VX6953CB datasheet(13/107 Pages) STMICROELECTRONICS

13 / 107 page

8209023 Rev 5

13/107

VX6953CB

Overview

The sensor main function is to convert the viewed scene into a data stream. The companion

processor function is to manage the sensor so that it can produce the best possible pictures

and to process the data stream into a form which is easily handled by up-stream mobile

baseband or multi-media processor (MMP) chipsets.

The sensor supplies high-speed clock signals to the processor and provides the embedded

control sequences which allow the coprocessor to synchronize with the frame and line level

timings. The processor then performs the color processing on the raw image data from the

sensor before supplying the final image data to the host.

With the coprocessor system, the clock is sent by host to both the VX6953CB and the

coprocessor. The high-speed clock for the coprocessor is supplied from the VX6953CB. It is

generated using the VX6953CB PLL and is provided as the continuous data qualification

clock.

1.2

VX6953CB use in a system with software image processing

The VX6953CB image sensor can be directly connected to a baseband or multimedia

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

done in software or hardware within the baseband processor.

Figure 2. VX6953CB in a system with software image processing

Systems with a CCP 2.0 interface can operate with this device, however they may have a

maximum CCP link speed of 650 Mbps and therefore will not be able to achieve 15 fps with

this device.

Systems with CSI-2 interface (MIPI) can operate with this sensor. With a 800 Mbps CSI-2

link speed, they can achieve 15 fps in full size image.

Mobile

baseband

processor

XSHUTDOWN

EXTCLK

SMIA

CCI

CCP

VX6953CB

imaging

processes

CCI

CCP2 TX

Pixel array and

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