STV0974 datasheet(4/69 Pages) STMICROELECTRONICS

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STV0974

Overview

The STV0974 is a mobile imaging digital signal processor which, when used with VS6552 CMOS

color VGA image sensor from STMicroelectronics, performs all the required data processing to

deliver good quality Viewfinder, still and live color images. The STV0974 performs high quality color

processing on images, achieving JPEG compression if requested and transfers them to a

baseband through one of the available interfaces.

Data is transferred from sensor to STV0974 through Low Electromagnetic Interference (EMI)

interface, using the sensor data transfer protocol over LVDS.

Data is transferred from STV0974 to Baseband

● through the video output interface. In video mode, the processor streams video data in a format

which closely follows the data format specified in the ITU-R656 standard.

● through the microprocessor Interface. In microprocessor mode, the video data is stored in a

small FIFO before is it pulled out of the asynchronous microprocessor interface by the host

system (with DMA support).

1.1

Viewfinder mode

When connected to microprocessor interface or video output interface, the STV0974 can process

Viewfinder image up to 30 frame/s.

1.2

Still features

When requested by the baseband, the STV0974 captures bayer data from the sensor. Data is then

color processed, down-scaled and/or compressed and sent through video output or microprocessor

interface. In still mode, the first image produced has a guaranteed good exposure and color

balance for single shot capture.

1.3

Live features

When connected to microprocessor interface or video output interface, the STV0974 can process

live video up to 30 frame/s and eventually proceed to down-scaling and compression with on-chip

Motion JPEG. Live mode is intended for capture of video sequences.

STV0974 数据表(PDF) 4 Page - STMicroelectronics