December 7, 1999

Version 1.4

5

OV7910P/OV7410P/OV7411P

SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS

Preliminary

1.1

Video Standards

Two TV standards are implemented and available as

output in the OV7910P/OV7410P/OV7411P imaging

devices: PAL (B). Table 2 below shows how to config-

ure the standard of choice. Please note

that the accuracy and stability of the crystal clock fre-

quency is important to avoid unwanted color shift in TV/

video systems.

1.2

Video Formats

The

OV7910P/OV7410P/OV7411P

image

sensors

support a variety of formats including Composite

(CVBS), S-Video (YO/CO), RGB components, YUV

components, and B/W. Composite and S-Video signals

are generated from the internal TV encoder and the

RGB/YUV/BW outputs are generated from the color

matrix prior to entering the encoder.

The image sensor utilizes the RG/BG Bayer pattern

sending raw pixel data through the color matrix, creat-

ing RGB or YUV component signals. At the same time,

YUV signals are also processed to generate both com-

posite and S-Video signals. (Note: Color format config-

uration is valid only for the OV7910P image sensor)

1.2.1

Composite and S-Video

The Composite/S-Video format is the power-up default

Table 2. Standard Configuration

Standard

PAL

(pin 24)

Clock

Comments

PAL

1

17.734475 MHz

clock in = 4 x Fsc

configuration for the OV7910P/OV7410P/OV7411P

image sensors. Pins AMOD0/AMOD1 (pins 38 and 39)

select composite and S-Video formats. In this configu-

ration, RVCVO (pin 17) outputs CVBS, GYYO (pin 16)

outputs

the YO component of the S-Video signal, and BUCO

(pin 15) outputs the CO component. Table 3 below

summarizes the formats available and the settings

required on the appropriate pins.

1.2.2

RGB

Setting AMOD0 = 1 (w/AMOD1 = x) selects the RGB

format. In this configuration, RVCVO outputs the

Red component, GYYO outputs the Green component,

and BUCO provides the Blue component.

1.2.3

YUV

Setting AMOD0=0 and AMOD1=1 configures the

OV7910P/OV7410P/OV7411P sensors to operate in

YUV or B/W mode. In this configuration, GYYO outputs

the Y component, RVCVO provides the Cr component,

and BUCO outputs the Cb component. On the

OV7410P image sensor, only the GYYO (Y compo-

nent) output is valid.

1.

Functional Description

(Note: All references to color functions apply only to OV7910P image sensor)