Loading STUSB4500 NVM config into STUSB4500L chip doesn't allow expected PD contracts. I am running on STSW-STUSB002 V1.09. Will upgrade to V1.1.1 allow for proper config of STUSB4500L? Thank you.

MIMBE · ‎2021-06-04

Gregory Go. · ‎2021-06-10

Hello,

Be careful that there are 2 different versions of the chip:

STUSB4500L (Light version) : USB-C controller, 5V only (up to 15W)
STUSB4500 (Full version) : USB PD controller, up to 20V/5A (up to 100W)

The STUSB4500L doesn’t support the USB-PD protocol, so you cannot request a voltage higher than 5V, and it doesn’t have any PDOs.

You cannot reprogram the NVM of STUSB4500L to transform it into STUSB4500 (non-L). It doesn’t work as you noticed in your experiment.

If your application needs to accept PD contracts >5V, then you cannot use STUSB4500_L, but you need to use instead the STUSB4500 (non-L).

To bring a little more confusion, be careful that STUSB4500 and STUSB4500L have the same DEVICE_ID = 0x25. But they do not have the same features set.

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Mmade.11 · ‎2021-06-04

I have the same issue but I am running STSW-STUSB002 v1.1.1. The NVM config for STUSB4500 will not work on the STUSB4500L.

MIMBE · ‎2021-06-04

Hello Mmade.1,

Thank for your answer.

Looks like customer support is quite poor at STmicro.

Mmmmh, wondering if TI's got good parts and useful GUI: customer support is fine at TI's.

Regards.

Matt

MIMBE · ‎2021-06-04

Hello again Mmade.1,

Do you get a "SINK PARAMETERS" page on the V1.11 GUI, like on the V1.09 one?

I don't.

No way to program the 4500L chip, though.

I don't know if I missed something on the installation.

Please let me know.

Regards.

Matt.

PS: I believe register mapping has changed from 4500 to 4500L. Reason why NVM configs for 4500 don't work with 4500L...

Mmade.11 · ‎2021-06-04

The documentation on the register mapping, especially for the NVM, is extremely poor. I had to go hunting through the ST code to understand how to program the NVM and then port that to Linux. Do you know of a way to identify the 4500 vs the 4500L part? The device id returns the same value for both parts.

Mmade.11 · ‎2021-06-04

And to answer your first question, I do get the SINK PARAMETERS page on v1.11.

Mmade.11 · ‎2021-06-04

MIMBE · ‎2021-06-04

I don't know other way than to look at the writing on the chip case! I didn't even notice there was a "L" suffix when I got the chips.

I'm in big troubles, 4500 no "L" isn't avalaible at present time.

So you do get the "SINK PARAMETERS" page on V1.11. I don't know what's wrong with my Windows 10 installation.

And even when entering all PDOPs voltage, current, tolerances parameters by hand doesn't help?

I mean: still no way to have the 4500L comply to the same PDOs than 4500?

Thanks.

Regards.

Matt

Mmade.11 · ‎2021-06-04

We are in the same trouble boat. The ability to get parts is hurting our development as well.

Yes, I do get the "SINK PARAMETERS" page on v1.11. I took a screenshot and it is above.

MIMBE · ‎2021-06-04

Thanks. And it doesn't work?

I mean not trying to import a whole NVM config, but entering ALL parameters one by one?

I am trying to find a software that appeared a few hours ago ON ST's site, written by an ST guy.

But their search engine is full sh...: doesn't show up anymore!

It's called "STUSB_NVM_ReadWrite_Utility_v1.00.zip".

ST search engine can't find it!

Maybe you could give it a try: I'm no good at sending scripts and commands on a prompt editor... I'd rather use a dumb interface for stupid users.

If you have a email address, I can forward it to you.

Regards.