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DS90UB947-Q1：一块947芯片对端是2块948的屏，dual模式需要特殊适配哪些寄存器

chaoyi zhang
Prodigy 40 points
Part Number: DS90UB947-Q1

一块947芯片对端是2块948的屏，dual模式需要特殊适配哪些寄存器

  • 0
    TI__Mastermind 38935 points

    Hi Chaoyi,

    Using a translator, it is hard to understand what you are asking. If possible, I would appreciate it if you could reach out to an FAE and have them ask your question, or if you could re-state your question in English, that way we can better understand what you are asking about. 

    Thanks,

    Ryan

  • 0 in reply to Ryan Kitto
    Prodigy 40 points

    Hi Ryan,      

         In the following block diagram, I am not clear whether i2c can communicate directly when ds90ub948 is directly connected with mcu, and whether ds90ub948 needs special Settings. The write address of mcu is 0x78.  

         Thank you very much for your reply !

  • 0 in reply to Ryan Kitto
    Prodigy 40 points

    Hi Ryan,      

         In the following block diagram, I am not clear whether i2c can communicate directly when ds90ub948 is directly connected with mcu, and whether ds90ub948 needs special Settings. The write address of mcu is 0x78.  

         Thank you very much for your reply !

  • 0 in reply to Ryan Kitto
    Prodigy 40 points

    Hi Ryan,      

         In the following block diagram, I am not clear whether i2c can communicate directly when ds90ub948 is directly connected with mcu, and whether ds90ub948 needs special Settings. The write address of mcu is 0x78.  

         Thank you very much for your reply !

  • 0 in reply to Ryan Kitto
    Prodigy 40 points

    Hi Ryan,      

         In the following block diagram, I am not clear whether i2c can communicate directly when ds90ub948 is directly connected with mcu, and whether ds90ub948 needs special Settings. The write address of mcu is 0x78.  

         Thank you very much for your reply !

  • 0 in reply to Ryan Kitto
    Prodigy 40 points

    Hi Ryan,      

         In the following block diagram, I am not clear whether i2c can communicate directly when ds90ub948 is directly connected with mcu, and whether ds90ub948 needs special Settings. The write address of mcu is 0x78.  

         Thank you very much for your reply !

  • 0 in reply to chaoyi zhang
    TI__Mastermind 38935 points

    Hi Chaoyi,

    If the MCU is connected to the DS90UB948, yes, you should be able to communicate with it by send commands using the address of the 948. For communicating with the MCU, the 948 should not need any special settings, no.

    Please let me know if you have any other questions.

    Thanks,

    Ryan

  • 0 in reply to Ryan Kitto
    Prodigy 40 points

    Hi Ryan,

         The I2C address of DS90UB948 is 0x2c, the write address of MCU is 0x78, and the read address is 0x79. If I write the value to 948 now, shall I use 0x2c or 0x78.

         In addition, I also want to know whether the link is automatically completed when 947 and 948 are connected, and whether I need to make special Settings.

         Thank you very much for your reply ! 

    Chaoyi

  • +1 in reply to chaoyi zhang
    TI__Mastermind 38935 points

    Hi Chaoyi,

    If you are writing to the DS90UB948 from the MCU, the address you should be using to write/read should be 0x2C. Same goes with any device connected to the DS90UB948.

    For special settings, make sure the MODE_SEL pins on both devices are correctly set. If those are setup correctly, yes, the devices should automatically connect.

    Thanks,

    Ryan