Omnivision OV7640 User manual

This document is provided "as is" with no warranties whatsoever, including any warranty of merchantability, non-in-
fringement, fitness for any particular purpose, or any warranty otherwise arising out of any proposal, specification, or
sample.
OmniVision Technologies, Inc. disclaims all liability, including liability for infringement of any proprietary
rights, relating to the use of information in this document. No license, expressed or implied, by estoppel
or otherwise, to any intellectual property rights is granted herein.
* Third-party brands, names, and trademarks are the property of their respective owners.
Note:
The information contained in this document is considered proprietary to OmniVision Technologies, Inc. This
information may be distributed only to individuals or organizations authorized by OmniVision Technologies, Inc. to
receive said information. Individuals and/or organizations are not allowed to re-distribute said information
APPLICATION NOTE
O
mni
TM
ision
OV7640/OV7141 CX Evaluation Module
Quick Start Guide
Last Modified: 2 December 2003
Document Version: 1.4
Revision Number Date Revision
1.0 05/22/03 Initial Release
1.1 09/12/03 Changed the document revision numbers listed on page 6.
1.2 10/28/03 Changed the document revision numbers listed on page 6.
1.3 12/02/03 Added Assembly Guidelines document to list of documents on page 4 and
page 6.
1.4 12/17/03 Added note on page 11 requiring Service Pack 4.

2Proprietary to OmniVision Technologies Version 1.4, December 17, 2003
OV7640/OV7141 CX Evaluation Module Omni ision
00Table of Contents
Section 1, Introduction
1.1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Sales and Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Section 2, Getting Started
2.1 System Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 What You Get With Your Evaluation Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Installing the Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Uninstalling an Existing Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Section 3, Troubleshooting Your Setup
Section 4, Using AMCAP and OVTDTool
Section 5, Product Description
5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2 System Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.3 Module Schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Version 1.4, December 17, 2003 Proprietary to OmniVision Technologies 3
Omni ision
00List of Figures
Figure 2-1 OV7640/OV7141 CX Evaluation Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5-1 OV7640/OV7141 AA Prototyping Module Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4Proprietary to OmniVision Technologies Version 1.4, December 17, 2003
OV7640/OV7141 CX Evaluation Module Omni ision
1 Introduction
The primary objective of this document is to provide a description of the contents, setup, and
operation of the OV7640/OV7141 CX Evaluation Module.
1.1 Intended Audience
This manual is intended for developers who want a convenient way to begin system development.
It is assumed that the reader has a basic understanding of digital video and still capturing concepts.
1.2 Related Publications
For more information about using OV7640/OV7141, refer to the following documents:
•OV7640/OV7141 Datasheet
•OV7640/OV7141 Implementation Guide
•OmniVision Serial Camera Control Bus (SCCB) Functional Specification
•OmniVision Assembly Guidelines Technical Bulletin
1.3 Customer Support
If you have any questions about using any of the OmniVision CAMERACHIPTM family of products, first
consult this document and the documents listed in Section 1.2, Related Publications. If you still
have questions regarding the setup and operation of this evaluation product, contact OmniVision
Technologies using the contact information below:
•Customer and Technical E-mail Support — OmniVision Technologies provides an online
mailbox at [email protected] and [email protected] for USB software support. Your message will
automatically be forwarded to the appropriate technical support engineers at OmniVision
Technologies.
1.4 Sales and Ordering Information
Contact the following departments at OmniVision Technologies for sales, ordering and general
information:
•Sales Information — OmniVision Technologies has mailboxes that will forward your inquiry to
the appropriate OmniVision sales representative.
– [email protected]
– [email protected]
– [email protected]m
– [email protected]
– salesT[email protected]
•General Information — OmniVision Technologies has an online mailbox at [e-mail]
that will forward your inquiry to the appropriate OmniVision representative.

Introduction
Version 1.4, December 17, 2003 Proprietary to OmniVision Technologies 5
Omni ision
1.5 Safety Information
The equipment is designed and manufactured in compliance with several safety standards.
However, the following precautions should be observed to ensure personal safety during installation
or service, and to prevent damage to the equipment or the equipment to be connected.
Read and follow all warning notices and instructions marked on the product.
1.5.1 Electrostatic Discharge Prevention
The OV7640/OV7141 CX Evaluation Module contains components that could be damaged by
electrostatic discharge. When handling the boards, wear a properly grounded wrist strap to prevent
possible damage, or follow other suitable precautions to prevent equipment damage.

