843442AGILF

更新时间： 2024-11-04 06:33:15

品牌	Logo	应用领域
艾迪悌 - IDT		时钟发生器
页数	文件大小	规格书
13页	711K
描述
FemtoClock™ SAS/SATA Clock Generator

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中文翻译

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数据手册

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843442AGILF 数据手册

FemtoClock™ SAS/SATA Clock Generator

ICS843442I

DATA SHEET

General Description

Features

The ICS843442I is a low jitter, high performance clock

generator and a member of the FemtoClock™family of

silicon timing products. The ICS843442I is designed

for use in applications using the SAS and SATA

interconnect. The ICS843442I uses an external,

• Designed for use in SAS, SAS-2, and SATA systems

• Center ( 0.25%) Spread Spectrum Clocking (SSC)

• Down (-0.23% or -0.5%) SSC

HiPerClockS™

• Two differential 3.3V LVPECL output pairs

25MHz, parallel resonant crystal to generate two selectable output

frequencies: 75MHz and 150MHz. This silicon based approach

provides excellent frequency stability and reliability. The ICS843442I

features down and center spread spectrum (SSC) clocking

techniques.

• Crystal oscillator interface designed for 25MHz (C_L= 18pF)

frequency

• External fundamental crystal frequency ensures high reliability

and low aging

• Selectable output frequencies: 75MHz, 150MHz

• Output frequency is tunable with external capacitors

Applications

• RMS phase jitter at 150MHz (integrated from 12kHz to 20MHz):

• SAS/SATA Host Bus Adapters

1.07ps (typical)

• SATA Port Multipliers

• 3.3V operating supply

• SAS I/O Controllers

• -40°C to 85°C ambient operating temperature

• Available in lead-free (RoHS 6) package

• TapeDrive and HDD Array Controllers

• SAS Edge and Fanout Expanders

• HDDs and TapeDrives

• Disk Storage Enterprise

Pin Assignment

Block Diagram

F_SEL

Pulldown

nPLL_SEL

VEE

XTAL_OUT

XTAL_IN

SSC_SEL0

25MHz

XTAL_IN

nPLL_SEL

nQ0

FemtoClock™

OSC

0 = 75MHz

1 = 150MHz

(default)

PLL

XTAL_OUT

nQ1

SSC_SEL1

Pullup

F_SEL

ICS843442I

Clock Output

Control Logic

Pulldown

16-Lead TSSOP

4.4mm x 5.0mm x 0.925mm package body

G Package

SSC_SEL[1:0]

Top View

ICS843442AGI REVISION A JUNE 24, 2009

12 3 4 5 6 7...13

中文翻译

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843475-1	MACOM	获取价格	This instruction sheet covers Extraction Tools
843475-2	MACOM	获取价格	This instruction sheet covers Extraction Tools
843477-1	TE	获取价格	Extraction/Lance Reset
843477-2	TE	获取价格	Extraction/Lance Reset
843477-3	TE	获取价格	Extraction/Lance Reset
843477-4	TE	获取价格	Extraction/Lance Reset
843477-5	TE	获取价格	Extraction/Lance Reset
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