What is specific definition of HREF, PCLK, VSYNC?

[smartcode]

Hello,

I read datasheet of OV6620 carefully for finding exact meaning of HREF, PCLK, VSYNC. but I couldn't understand what are they doing while capturing image. What are they doing and how to control them?

I'm trying to capture 8-bit RGB raw data image.

thanks.

[johno]

VSYNC is a digital output from the OV6620 that indicates when a new image is about to start being sent out on the pixel data busses.

HREF is a digital output from the OV6620 that indicates when a new line is about to start being sent out on the pixel data busses.

PCLK is a digital output pixel clock signal that indicates when there is valid pixel data on the pixel data busses.

These three signals are typical for almost any digital CMOS image sensor.