Omnivision OV7670 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 ision
®
OV7670/OV7171 EAA Prototyping Module
Quick Start Guide
Last Modified: 22 June 2006
Document Version: 1.1
Revision Number Date Revision
1.0 10/14/05 Initial Release
1.1 06/22/06 Changed Revision numbers listed on page 6.

2Proprietary to OmniVision Technologies Version 1.1, June 22, 2006
OV7670/OV7171 EAA Prototyping Module Omni ision
00Table of Contents
Section 1, Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
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
1.5.1 Electrostatic Discharge Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Section 2, Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 What You Get With Your Prototyping Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Section 3, Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 System Design Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Module Schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Version 1.1, June 22, 2006 Proprietary to OmniVision Technologies 3
Omni ision
00List of Figures
Figure 2-1 OV7670/OV7171 EAA Prototyping Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3-1 OV7670/OV7171 EAA Prototyping Module Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4Proprietary to OmniVision Technologies Version 1.1, June 22, 2006
OV7670/OV7171 EAA Prototyping Module Omni ision
1 Introduction
The primary objective of this document is to provide a description of the contents, setup, and
operation of the OV7670/OV7171 EAA Prototyping 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 the OV7670/OV7171, refer to the following documents:
• OV7670/OV7171 Datasheet
• OmniVision Serial Camera Control Bus (SCCB) Functional Specification
• OmniVision Assembly Guidelines Technical Bulletin
1.3 Customer Support
IfyouhaveanyquestionsaboutusinganyoftheOmniVisionCAMERACHIPTM 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]
– [email protected]
– salesT[email protected]
•General Information — OmniVision Technologies has an online mailbox at [email protected]
that will forward your inquiry to the appropriate OmniVision representative.

Introduction
Version 1.1, June 22, 2006 Proprietary to OmniVision Technologies 5
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1.5 Safety Information
The equipment is designed and manufactured in compliance with several safety standards.
However,thefollowingprecautionsshouldbeobservedtoensurepersonal safetyduringinstallation
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 OV7670/OV7171 EAA Prototyping Module contains components that could be damaged by
electrostatic discharge. When handling the boards, wear a properly grounded wrist strapto prevent
possible damage, or follow other suitable precautions to prevent equipment damage.

6Proprietary to OmniVision Technologies Version 1.1, June 22, 2006
OV7670/OV7171 EAA Prototyping Module Omni ision
2 Getting Started
2.1 What You Get With Your Prototyping Kit
Your OV7670/OV7171 EAA Prototyping Module kit should contain the following items (see
Figure 2-1):
• OV7670/OV7171 EAA Prototyping Module
• Documentation CD-ROM
– OV7670_DS (1.3) - OV7670/OV7171 Datasheet
– OV7670_QSG (1.1)AA - OV7670/OV7171 EAA Prototyping Module Quick Start Guide
– SCCBSpec_AN (2.1) - OmniVision Serial Camera Control Bus (SCCB) Functional Specification
– AssyGuidelines_TB (1.1) - OmniVision Assembly Guidelines Technical Bulletin
Figure 2-1 OV7670/OV7171 EAA Prototyping Module

Product Description
Version 1.1, June 22, 2006 Proprietary to OmniVision Technologies 7
Omni ision
3 Product Description
3.1 Overview
OmniVision Technologies Inc. supplies prototyping and evaluation modules to demonstrate
operation of the associated CAMERACHIP products, as well as to demonstrate associated
companion back-end system ASICs, where required.
The OV7670/OV7171 EAA Prototyping Module is intended for general design-in and evaluation
purposes. The module provides a simple 32-pin header-connector interface to the relevant I/O and
control registers of the OV7670/OV7171 CAMERACHIP. The module includes the necessary 24 Mhz
crystal, capacitors, and resistors.
The OV7670/OV7171 EAA Prototyping Module can be directly connected to any companion
back-end ASIC solution or system interface. The header-connector interface allows for access to
the 10-bit digital output data, PCLK, vertical sync, and horizontal sync signals. The back-end
interface can use the Serial Camera Control Bus (SCCB) interface software to adjust the control
register values.
3.2 System Design Considerations
There are several implementation tips to consider for achieving the best results with the
CAMERACHIP:
• Be certain to provide a clean power source to the CAMERACHIP, especially the AVDD and
SVDD power pins.
• The CAMERACHIP may be adversely affected by transient heat produced by associated
components on the PCB. Avoid placement of heat-producing components on the PCB directly
adjacent to or on the back-side of the CAMERACHIP. This will limit heat transfer to the
CAMERACHIP and reduce the possibility of a poor image and failed components.
• To minimize the resistance and inductance of the PCB traces, be certain to design the PCB
with the coupling bypass capacitors as close as possible to the CAMERACHIP power pin(s).
• To avoid ground-plane noise issues, use a separate PCB trace for the AGND and the DGND
pins. Connect the two ground traces at a single point to the system ground.
• Orient the CAMERACHIP on the PCB with pin 1 down when facing the chip. This application will
result in normal image attributes (i.e., right-side up images).
3.3 Module Schematic
Refer to Figure 3-1 for the PCB schematic for the OV7670/OV7171 EAA Prototyping Module. This
schematic is provided to assist the development engineer with incorporating the OV7670/OV7171
CAMERACHIP into product designs. The schematic also includes the header-connector pin interface
information of the OV7670/OV7171 EAA Prototyping Module for easy system integration and
CAMERACHIP evaluation.

