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CDCR61APW Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce CDCR61APW
Description  DIRECT RAMBUSE CLOCK GENERATOR- LITE
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

CDCR61APW Fiches technique(HTML) 1 Page - Texas Instruments

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CDCR61A
DIRECT RAMBUS
™ CLOCK GENERATOR – LITE
SCAS626 – FEBRUARY 2000
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D 400-MHz Differential Clock Source for
Direct Rambus Memory Systems for an
800-MHz Data Transfer Rate
D Operates From Two (3.3-V and 1.80-V)
Power Supplies With 180 mW (Typ) at 400
MHz Total
D Packaged in a Thin Shrink Small-Outline
Package (PW)
D 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
/2
OSC
PLL
BUSCLK
LCLK
2
S0
XTAL
XOUT
XIN
S1
S2
DIV
VDDP
BUSCLK FREQUENCY SETTINGS
S0
M (PLL MULTIPLIER)
0
16
1 or Open
64/3
FUNCTION TABLE
VDDP
S1
S2
MODE
CLK
CLKB
LCLK
ON
0
0
Normal
CLK
CLKB
XIN divided by 2
ON
1
1
Normal
CLK
CLKB
XIN divided by 2
ON
0
1
Test
Divided by 2
Divided by 2
XIN divided by 2
ON
1
0
Test
Divided by 4
Divided by 4
XIN divided by 2
0 V
0
0
Test
XIN
XIN (invert)
XIN divided by 2
0 V
1
1
Test
XIN
XIN (invert)
XIN divided by 2
0 V
0
1
Test
XIN divided by 2
XIN (invert) divided by 2
XIN divided by 2
0 V
1
0
Test
XIN divided by 4
XIN (invert) divided by 4
XIN divided by 2
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.
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.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VDDP
GNDP
XOUT
XIN
VDDL
LCLK
GNDL
S1
S0
VDD
GND
CLK
CLKB
GND
VDD
S2
PW PACKAGE
(TOP VIEW)


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