6Proprietary to OmniVision Technologies Version 1.4, December 17, 2003
OV7640/OV7141 CX Evaluation Module Omni ision
2 Getting Started
This section provides information to get the OV7640/OV7141 CX Evaluation Module up and
running.
2.1 System Requirements
The following items are required in order to use the OV7640/OV7141 CX Evaluation Module:
• PC running Win98/Win2000/Windows XP
• CD-ROM drive
• USB 2.0 port
• Adobe Acrobat Reader
2.2 What You Get With Your Evaluation Kit
Your OV7640/OV7141 CX Evaluation Module kit should contain the following items (see
Figure 2-1):
• OV7640/OV7141 CX Evaluation Module
• USB Cable
• USB 2.0 Drivers & Documentation CD-ROM
The Drivers and Documentation CD-ROM contains:
• Drivers (USB 2.0 drivers)
• Documentation
– OV7640_DS (1.7) - OV7640/OV7141 Datasheet
– OV7640_QSG (1.4)CX - OV7640/OV7141 CX Evaluation Module Quick Start Guide
– OV7640_IG (1.2) - OV7640/OV7141 Implementation Guide
– SCCBSpec_AN (2.1) - OmniVision Serial Camera Control Bus (SCCB) Functional Specification
– AssyGuidelines_TB (1.0) - OmniVision Assembly Guidelines Technical Bulletin
• Utilities
– OVTDTool.exe - OmniVision IC debug tool
– AMCAP.exe - Video capture utility
Figure 2-1 OV7640/OV7141 CX Evaluation Module

Getting Started
Version 1.4, December 17, 2003 Proprietary to OmniVision Technologies 7
Omni ision
2.3 Installing the Evaluation Module
For Windows XP
1. Disconnect the system from the internet.
2. Connect the OV7640/OV7141 CX Evaluation Module to the system’s USB 2.0 port.
3. A Found New Hardware message will appear in the lower right corner of the screen.
4. When the Found New Hardware Wizard window appears, insert the Drivers and
Documentation CD into the CD-ROM drive.
5. In the Found New Hardware Wizard window, select Install from a list or a specific location
(Advanced) and then, click on Next.

8Proprietary to OmniVision Technologies Version 1.4, December 17, 2003
OV7640/OV7141 CX Evaluation Module Omni ision
6. When the system asks for search and installation options, select Don’t search. I will choose
the driver to install and then click on Next.
7. When the system asks you to select the device driver to install, highlight OmniVision
SuperCam and click on Have Disk....
8. When the Install from Disk window appears, click on Browse....
9. A Locate File window will appear. Navigate to the CD-ROM drive that holds the Drivers and
Documentation CD and select the Drivers folder.
10.Select the OVUSB2.INF file and then, click on Open.

Getting Started
Version 1.4, December 17, 2003 Proprietary to OmniVision Technologies 9
Omni ision
11. In the Install from Disk window, click on OK.
12.In the Found New Hardware Wizard window (see screen under step 7), click on Next.
13.The system will begin copying the drivers to your system. When the following warning message
appears, click on Continue Anyway.
14.When the system is finished copying the driver files, the following window will appear. Click on
Finish to complete the installation.
15.When the driver installation is complete, a message indicating the OV7640/OV7141 CX
Evaluation Module is ready to use will appear in the bottom right corner of the screen.

10 Proprietary to OmniVision Technologies Version 1.4, December 17, 2003
OV7640/OV7141 CX Evaluation Module Omni ision
For Windows 2000
1. Disconnect the system from the internet.
2. Connect the OV7640/OV7141 CX Evaluation Module to the system’s USB 2.0 port.
3. A Found New Hardware message box will appear.
4. When the Found New Hardware Wizard window appears, click on Next.
5. When the system asks to locate the driver files, click on Search for a suitable driver for my
device (Recommended) and then, click on Next.
Note: Service Pack 4 for Windows 2000 is required in order for the
drivers and evaluation module to work properly.