High-definition SerDes enable home theater experience in cars

High-definition SerDes enable home theater experience in cars

The FPD-Link III SerDes chipset with high-bandwidth digital content protection for automotive infotainment systems is offered as the first of its kind. The chipset, consisting of the DS90UH925Q serializer and DS90UH926Q deserializer, supports in-car distribution of protected video and audio content — such as Blu-ray movies up to 720p resolution — to create a home theater experience in the vehicle.

Both chips carry digital video, audio, and bidirectional I2 C control signals concurrently over a single twisted-pair cable using the HDCP-protected interface protocol approved by the Digital Content Protection (DCP) LLC. Each SerDes chipset has a unique HDCP key stored in on-chip memory to protect video content against unauthorized use. This on-chip processing of protected content simplifies infotainment system design and eliminates the need for costly secondary components, such as microcontrollers and FPGAs.

The DS90UH925Q serializer takes data from the head unit processor and converts video, digital I2 S audio, and control output into a serialized stream of information for distribution through the vehicle’s cable harness. The DS90UH926Q deserializer converts the serialized information stream back into video, audio, and control outputs needed to drive LCD displays in the central information display and rear passenger seats.

Both chips serially route 24-bit color video content over distances in excess of 10 m and provide a wide pixel clock range from 5 to 85 MHz. The SerDes are AEC-Q100 Grade-2 qualified for operation between –40° and 105°C, and are powered by a single 3.3-V supply. They feature a built-in self-test mode for factory test, system startup, and diagnostics. (Contact company for pricing — available now.)

National Semiconductor , Santa Clara , CA
Sales 800-272-9959

www.national.com