CDCR61A

更新时间： 2024-09-14 22:40:11

品牌	Logo	应用领域
德州仪器 - TI		电机时钟
页数	文件大小	规格书
10页	139K
描述
DIRECT RAMBUSE CLOCK GENERATOR- LITE

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CDCR61A 数据手册

CDCR61A

DIRECT RAMBUS CLOCK GENERATOR – LITE

SCAS626 – FEBRUARY 2000

PW PACKAGE

(TOP VIEW)

400-MHz Differential Clock Source for

Direct Rambus Memory Systems for an

800-MHz Data Transfer Rate

DDP

Operates From Two (3.3-V and 1.80-V)

Power Supplies With 180 mW (Typ) at 400

MHz Total

GNDP

XOUT

XIN

GND

CLK

CLKB

GND

Packaged in a Thin Shrink Small-Outline

Package (PW)

DDL

LCLK

GNDL

External Crystal Required for Input

description

The Direct Rambus clock generator – lite (DRCG-Lite) is an independent crystal clock generator. It performs

clock multiplication using PLL, sourced by an internal crystal oscillator. It provides one differential, high-speed

Rambus channel compatible output pair. Also, one single-ended output is available to deliver 1/2 of the crystal

frequency. The Rambus channel operates at up to 400 MHz with an option to select 300 MHz as well. The

desired crystal is a 18.75-MHz crystal in a series resonance fundamental application.

The CDCR61A is characterized for operation over free-air temperatures of 0°C to 85°C.

functional block diagram

DDP

S1 S2

DIV

XTAL

OSC

PLL

XIN

BUSCLK

LCLK

XOUT

BUSCLK FREQUENCY SETTINGS

M (PLL MULTIPLIER)

1 or Open

64/3

FUNCTION TABLE

MODE

Normal

Test

CLK

CLKB

LCLK

DDP

XIN divided by 2

0 V

CLK

CLKB

Divided by 2

Divided by 4

XIN

Divided by 2

Divided by 4

XIN (invert)

Test

XIN

XIN (invert)

Test

XIN divided by 2

XIN divided by 4

XIN (invert) divided by 2

XIN (invert) divided by 4

Test

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 and Rambus are trademarks of Rambus Inc.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...10

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