MC33SA0528 Clock issues

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MC33SA0528 Clock issues

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1106064505
Contributor I

hello,

Our company uses the MCU to output a standard 4Mhz frequency clock signal to provide a clock to SA0528, and the SPI read and write registers are normal. However, the data that the register keeps reading out is a PLL out of lock state. I tried an independent active crystal oscillator to test whether the read value was still out of lock. The value read by the register is: 0x000000C0.

The attachment shows me my debugging history for you to parameterize where I might have gone wrong.

If you can, please guide me on how to adjust.

                                                                                                                                    Thanks

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TomasVaverka
NXP TechSupport
NXP TechSupport

Hello,

It is a bit strange that the MC33SA0528 reports fault flag of 4Mhz(CFM3 and CFM2), but SPI registers could read out normally. Does the MCU could read DSI bus data correctly through MC33SA0528 SPI?

Could you adjust 4MHz to its adjacent frequency to check whether have same fault flag?

BR, Tomas

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