Four camera streams, one deserializer chip

July 27, 2015 // By Christoph Hammerschmidt
In today’s cars, customers increasingly rely on surround-view systems for support for parking pedestrian detection and similar purposes. The cameras for such systems are connected to the related ADAS through separate broadband signal lines. Chipmaker Maxim Integrated Products has introduced a quad deserializer device that helps designers reducing component count and thus reduce complexity. Also developers of machine vision and 3D camera systems can benefit from the new device.

The MAX9286 automotive deserializer accepts and synchronizes video streams from four cameras via a shielded twisted-pair (STP) or coaxial cable by up to 15 meters. The MAX9286 outputs the data via a four-lane, industry-standard CSI-2 interface to a video processor, reducing board space and component count by replacing four discrete deserializers and an FPGA. In addition, this highly integrated chip eliminates additional software required for camera synchronization.

Key benefits fo the MAX9286 include:

  1. Shortens design time: lowers design risk and time to market with automatic generation of camera synchronization signals, alignment of image data from multiple sensors to the same pixel, and user programmability of key parameters.
  2. Lowers cost: integration reduces board space and component count by eliminating four discrete deserializers and an FPGA. It also supports power over coaxial cabling to reduce wiring and cost.
  3. Diagnostic capability: enhances system integrity with on-chip diagnostics for link bit error rate (BER), detection of camera falling out of sync, or cable shorts to power/ground.

“The need for surround view capability in the automotive market poses unique challenges in ADAS designs,” said Balagopal Mayampurath, Director of Business Management at Maxim Integrated. “This product simplifies first generation surround view system design and enables a seamless transition to next-generation systems.”

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