I am testing the UJA1169TK/F/3Z and my MCU is S32K146（64 pins）.
The 1169 is configured in Forced Normal mode in the factory. Therefore, I can now use the CAN communication even if I do not configure 1169. These have been debugged and passed on my board.
But when I use flexio_SPI to read the status of 1169, the return is always 0.
I know that in the SDK "sbc_uja116x_driver.c" use LPSPI by default, but I can only use the flexio SPI on my board.
So, I made some changes based on the SDK.
My expert component is configured as follows：
MOSI : flexio 5 = PTE 11
MISO : flexio 4 = PTE 10
CS : flexio 6 = PTE 4
SCK : flexio 7 = PTE 5
Some related code in my project：
status = FLEXIO_DRV_InitDevice(INST_FLEXIO_SPI1, &flexIODeviceState);
status = FLEXIO_SPI_DRV_MasterInit(INST_FLEXIO_SPI1, &flexio_spi1_MasterConfig0, &flexIOSPIState_Master);
status = SBC_DataTransfer(SBC_UJA_IDENTIF, NULL, ®Data);
In the "SBC_DataTransfer()", I replace the "LPSPI_DRV_MasterTransferBlocking()" with "FLEXIO_SPI_DRV_MasterTransferBlocking()"
Below is the debug result:
From the datasheet, these registers should be readable：
Although the read returns are successful, the results are all zero.
Your configuration seems to be correct. However, it would be good to see what is going on on the bus. Do you have a logic analyzer or an oscilloscope to capture the SPI traffic?
Also I would recommend you taking a closer look at the attached AH1306 describing the SPI interface and software flow in details. If you create a standard ticket, I can share with you also the UJA1169 example project which demonstrates how to initialize the UJA1169, trigger the watchdog, change operation modes, handle events etc.