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DS90UB935-Q1: [ Enquiry ] SerDes application for Vehicle Reverse Camera by FPD Link III

Sari Isa
Prodigy 10 points
Part Number: DS90UB935-Q1

Tool/software:

Hi TI team,

We are now developing a Vehicle Reverse Camera with Dynamic Parking guideline.

Thus, we are planning to apply TI FPD Link III interface for this system.

I have few questions as below ;

1.Does TI DS90UB935-Q1 serializer integrated well with Samsung image sensor S5K4ACSXB3 for FPD Link III communication?

2.Do you have any other suggestion on serializer side which we can integrate with Samsung image sensor S5K4ACSXB3? Also, with de-serializer information.

3.Does TI have any MCU suggestion to be integrated with Samsung image sensor S5K4ACSXB3 and TI serializer? This mainly for Dynamic Parking Guideline purpose

4.How is the communication from de-serializer back to serializer and MCU? In what form?

5.Do you have any specific solution that we can apply?

Your response is appreciated.

Thank you.

  • 0
    TI__Mastermind 26410 points

    Hello,

    Thank you for reaching out. The 935 is a CSI based serializer and is compatible with the MIPI CSI-2 protocol. As long as the S5K4ACSXB3 also follows the MIPI CSI-2 protocol, they will be able to transmit data to each other. This is true for any other CSI based sensor and serializer. 

    Determining an appropriate serializer for an application, is mostly dependent on the required bandwidth. The higher the resolution of the sensor, the more bandwidth the serializer will need to support the video data. For example the 935 is good for lower bandwidth applications (up to 2.528Gbps), while the DS90UB953 can support higher bandwidth applications (up to 3.328Gbps). To estimate the bandwidth of your application you can use the equation below:

    Bandwidth = Horizontal Active x Vertical Active x bits per pixel x frames per second x blanking

    A common CSI deserializer pairing is the DS90UB954, which will output the data using the same CSI protocol. The system's MCU will need to support the CSI protocol as well. There are several MCUs which can support CSI. If there are any other requirements in your system, or additional functions the MCU will need to perform, that can help narrow down to the appropriate device. For a general overview of available TI MCU's, see here.

    The devices communicate using I2C transactions. For most applications the 935 or 953 serializers are suitable, but if you expect to support a high bandwidth, or need any additional specific features for your system, please provide those details, and we can determine if another device may be more suitable.

  • 0 in reply to Darrah Merillat
    Prodigy 10 points

    Hi Darrah,

    Thanks for your reply.

    1.For the calculation,

    Bandwidth = Horizontal Active x Vertical Active x bits per pixel x frames per second x blanking

    Blanking refers to blanking factor? Or vertical/horizontal blanking time?

    2.What is the de-serializer for DS90UB953?

    3.For this design parking guideline, MCU will read steering angle, guideline coordination and communicate with serializer and image sensor through I2C.

      Does Microchip ATSAMHAE161A MCU works well with DS90UB953 ? How is the communication from de-serializer back to the MCU ?

    Thank you.

  • 0 in reply to Sari Isa
    TI__Mastermind 26410 points

    Hello,

    Blanking refers to the percentage of blanking that the sensor protocol adds to the active data. Each frame sent by the camera will be composed of active data (which is generally refered to as the resolution) and additional blanking. The blanking fills the space between the active data and will depend on the sensor. The sensor vendor can provide the sensor specific blanking details, but for estimations 25% blanking can be used.

    The 953 is compatible with several deserializers. For most cases the DS90UB954 is suitable. If your system will include multiple sensors, the DS90UB960 (quad deserializer) could also be useful.

    FPD-Link devices act to forward the video data between the sensor and MCU. There is no specific compatibility requirements between the serializer, deserializer, and MCU other than the devices being compatible with the MIPI CSI protocol. The deserializer communicates with the MCU using I2C. If the chosen MCU supports both I2C communication and can receive MIPI CSI data, it will work with the CSI FPD-Link devices.