VS6663CD datasheet(9/64 Pages) STMICROELECTRONICS

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VS6663CD

Overview

The module's main function is to convert the viewed scene into a data stream. The

companion processor’s function is to manage the sensor included in the module in order to

produce the best possible pictures given the module's optics and the scene itself. The

companion processor processes the data stream into a form which is easily handled by up

stream mobile baseband or multimedia processor (MMP) chipsets.

The sensor supplies high-speed clock signal to the coprocessor and provides the

embedded control sequences which allow the coprocessor to synchronize with the frame

and line level timings. The coprocessor then performs the color processing on the raw

image data from the sensor before supplying the final image data to the host.

In a coprocessor architecture, a low speed clock (external clock) is sent by the host to both

the VS6663CD and the coprocessor. This is used by the sensor in all phases of operation

and by the coprocessor during the initial stages of system boot up.

During streaming phase, the VS6663CD supplies the high-speed data qualification clock for

the coprocessor. The high-speed clock is generated using the VS6663CD embedded PLL

and is provided as the continuous data qualification clock.

1.2

VS6663CD use in a system with software image processing

The VS6663CD image sensor can also be directly connected to a baseband or multimedia

processor. No dedicated coprocessor is used in this configuration. The image processing is

done in software within the baseband processor.

Figure 3. VS6663CD in a system with software image processing

Pixel

array

Col ADC

Power

Video timing

Dig filters

Dark cal

CCI

Test ctrl

Sys ctrl

Clk mngt

PLL

VS6663CD

Mobile

baseband

processor

XSHUTDOWN

EXTCLK

CCP2 / CSI-2

Output data I/F

4 Ch AV

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