ROHM Develops "BU18xx82-M," a Serial/Deserializer for In-Vehicle Multiscreen Displays that Simplifies the Video Transmission Path
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Update time : 2022-07-25 14:05:54
ROHM (headquartered in Kyoto, Japan), a leading global semiconductor manufacturer, has developed a SerDes IC*1 (serializer: BU18TL82-M and deserializer: BU18RL82-M) that supports full HD resolution (1,980 x 1,080 pixels) in the field of in-vehicle displays in response to the trend toward multi-screen displays.
In recent years, with the popularity of electronic mirrors and LCD instrument clusters, the number of displays installed per vehicle has increased and the video transmission path has become more complex, which inevitably leads to an increase in system cost and risk of failure, so simplifying the video transmission path has been a pressing issue to address. It is also important to incorporate functional safety design as problems such as image jams on the e-mirror and unlit indicator icons on the dashboard can lead to serious accidents.
The new product addresses these problems through daisy-chain connections and end-to-end data monitoring functions. In addition, the new product inherits the low power consumption and low noise characteristics of the BU18xMxx-C, a SerDes IC for in-vehicle camera modules that will be in mass production from June 2021, making it ideal for next-generation in-vehicle displays where video transmission paths are becoming increasingly complex.
While conventional SerDes ICs require pairs of serializers and deserializers to transmit video, ROHM's new product enables daisy-chaining of the deserializer "BU18RL82-M", so that video can be transmitted to multiple paths via a single serializer. Since the number of connectors and cables can be reduced, the video transmission path can be simplified, thus helping to reduce the system cost and risk of failure of the application. In addition, as a SerDes IC supporting full HD resolution, the new product has a function to monitor end-to-end*3 (from the SoC to the display) whether video data has been transmitted correctly by comparing CRC*2 values, which helps to improve the functional safety of application products.
