2

Proprietary to OmniVision Technologies

Version 1.3, January 15, 2003

OV7640/OV7140

CMOS VGA (640 x 480) CAMERACHIP™

Omni ision

Functional Description

Figure 2 shows the functional block diagram of the OV7640/OV7140 image sensor. The OV7640/OV7140 includes:

•

Image Sensor Array (640 x 480 resolution)

•

Timing Generator

•

Analog Processing Block

•

A/D Converters

•

Output Formatter

•

Digital Video Port

•

SCCB Interface

Figure 2 OV7640/OV7140 Functional Block Diagram

Output

Formatter

Column Sense Amps

Timing Generator

MUX

MUX

R

G

B

Y

Cb

Cr

VSYNC

PCLK

HREF

CLK

SIO_D

SIO_C

RESET

PWDN

Analog Processing

Windowing

SCCB

Interface

Control

Registers

(To all circuits)

VREF

1.0 µf

Y[7:0]

Digital Video

Port

A/D

A/D

Gain

WB

Gamma

Saturation

Hue

Brightness

Data

Formatting

Image Array

(640 x 480)