8Proprietary to OmniVision Technologies Version 1.1, June 22, 2006
OV7670/OV7171 EAA Prototyping Module Omni ision
Figure 3-1 OV7670/OV7171 EAA Prototyping Module Schematic
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
OV7670CSP2 AA MODULE 1.0 OV7670CSP2
A
11Wednesday, March 09, 2005
OmniVision Technologies, Inc.
Title Size Document Number Rev Date: Sheet of
SIO_C
HREF
D1
PCLK
VSYNC
D2
D0
D5
D7
D4
XCLK
D3
RESET1
RESET
V25
SIO_D
AGND
D6
PWDN1
DGND
PWDN
D0 D1 D2 D3 D4 D5 D6 D7 VSYNC HREF PCLK STRB
XCLK RESET PWDN
SIO_D SIO_C
DGND
DGND
PGND
AGND
DGND
PGND
AGND
V25
V25
DOVDD
AVDD
DVDD
DVDD
DOVDD
AVDD
U2 XC62FP1802
2
3
1
VIN
VOUT
DGND
J1
CON32A
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
C7 0.1uF-0603
C8 10uF/6V
C5
0.1uF-0603
R5 0-0603
R4
10-0603
R2
10-0603
U1
OV7670
A1 A2 A3
A4 A5
B1 B2 B3
B4 B5
C1 C2
D1 D2 E1 E2
E3
E4 E5
F1 F2 F3
F4 F5
AVDD SDA SCL
D1 D3
PWDN VREF2 AGND
D0 D2
DVDD
VREF1
VSYNC
HREF
PCLK
STROBE
XCLK
D7 D5
DOVDD RESET DOGND
D6 D4
C6 1uF-0603 L3 3.3uH
L1 3.3uH L2 3.3uH
C10 1uF-0603
C2 10uF/6V C4
10uF-6V
C9
0.1uF-0603
C1
0.1uF-0603
TP1
1
C3 0.1uF-0603

Product Description
Version 1.1, June 22, 2006 Proprietary to OmniVision Technologies 9
Omni ision
Note:
• All information shown herein is current as of the revision and publication date. Please refer
to the OmniVision web site (http://www.ovt.com) to obtain the current versions of all
documentation.
• OmniVision Technologies, Inc. reserves the right to make changes to their products or to
discontinue any product or service without further notice (It is advisable to obtain current product
documentation prior to placing orders).
• Reproduction of information in OmniVision product documentation and specifications is
permissible only if reproduction is without alteration and is accompanied by all associated
warranties, conditions, limitations and notices. In such cases, OmniVision is not responsible
or liable for any information reproduced.
• This document is provided with no warranties whatsoever, including any warranty of
merchantability, non-infringement, fitness for any particular purpose, or any warranty
otherwise arising out of any proposal, specification or sample. Furthermore, OmniVision
Technologies Inc. disclaims all liability, including liability for infringement of any proprietary
rights, relating to use of information in this document. No license, expressed or implied, by
estoppels or otherwise, to any intellectual property rights is granted herein.
• ‘OmniVision’ and the OmniVision logo are registered trademarks of OmniVision Technologies, Inc.
‘CameraChip’ is a trademark of OmniVision Technologies, Inc. All other trade, product or service
names referenced in this release may be trademarks or registered trademarks of their respective
holders. Third-party brands, names, and trademarks are the property of their respective owners.
For further information, please feel free to contact OmniVision at [email protected].
OmniVision Technologies, Inc.
1341 Orleans Drive
Sunnyvale, CA USA
[phone]

10 Proprietary to OmniVision Technologies Version 1.1, June 22, 2006
OV7670/OV7171 EAA Prototyping Module Omni ision

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