IIS2MDC这个器件我用3.3V供电，vcc和vddio都是3.3v，然�?�用fpga对它进行读写，�?�现sdio输出是1.8v电平，请问这个正常�?�？

[Eleon BORLINI]

Hi @Pzhen.1​ ,

Used Google Translate, is the translation below correct?

I use 3.3V for the IIS2MDC device, both VCC and VDD_IO are 3.3V, and then use FPGA to read and write it, and I find that the SDIO output is 1.8V. Is this normal?

If so, I can say you that no, it is not normal. The SDIO high voltage has to be near Vdd_IO, so near 3.3V. I believe you should check if you are maybe measuring the average voltage on the output (3.3V/2 = 1.65V), or your application processor / master I2C / SPI (the FPGA) is powered at 1.8V.

-Eleon

[Eleon BORLINI]

Hi @Pzhen.1​ ,

any update about this topic, from your side?

-Eleon