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AN1196

Cypress Semiconductor

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© Cypress Semiconductor Corporation, 2002-2007. The information contained herein is subject  to change without notice. Cypress Semiconductor
Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any
license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or
safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical
components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of
Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress
against all charges. 

This Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide
patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal,
non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for
the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit
as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified
above is prohibited without the express written permission of Cypress.

Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to
make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any
product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or
failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress' product in a life-support systems application implies
that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.

Use may be limited by and subject to the applicable Cypress software license agreement.

November 21, 2002

Document No. 001-43117 Rev. ** 

 7 

References

Cypress, 

CY4611 FX2 USB to ATA/CF Reference Design Kit

,

Cypress Semiconductor, California, 2002.

Cypress, Cypress Semiconductor web site,

www.cypress.com/

, Cypress Semiconductor, California.

USB-IF, 

Universal Serial Bus Specification, Revision 2.0

,

USB Implementers Forum, Oregon, 2000.

USB-IF, 

USB Developers web site

www.usb.org/developers/

,

USB Implementers Forum, Oregon.

Amkor, 

Application Notes for Surface Mount Assembly of 

Amkor's MicroLeadFrame™ (MLF™) Packages

, Amkor 

Technology, Pennsylvania, 2002. URL at the time of this writ-
ing 

www.amkor.com/prodcts/notes_papers/MLF_AppNote_0902.
pdf

Amkor, 

Amkor Technology web site

http://www.amkor.com/

,

Amkor Technology, Pennsylvania.

PCB Standards, Impedance Calculator, pcbstandards.com,
California, 2002. At the time of this writing the URL is

www.pcbstandards.com/downloads/Metric%20Environment/
Calculators/Impedance/Impedance%20Calculator.xls

PCB Standards, 

PCB Standards web site

,

www.pcbstandards.com/

, California.

Howard W. Johnson, 

High-Speed Digital Design: A Hand-

book of Black Magic

, Prentice Hall PTR, New Jersey, 1993,

ISBN 0-13-395724-1.

In March of 2007, Cypress recataloged all of its Application Notes using a new documentation number and revision code. This new documentation 
number and revision code (001-xxxxx, beginning with rev. **), located in the footer of the document, will be used in all subsequent revisions.
EZ-USB FX2 is a trademark of Cypress Semiconductor Corporation. MicroLeadFrame and MLF are trademarks of Amkor Technology. All other 
trademarks or registered trademarks referenced herein are the property of their respective owners.

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Summary of Contents for EZ-USB FX2 PCB

Page 1: ...on 38 08012 This package is comparable to the Amkor MicroLeadFrame package It is a plastic encapsulated near chip scale pack age using solder lands instead of leads or balls It uses a cop per leadfram...

Page 2: ...s relative to the product enclosure deployed environment and regulatory statutes This application note does not give spe cific recommendations regarding EMI but only gives general EMI and ESD The CY7C...

Page 3: ...pedance but must also be applicable in a practical physical design For instance different fabrication processes may have limited choices for material dielectric constant and material thickness between...

Page 4: ...connector route over the signal ground plane never over the shield safety ground No signal should route over the shield safety ground plane No other power or signal ground planes should overlap the sh...

Page 5: ...area indicates absence of solder mask Figure 7 Solder Mask The signal ground plane provides the major area for thermal dissipation The CY4611 uses the large internal layer of the PCB devoted to signa...

Page 6: ...encil could have fewer holes but they would need to be larger and may not meet the mini mum 50 coverage requirement A large pattern of four squares could also be used However the larger the opening of...

Page 7: ...ght to make changes without further notice to the materials described herein Cypress does not assume any liability arising out of the application or use of any product or circuit described herein Cypr...

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