Datasheet > ASM3P2856B

ASM3P2856B

更新时间： 2024-11-25 06:38:11

品牌	Logo	应用领域
PULSECORE		时钟发生器
页数	文件大小	规格书
8页	355K
描述
Custom Clock generator for LCD Projector

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ASM3P2856B 数据手册

ASM3P2856A

ASM3P2856B

November 2006

rev0.1

Custom Clock generator for LCD Projector

Product Description

Features

ASM3P2856A/B generate the required four custom clock

frequencies for the LCD Projector. An inexpensive

14.7456MHz crystal is used to generate a 14.7456MHz

used by the microcomputer, a 27MHz used by Video, a

non-spread 65MHz, and a centre spread 65MHz clock used

by the LCD projector system. The spread spectrum clock

has +/- 0.5% or +/- 1% spread options. The spread

spectrum clock of ASM3P2856A/B reduces electromagnetic

interference (EMI) at the clock source. This allows

significant system cost savings by reducing the number of

circuit board layers and shielding that are required to pass

EMI regulations.

•

Custom Clock Generator for LCD Projector

Generates EMI optimized clock signals for

LCD Projector system

Uses an inexpensive 14.7456 MHz crystal for

generating the required Outputs

Frequency outputs:

• CLK1 : 27.002MHz (± 20 ppm)

• CLK2 : 14.7456MHz (Zero ppm)

• CLK3 : 65MHz (± 15 ppm)

• CLK4,CLK5 : 65MHz (±15 ppm) Spread

Spectrum Clock

• ASM3P2856A: +/- 1% centre spread

ASM3P2856B: selectable +/-1.0% & +/-1.5%

Centre Spread option

•

Applications

•

Supply voltage range 3.3V ± 0.3V.

Available in 16 Pin TSSOP

Available in Commercial Temperature range

ASM3P2856A/B is targeted for use in LCD Projectors.

Block Diagram

SSON SS%

CLK1

CLK2

CLK3

XIN

Crystal

PLL

Oscillator

XOUT

CLK4

CLK5

GND

PulseCore Semiconductor Corporation

1715 S. Bascom Ave Suite 200 Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018

www.pulsecoresemi.com

Notice: The information in this document is subject to change without notice.

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