PGA900: PGA900 programming problem

Lucas LIn

Part Number: PGA900

Tool/software:

We encountered a programming issue with a batch of PGA900.

When programming the OTP area, we load the FW of the IC in the original byte order (this FW provided by TI), such as 0x12 34 56 78

But PGA900 correct byte order would be like 0x78 56 34 12, the order of the bytes in each group of 4 bytes is reversed.

this issue resulted in the IC not working after programmed.

we need TI's programming team to help to confirm:

1. Is there any special method to re-program or overwrite the OTP area？

2.please help to review and advice the right byte order of PGA900.

In my understanding now, for example in the first line of the FW, the data area should be in the yellow box in below screenshot, and the correct byte order should be: 00000020 47040001 4D140000 51140000 4F140000 4F140000 4F140000 00000000

Is that correct?

3 months ago

0 Kyle R. Stone 3 months ago

TI__Intellectual 1470 points

Hello! We appreciate your interest in this device, however at this time we are unable to offer additional support. Please use our extensive resources – including datasheets, user’s guides, application notes, FAQs, and existing E2E posts – to guide your design and help troubleshoot any issues. We apologize for any inconvenience this may cause.

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1380595/faq-pga900-answers-to-common-questions-for-ti-s-pga900-and-pga30x-devices

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1387606/faq-pga900-questions-regarding-the-eeprom-used-on-the-pga900-pga300-pga302-and-pga305-devices

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1387609/faq-pga900-questions-regarding-the-coefficients-used-in-the-pga900-pga300-pga302-and-pga305-devices

0 Lucas LIn 3 months ago in reply to Kyle R. Stone

Prodigy 20 points

Hello

Is there any special way to re-program or overwrite the OTP area of PGA900？

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PGA900: PGA900 programming problem