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SPI interface issue with MPC5748G Devkit Revision D

Question asked by Sanjib Das on Dec 7, 2019
Latest reply on Feb 7, 2020 by Petr Stancik

I have interfaced peripheral over SPI using J3 connector of MPC5748 DEVKIT. I am trying to read signature register from that peripheral. I observed erratic behavior with Revision D board where I am able to read signature for first read operation after power up. It is failing for successive reads. If I power up the DEVKIT it works for first read operation.


I tried the same code with Revision B DEVKIT and it works fine for successive reads without needing multiple power up.


What could be the issue with Revision D DEVKIT? Are there any additional components required for SPI connection?

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