About SPI Slave Port of ADAU1452

Hello, ADI Support Team

I have an additional explanation.

As the background of this question, I am considering to connect between MCU and ADAU1452 and other device via SPI.

And then, SPI master is MCU, and SPI slave is ADAU1452 and other device.

In this Multiple slave connection, when MCU is transmitting with other device, MISO pin of ADAU1452 should be Hi-Z, I think.

So, I'd like to confirm if MISO of ADAU1452 is Hi-Z or not, when CS is high (ADAU1452 is not selected).

Best regards, TomY

Hello, ADI Support Team

Regarding this question, I could find the following description in the datasheet.

Page 38 : SPI Slave Port

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The MISO signal remains three-state until a read operation is requested.

This allows other SPI-compatible peripherals to share the same MISO line.

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Therefore, I'm clear now.

If my point which I found is not correct, please let me know.

Best regards, TomY

Hello TomY,

Sorry for the delay. Yes, it will tri-state. It is designed to be in a multi-slave application.

Dave T