-pin SOIC package with NiPdAu lead finish (CY223811)

■ CyClocks RT™ support

Logic Block Diagram

Functional Description

The CY22381 is the next-generation programmable Flash

programmable clock for use in networking, telecommunication,

datacom, and other general-purpose applications. The CY22381

offers up to three configurable outputs in a 8-pin SOIC, running

off a 3.3 V power supply. The on-chip reference oscillator is

designed to run off an 8–30-MHz crystal, or a 1–166-MHz

external clock signal. The CY22381 has a three PLLs driving 3

programmable output clocks. The output clocks are derived from

the PLL or the reference frequency (REF). Output post dividers

are available for either. The CY223811 is the CY22381 with

NiPdAu lead finish.

XTALIN

XTALOUT

OSC.

CONFIGURATION

FLASH

SHUTDOWN/OE

FS/SUSPEND

PLL1

11-BIT P

8-BIT Q

PLL2

11-BIT P

8-BIT Q

PLL3

11-BIT P

8-BIT Q

4×3

Crosspoint

Switch

Divider

7-BIT

Divider

7-BIT

Divider

7-BIT

CLKC

CLKB

CLKA

Cypress Semiconductor Corporation • 198 Champion Court

Document #: 38-07012 Rev. *I

• San Jose, CA 95134-1709 • 408-943-2600

Revised May 17, 2011

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