topic Re: UJA1169ATK - No V2 voltage after initial MTPNV programming in Power Management

UJA1169ATK - No V2 voltage after initial MTPNV programming

Poley — Mon, 22 Apr 2024 14:10:37 GMT

Hi all, I have a UJA1169ATK on my PCB with my S32K148. I am trying to set up my UJA but after the first flashattempt I now no longer get V2 voltage or and CAN transceiver activity as a result. Here is the SPI command string I sent, where have a I gone wrong and can I reset MTPNV or do I have to do the CANH, CANL and RST bit reset?

0xFD00
0xE100
if NVMPS == 1 then continue if not go to "SKIP"
0xE600
0xE804
0xEA7E
"SKIP"
0x0207
0x4002
0x9801
0x4601

Where am I going wrong with this? Any help is appreciated, thank you!

Re: UJA1169ATK - No V2 voltage after initial MTPNV programming

guoweisun — Tue, 23 Apr 2024 01:22:12 GMT

Could you please share with your schematic part of UJA1169?

Re: UJA1169ATK - No V2 voltage after initial MTPNV programming

Poley — Wed, 24 Apr 2024 12:39:12 GMT

Hi @guoweisun , yep sure. V2 and CAN worked while it was in FNMC and I could read the identification register so I am assuming/hoping everything is ok hardware wise.

Poley_0-1713864773732.png

Re: UJA1169ATK - No V2 voltage after initial MTPNV programming

Poley — Thu, 25 Apr 2024 09:11:53 GMT

Hi @guoweisun

Have you had a chance to look at this? Thank you!

Re: UJA1169ATK - No V2 voltage after initial MTPNV programming

guoweisun — Thu, 25 Apr 2024 09:14:24 GMT

I checked your schematic here but no more issue found!

Re: UJA1169ATK - No V2 voltage after initial MTPNV programming

Poley — Thu, 25 Apr 2024 09:23:45 GMT

Hi @guoweisun

What am I doing wrong with the SPI commands? Seems to be HW is fine, communication to the UJA is fine so there must be something off in my SPI command routing that is stopping V2 from being activated.

Thanks

Re: UJA1169ATK - No V2 voltage after initial MTPNV programming

Poley — Mon, 29 Apr 2024 10:34:03 GMT

Hi @guoweisun , @PetrS

Is there any update on this by any chance? I am still not sure where my SPI commands are going wrong to enable V2. Thanks!

Re: UJA1169ATK - No V2 voltage after initial MTPNV programming

guoweisun — Tue, 30 Apr 2024 00:40:34 GMT

For the software please download for reference the drive from below link:

DocStore :: Products (nxp.com)

Re: UJA1169ATK - No V2 voltage after initial MTPNV programming

Poley — Tue, 30 Apr 2024 06:28:49 GMT

Hi @guoweisun

i am using FlexIO for SPI and MBDT so that’s why I am using the raw SPI commands and why the example SW doesn’t help too much. I have gone through the examples and software application hints and that’s where I got these SPI commands from. This is why I was asking where I am going wrong in my commands?

thanks