TUSB3410: When I plug in Linux PC, the device sometimes return PID is 3410 and sometimes is 3421.

YaoTien Huang

Prodigy 140 points

Part Number: TUSB3410

Hi Ti,

I have a TUSB3410 reference board.

This device returns different PID, 3410 and 3421 when I plug in Linux PC.

Could you explain this situation?

Thanks.

over 6 years ago

0 Brian Quach over 6 years ago

TI__Expert 4325 points

PID 0x3410 is the bootloader of the chip which is designed to load application firmware from either external memory device or USB host
Bootloader device driver. After FW finishes downloading, the Bootloader release its control to the application firmware which has PID 0x3421. If the FW fails to load for any reason, you will see PID 0x3410 only.

0 YaoTien Huang over 6 years ago in reply to Brian Quach

Prodigy 140 points

Where can I get TUSB3410's bootloader and firmware source code?
Thanks.

0 Brian Quach over 6 years ago in reply to YaoTien Huang

TI__Expert 4325 points

The bootloader source listing is provided at http://www.ti.com/product/TUSB3410/toolssoftware

Sorry, but we do not provide source code files for the bootloader or firmware to customers.

Regards,

Brian

0 YaoTien Huang over 6 years ago in reply to Brian Quach

Prodigy 140 points

From "TUSB3410 USB to I2C Application Note.pdf", I saw 3410 connect to a EEPROM, 24LCxx.

Does serial number define here?

How to I read/write this EEPROM?

Thanks.

0 Brian Quach over 6 years ago in reply to YaoTien Huang

TI__Expert 4325 points

You can use EEPROM burner SW http://www.ti.com/product/TUSB3410/toolssoftware to R/W EEPROM and configure serial.

0 YaoTien Huang over 6 years ago in reply to Brian Quach

Prodigy 140 points

1. Where can I get firmware image?
2. Why the serial number is not fix in "TUSB3x10 EEPROM Burner"?
Thanks.

0 Brian Quach over 6 years ago in reply to YaoTien Huang

TI__Expert 4325 points

FW image is not required. The driver loads the firmware via USB. EEPROM is mainly used to set custom descriptor values. Serial number is auto-gen by the tool to aid with manufacturing as each device requires a unique serial. There is an option in the menus to disable auto-gen.

Regards,

Brian

0 YaoTien Huang over 6 years ago in reply to Brian Quach

Prodigy 140 points

Yes, I can turn off "Serial Number Auto-Gen". And I can erase all EEPROM.

I change serial number and program to EEPROM and get message of program complete.

However, the serial number in EEPROM is origial after I reboot device.

Dose the tool need admin authentication and USB write authentication?

(Our company fix these two authentications)

Thanks.

0 Brian Quach over 6 years ago in reply to YaoTien Huang

TI__Expert 4325 points

How are you checking the serial? The tool doesn't show the descriptor values stored in EEPROM. You would need to collect a USB analyzer bus trace to check the value reported in the descriptors.

TUSB3x10 EEPROM Burner User's Guide.pdf

0 YaoTien Huang over 6 years ago in reply to Brian Quach

Prodigy 140 points

After I erase the EEPROM, the tool can't detect the device.

Do you know how to I fix it?

Thanks.

0 Brian Quach over 6 years ago in reply to YaoTien Huang

TI__Expert 4325 points

No, I have never seen that issue. I just tested erasing the EEPROM here and the device still works properly either as COM device or as EEPROM burner instance depending on the driver loaded. I suggest you test with a different PC and/or USB cable.