STV0974 datasheet(9/69 Pages) STMICROELECTRONICS

9 / 69 page

Functional description

STV0974

9/61

4.2

Sensor interface

4.2.1

Features

● Low electromagnetic interference (EMI) interface with CMOS image sensors

● High speed serial receiver, with data and clock inputs

● Up to 120 Mbit/s operation using very low voltage differential signaling (vLVDS)

● VisionLink transfer protocol

● I²C compliant master controller, 1.8 V interface, up to 400 kHz operation

4.2.2

Description

The STV0974 sensor interface is dedicated to the VS6552 image sensor that uses the VisionLink

data transfer protocol over vLVDS. This includes:

● An I²C master controller supporting 1.8 V interface and 400 kHz operation. The I²C master port

signals are MSDA and MSCL that require external pull-up resistors. Internally, the I²C master is

a peripheral of the microprocessor control unit.

● Two vLVDS receivers for sensor data and clock signals, PDATA and PCLK differential pairs

respectively. Each receiver accepts 1.8 V LVDS signals

● A VisionLink data synchronization and extraction unit, which extracts image timing references,

active video and sensor status information. The extracted video stream in raw Bayer format

along with active video strobes are connected to the video processing unit. The sensor status

information is presented to the microprocessor control unit.

STV0974 Datasheet(PDF) 9 Page - STMicroelectronics