ICS650R-21I

ICS650R-21I Datasheet

ICS650-21

Part	Datasheet
ICS650R-21I	ICS650R-21I (pdf)

Related Parts	Information
ICS650R-21	ICS650R-21
ICS650R-21IT	ICS650R-21IT
ICS650R-21T	ICS650R-21T

PDF Datasheet Preview
SYSTEM PERIPHERAL CLOCK SOURCE DATASHEET ICS650-21 The ICS650-21 is a low cost, low-jitter, high-performance clock synthesizer for system peripheral applications. Using analog/digital Phase Locked Loop PLL techniques, the device accepts a parallel resonant 25 MHz crystal input to produce up to eight output clocks. The device provides clocks for PCI, SCSI, Fast Ethernet, Ethernet, USB, and AC97. The user can select one of three USB frequencies and also one of two AC97 audio frequencies. The OE pin puts all outputs into a high-impedance state for board level testing. All frequencies are generated with less than one ppm error, meeting the demands of SCSI and Ethernet clocking. Block Diagram • Packaged in 20-pin SSOP QSOP • Available in Pb lead free package • Lower jitter version of ICS650-01 • Operating voltage of V or 5 V • Zero ppm synthesis error in all clocks • Inexpensive 25 MHz crystal or clock input • Provides Ethernet and Fast Ethernet clocks • Provides SCSI clocks • Provides PCI clocks • Selectable AC97 audio clock • Selectable USB clock • OE pin tri-states the outputs for testing • Selectable frequencies on three clocks • Duty cycle of 45/55 for Processor clock and Audio clock • Advanced, low-power CMOS process • Industrial temperature range available NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 2 PSEL1:0 ASEL USEL X1/ICLK 25 MHz Crystal or Clock Crystal O scillator Optional crystal capacitors VDD 3 Clock Synthesis Circuitry Processor Clocks Audio Clock USB Clock 20 MHz 25 MHz 2 GND OE all outputs IDT / ICS SYSTEM PERIPHERAL CLOCK SOURCE ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE CLOCK SYNTHESIZER Pin Assignment Processor Clock MHz USEL X1/ICLK UCLK ACLK PSEL1 PSEL0 PCLK2 PCLK3 ASEL OFF/14.318M PCLK1 20-pin 150 mil SSOP USB Clock MHz USEL 0 M 1 UCLK 12 24 48 Pin Descriptions Ordering Information Symbol A A1 A2 b C D E E1 e L α Basic Basic For reference only. Controlling dimensions in mm. c -C- SEATING PLANE L Part / Order Number 650R-21 650R-21T* 650R-21LF 650R-21LFT 650R-21I* 650R-21IT* 650R-21ILF 650R-21ILFT Marking ICS650R-21 ICS650R-21 ICS650R-21L ICS650R-21L ICS650R-21I ICS650R-21I 650R-21ILF 650R-21ILF Shipping Packaging Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel Package 20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP Temperature 0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C -40 to 85° C -40 to 85° C -40 to 85° C -40 to 85° C *NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology IDT assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT / ICS SYSTEM PERIPHERAL CLOCK SOURCE ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE Originator P. Griffith Date Description of Change 02/15/06 Added “Power-up Time” spec in AC chars. 11/04/09 Added EOL note for non-green parts. CLOCK SYNTHESIZER IDT / ICS SYSTEM PERIPHERAL CLOCK SOURCE ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE CLOCK SYNTHESIZER Innovate with IDT and accelerate your future networks. Contact: For Sales 800-345-7015 408-284-8200 Fax 408-284-2775 For Tech Support Corporate Headquarters Integrated Device Technology, Inc. 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

PDF Datasheet Preview

SYSTEM PERIPHERAL CLOCK SOURCE

DATASHEET

ICS650-21

The ICS650-21 is a low cost, low-jitter, high-performance clock synthesizer for system peripheral applications. Using analog/digital Phase Locked Loop PLL techniques, the device accepts a parallel resonant 25 MHz crystal input to produce up to eight output clocks. The device provides clocks for PCI, SCSI, Fast Ethernet, Ethernet, USB, and AC97. The user can select one of three USB frequencies and also one of two AC97 audio frequencies. The OE pin puts all outputs into a high-impedance state for board level testing. All frequencies are generated with less than one ppm error, meeting the demands of SCSI and Ethernet clocking.

Block Diagram
• Packaged in 20-pin SSOP QSOP
• Available in Pb lead free package
• Lower jitter version of ICS650-01
• Operating voltage of V or 5 V
• Zero ppm synthesis error in all clocks
• Inexpensive 25 MHz crystal or clock input
• Provides Ethernet and Fast Ethernet clocks
• Provides SCSI clocks
• Provides PCI clocks
• Selectable AC97 audio clock
• Selectable USB clock
• OE pin tri-states the outputs for testing
• Selectable frequencies on three clocks
• Duty cycle of 45/55 for Processor clock and Audio clock
• Advanced, low-power CMOS process
• Industrial temperature range available

NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01
2 PSEL1:0 ASEL USEL

X1/ICLK
25 MHz Crystal or Clock

Crystal O scillator

Optional crystal capacitors

VDD 3

Clock Synthesis Circuitry

Processor

Clocks

Audio Clock

USB Clock 20 MHz 25 MHz
2 GND

OE all outputs

IDT / ICS SYSTEM PERIPHERAL CLOCK SOURCE

ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE

CLOCK SYNTHESIZER

Pin Assignment

Processor Clock MHz

USEL

X1/ICLK

UCLK

ACLK

PSEL1

PSEL0

PCLK2

PCLK3

ASEL

OFF/14.318M

PCLK1
20-pin 150 mil SSOP

USB Clock MHz

USEL 0 M 1

UCLK 12 24 48

Pin Descriptions
Ordering Information

Symbol A A1 A2 b C D E E1 e L α

Basic

Basic
*For reference only. Controlling dimensions in mm.
c -C-

SEATING

PLANE L

Part / Order Number
650R-21* 650R-21T* 650R-21LF 650R-21LFT 650R-21I* 650R-21IT* 650R-21ILF 650R-21ILFT

Marking

ICS650R-21 ICS650R-21 ICS650R-21L ICS650R-21L ICS650R-21I ICS650R-21I 650R-21ILF 650R-21ILF

Shipping Packaging

Tubes Tape and Reel

Tubes Tape and Reel

Tubes Tape and Reel

Tubes Tape and Reel

Package
20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP 20-pin SSOP

Temperature
0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C -40 to 85° C -40 to 85° C -40 to 85° C -40 to 85° C
*NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant.

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology IDT assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.

IDT / ICS SYSTEM PERIPHERAL CLOCK SOURCE

ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE

Originator P. Griffith

Date Description of Change 02/15/06 Added “Power-up Time” spec in AC chars. 11/04/09 Added EOL note for non-green parts.

CLOCK SYNTHESIZER

IDT / ICS SYSTEM PERIPHERAL CLOCK SOURCE

ICS650-21 SYSTEM PERIPHERAL CLOCK SOURCE

CLOCK SYNTHESIZER

Innovate with IDT and accelerate your future networks. Contact:

For Sales
800-345-7015 408-284-8200 Fax 408-284-2775

For Tech Support

Corporate Headquarters

Integrated Device Technology, Inc.
2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ICS650R-21I Datasheet file may be downloaded here without warranties.

Datasheet ID: ICS650R-21I 637037