FX3 recognized as SD3

[RoFl_4496141]

We just received our assemblies for our FX3-based board.

However, my operating system (as well as the USB Control Center) recognizes it as an SD3 instead of an FX3. I checked the package's silkscreen and it reads:

CYUSB3014-BZX

C 1931

A 33 THA

CYP 629235

Is it possible that I have an assembly problem?

An old IC fab?

A signal integrity design oversight?

I'm not sure how to proceed troubleshooting this. Any help is appreciated.

[JayakrishnaT_76 · Accepted solution]

Hello,

Please let me know the following details to debug the issue:

1. Is the device enumerating as "Cypress SD3 USB Boot Device" when it is plugged into the host?

2. Can you please share the part of schematics of the board showing the connection of PMODE pins of FX3?

Best Regards,

Jayakrishna

[RoFl_4496141]

Hi,

Thanks for the pointers, I managed to track it down: it was indeed a PMODE problem.

I'm posting details below in the hopes it helps someone else in the future.

Is the device enumerating as "Cypress SD3 USB Boot Device" when it is plugged into the host?

Yes, indeed that's the device shown. PID is shown as 0x0005 (image below).

Can you please share the part of schematics of the board showing the connection of PMODE pins of FX3?

Our board has the option to reconfigure PMODE and they wre all set to 'Z' (unconnected) by mistake. It didn't occur to me that it would enumerate as a different PID. Good to know.

Of course, I'm also glad nothing's blatantly wrong with our design.

[JayakrishnaT_76]

Hello,

Glad to hear that the issue is resolved!

Best Regards,

Jayakrishna