CDCFR83ADBQG4

更新时间： 2024-09-30 11:06:27

品牌	Logo	应用领域
德州仪器 - TI		时钟驱动时钟驱动器时钟发生器
页数	文件大小	规格书
14页	371K
描述
Direct Rambus™ 时钟发生器 \| DBQ \| 24 \| -40 to 85

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CDCFR83ADBQG4 数据手册

CDCFR83A

www.ti.com

SCAS812–AUGUST 2005

DIRECT RAMBUS™ CLOCK GENERATOR

FEATURES

DBQ PACKAGE

(TOP VIEW)

•

533-MHz Differential Clock Source for Direct

Rambus™ Memory Systems for an 1066-MHz

Data Transfer Rate

REFCLK

•

Fail-Safe Power Up Initialization

Synchronizes the Clock Domains of the

Rambus Channel With an External System or

Processor Clock

GNDP

GNDI

GNDO

CLK

PCLKM

SYNCLKN

GNDC

•

Three Power Operating Modes to Minimize

Power for Mobile and Other Power-Sensitive

Applications

CLKB

GNDO

•

Operates From a Single 3.3-V Supply and

120 mW at 300 MHz (Typ)

IPD

MULT0

MULT1

STOPB

PWRDNB

Packaged in a Shrink Small-Outline Package

(DBQ)

NC − No internal connection

•

Supports Frequency Multipliers: 4, 6, 8, 16/3

No External Components Required for PLL

Supports Independent Channel Clocking

Spread Spectrum Clocking Tracking

Capability to Reduce EMI

•

Designed for Use With TI's 133-MHz Clock

Synthesizers CDC924 and CDC921

Cycle-Cycle Jitter Is Less Than 40 ps at

533 MHz

Certified by Gigatest Labs to Exceed the

Rambus DRCG Validation Requirement

Supports Industrial Temperature Range of

–40°C to 85°C

DESCRIPTION

The Direct Rambus clock generator (DRCG) provides the necessary clock signals to support a Direct Rambus

memory subsystem. It includes signals to synchronize the Direct Rambus channel clock to an external system or

processor clock. It is designed to support Direct Rambus memory on a desktop, workstation, server, and mobile

PC motherboards. DRCG also provides an off-the-shelf solution for a broad range of Direct Rambus memory

applications.

The DRCG provides clock multiplication and phase alignment for a Direct Rambus memory subsystem to enable

synchronous communication between the Rambus channel and ASIC clock domains. In a Direct Rambus

memory subsystem, a system clock source provides the REFCLK and PCLK clock references to the DRCG and

memory controller, respectively. The DRCG multiplies REFCLK and drives a high-speed BUSCLK to RDRAMs

and the memory controller. Gear ratio logic in the memory controller divides the PCLK and BUSCLK frequencies

by ratios M and N such that PCLKM = SYNCLKN, where SYNCLK = BUSCLK/4. The DRCG detects the phase

difference between PCLKM and SYNCLKN and adjusts the phase of BUSCLK such that the skew between

PCLKM and SYNCLKN is minimized. This allows data to be transferred across the SYNCLK/PCLK boundary

without incurring additional latency.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

DIRECT RAMBUS, Rambus are trademarks of Rambus Inc.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...14

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CDCFR83ADBQG4 替代型号

型号	品牌	替代类型	描述	数据表
CDCFR83ADBQR	TI	完全替代	Direct Rambus™ 时钟发生器 \| DBQ \| 24 \| -40 to 85
CDCFR83ADBQ	TI	完全替代	Direct Rambus™ 时钟发生器 \| DBQ \| 24 \| -40 to 85

与CDCFR83ADBQG4相关器件

型号	品牌	获取价格	描述	数据表
CDCFR83ADBQR	TI	获取价格	Direct Rambus™ 时钟发生器 \| DBQ \| 24 \| -40 to 85
CDCFR83DBQ	TI	获取价格	DIRECT RAMBUS CLOCK GENERATOR
CDCH10D48	SUMIDA	获取价格	POWER INDUCTORS
CDCH10D48/A-100KB	SUMIDA	获取价格	General Purpose Inductor, 10uH, 10%, 2 Element, SMD,
CDCH10D48/A-101KB	SUMIDA	获取价格	General Purpose Inductor, 100uH, 10%, 2 Element, SMD,
CDCH10D48/A-101KC	SUMIDA	获取价格	General Purpose Inductor, 100uH, 10%, 2 Element, SMD,
CDCH10D48/A-120KB	SUMIDA	获取价格	General Purpose Inductor, 12uH, 10%, 2 Element, SMD,
CDCH10D48/A-120KC	SUMIDA	获取价格	General Purpose Inductor, 12uH, 10%, 2 Element, SMD,
CDCH10D48/A-151KC	SUMIDA	获取价格	General Purpose Inductor, 150uH, 10%, 2 Element, SMD,
CDCH10D48/A-180KC	SUMIDA	获取价格	General Purpose Inductor, 18uH, 10%, 2 Element, SMD,

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