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DS90UB948-Q1: FPD-LINK device I2C and SPI interface function

Shawn_Wang
Expert 3811 points
Part Number: DS90UB948-Q1

Hi team

It is the first time my customer using FPD-LINK device and I am also not familiar with this device.

I am wondering if you could help introduce the function of I2C and SPI interface?  And what is the difference between these two interfaces from the aspect of function?

 

I roughly summery the function below and could you help check if my understanding is correct and complete it. 

SPI

  • SPI cannot be used to access serializer or deserializer registers.
  • What is the function of SPI interface?

I2C

  • The device internal registers could be configured by its I2C interface.
  • The I2C command could pass through the back channel/forward channel to configure the connected device.

Thank you.

  • 0
    TI__Guru** 108190 points

    Hello Shawn,

    yes your understanding is correct.

    SPI is used to communicate with a remote slave in case a faster interface that I2C is required, such as for using Touch-screen.

    For more details, please refer to the 948 datasheet  Section "7.3.10 SPI Communication"