This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DS90UB988-Q1: 988两路I2C

Part Number: DS90UB988-Q1

988有2路I2C,我们目前使用I2C 0通道,将988连接到MCU,另一路引脚悬空,是否有问题;另外发现FPD LINK通道正常工作时,MCU无法通过I2C 0通道读取到988的寄存器,如果将I2C 1通道也接入MCU,是否就可以解决这个问题

  • 您好,
    1:开漏输出,理论上悬空不会有问题,但为了稳定性等建议接地或者上拉电阻到电源。
    2:如果将I2C 1通道接入有可能会解决,不过也需要确认I2C总线的优先级,I2C 1的连接和时序和配置等