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ADAU1452 spi master port during reset?

Question asked by rkn on Jan 16, 2018
Latest reply on Jan 18, 2018 by rkn

Hi,

 

what happens to the pins of the spi master port on an ADAU1452 when I set the device in reset? Are they going to high-z? In my target application I would like to program the eeprom by a microcontroller which becomes the master on the spi bus during programming. Thus, my idea is to keep the DSP in reset during programming the eeprom.

Can I do it this way or am I running into a conflict with the master spi port of the DSP when the mcu takes over the spi bus?

I know that I could program through the slave port but that did never work for the last three boards although used the same circuit and devices like on the evaluation boards. Therefore, I do not trust in this solution.

 

Raphael

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