BHI260AP I2C Host connection

Dear Community.

My team and I are pretty new to the BHI260AP and are exploring ways to integrate it with the BMM150 into our PCB designs.

We wanted to interface the BHI with a host MCU, placed in another PCB, using I2C. So we were considering only 4 connections from MCU to the BHI: VDD, GND, SDA, and SCK; We realized that the pin HIRQ, from the documentation, is also required to be connected to the MCU.

Is there a setup in which we can skip this connection? I can tell that in our design it should be the MCU to interrogate the BHI for data, even if there is no interrupt. Can someone give us some hints?

Best reply by dariosortino

Instead to check the physical HIRQ pin, there is a register that reflect the status of the FIFO, as explained in the datasheet.

 

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