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Question about AD7190 DOUT/(RDY) ̅ pin

Question asked by Jun.Gu on Jul 30, 2018
Latest reply on Aug 1, 2018 by JellenieR

Hello,

    We are trying to read an AD7190 via SPI interface with (RDY) ̅  pin as an external interruption source. The issue is that AD7190 DOUT/(RDY) ̅  pin is just one pin which serves a dual purpose.

    But at the MCU side, the pin must be configured as GPIO_FUNCITON to be running as an external interruption source, and configured as SPI_FUNCTION to be running as SPI MISO. It can' serves as both role of GPIO_FUNCITON and SPI_FUNCTION at the same time.

    Solutions or suggestions about how to read an AD7190 via SPI interface with (RDY) ̅  pin as an external interruption source is much appreciated.

 

BR,

Jun

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