TPL communication with MC33665A

[Jamie-Chen]

I was initially using the SPC5775BDK3MME2 for TPL communication via MC33664ATL1EG with RD33771CDSTEVB. Recently, I acquired an FRDM665SPIEVB intending to replace the MC33664ATL1EG. However, I encountered communication issues where successful communication couldn't be established.

Currently, I have measured the SPI requests and responses on FRDM665SPIEVB using an oscilloscope, and both have shown correct data. However, while measuring the TPL signals, the TPL sent by FRDM665SPIEVB like below

It has ( Start – of – message ) and  ( End – of – message ).

But is not time interval between bytes like the TPL sent by MC33664ATL1EG ( like the pic below)

I would like to inquire if there might be any reasons causing RD33771CDSTEVB to be unable to interpret the TPL signals sent by FRDM665SPIEVB.

Thanks

##MC33665A
#MC33771C
#SPC5775B

[guoweisun]

There is not too much example code for MC33665 but you can refer to below link to download one and refer to it:

S32K376 Battery Management System (BMS) and Vehicle Control Unit (VCU) | NXP Semiconductors

[daich]

is the **S32K376 BMS and VCU POC Design Reference Software** link?

but i cant open it

[daich]

I checked this link, but I didn't find the code. Where is the detailed code path?

Thank you!