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ADS8634: Problem with SPI Communication

Part Number: ADS8634

Hello Community,

unfortunately I have a problem with the SPI communication of the ADS8634.

I try to write some register and read them afterwards, but I always receive the same wrong data.

AL_PD pin is floaten, Clock is 2MHz

Steps I do:

-Sent reset massage (Transmitt: 0b0000001000000001)

-Write to Adress 06h to enable internal tempsensor and internal reference. (Transmitt: 0b0000110000000110)

-Read also adress 06h but get random data on miso line. (Transmitt: 0b0000110100000110)

I am very happy if somebody can help me.

Two Dataframes you can see in the picture:

Thanks a lot.