Migration AN5327_SW from S12ZVML128 to S12ZVML31(48Pin).

[LiZhanWu]

Migration AN5327_SW from S12ZVML128 to S12ZVML31(48Pin).An error occurs when the software is running (permFaults.mcu.B.GDU_Error=1);I measured the AMP0 pin voltage, and I suspect that AMP is not enabled.How should I check this problem .

[danielmartynek]

The pins #17,18 and 19 are AMP0, AMPM0, AMPP0 by default.

Do you have your own board?

There could be some HW issue.

Can you share oscillograms of the signals and the schematic of the board?

BR, Daniel

[LiZhanWu]

Possible hardware problem。After adjusting the circuit，AMP voltage may be correct。I need to try。

Thanks!

[danielmartynek]

Hi @LiZhanWu,

Do you follow AN5330 Migration Guide for S12ZVM Devices

https://www.nxp.com/docs/en/application-note/AN5330.pdf

Regarding the amplifier, can you read the GDUE register?

BR, Daniel

[LiZhanWu]

[danielmartynek]

Hi @LiZhanWu,

The amplification is 10 in this configuration.

So, you will get the output of the aplifier saturated.

Can you show the waveforms?

Regards,

Daniel

[LiZhanWu]

I readed AN5330。

GDUE Register value is 0x17.

I measure the pin AMPP0、AMPM0、AMP0 voltage, The amplifier is not working in the amplification state.On the other board(S12ZVML128), the amplifier works in the amplification state.

Is pin mapping required or not, I didn't find the information