SNLA356 September 2020 DS90UB941AS-Q1 , DS90UH941AS-Q1
The DS90UB941AS-Q1 FPD-Link III serializer enables low latency, and highly flexible bridging from MIPI DSI to FPD-Link III in order to carry video data, audio data, control data, and other communications protocols such as I2C, and SPI over longer cable distances when paired with a DSI source.
The MIPI DSI protocol contains a wide feature set and flexibility in order fit as many applications as possible. As a result, system designers may struggle to understand how to properly configure and verify a complex DSI source in conjunction with FPD-Link. This guide will provide a common bring-up flow to help with DSI source configuration considerations and insight on how to resolve common system level problems when implementing a solution with DS90UB941AS-Q1
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The DS90UB941AS-Q1 MIPI DSI serializer enables low latency bridging of a processor video source to a remote display panel or SoC across twisted pair or coaxial cabling. Since the DS90UB941AS-Q1 serializer is compatible with multiple FPD-Link deserializer products, it also enables easy video format conversion from MIPI DSI to MIPI CSI-2, OpenLDI, RGB, or other protocols depending on the application requirement.
When working with multiple video protocols and high speed serializer/deserializer devices, it is important for the system designer to have a systematic approach to determining the root cause of application issues so that they can be quickly resolved. This guide will walk through some of the key considerations that the system designer should be aware of, specifically regarding the MIPI DSI interface between the video source, and the DS90UB941AS-Q1 FPD-Link III serializer. Some examples will be provided for common issue symptoms and the approach to resolving the problem.