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CDCR61A PDF预览

CDCR61A

更新时间： 2024-11-17 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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中文翻译

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CDCR61A 数据手册

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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  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
V
S0  
DDP  
Operates From Two (3.3-V and 1.80-V)  
Power Supplies With 180 mW (Typ) at 400  
MHz Total  
GNDP  
XOUT  
XIN  
V
DD  
GND  
CLK  
CLKB  
GND  
V
Packaged in a Thin Shrink Small-Outline  
Package (PW)  
DDL  
LCLK  
GNDL  
S1  
V
DD  
External Crystal Required for Input  
S2  
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  
S0  
V
DDP  
S1 S2  
DIV  
XTAL  
OSC  
PLL  
2
XIN  
BUSCLK  
LCLK  
XOUT  
/2  
BUSCLK FREQUENCY SETTINGS  
S0  
0
M (PLL MULTIPLIER)  
16  
1 or Open  
64/3  
FUNCTION TABLE  
V
S1  
S2  
0
MODE  
Normal  
Normal  
Test  
CLK  
CLK  
CLKB  
CLKB  
LCLK  
DDP  
ON  
0
1
0
1
0
1
0
1
XIN divided by 2  
XIN divided by 2  
XIN divided by 2  
XIN divided by 2  
XIN divided by 2  
XIN divided by 2  
XIN divided by 2  
XIN divided by 2  
ON  
ON  
ON  
0 V  
0 V  
0 V  
0 V  
1
CLK  
CLKB  
1
Divided by 2  
Divided by 4  
XIN  
Divided by 2  
Divided by 4  
XIN (invert)  
0
Test  
0
Test  
1
Test  
XIN  
XIN (invert)  
1
Test  
XIN divided by 2  
XIN divided by 4  
XIN (invert) divided by 2  
XIN (invert) divided by 4  
0
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.  
Copyright 2000, Texas Instruments Incorporated  
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.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...10

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