Customer OTP - Bank 0 contains data

Erich Ebenhoch

Hello,

I did take a look on OTP of the TMS570LS31xxxx (in detail on TMX570LS3137AZWTQQ and one PGE) recently. For this reason, I dumped the Customer OTP.
On all devices I've checked, the customer OTP already contained data on Bank 0 in the first couple bytes (see Image below).
I could not find any information about this in SPNU499. Is this only relavant for the TMX and will be solved in the TMP or TMS?

best regards,

Erich E.

over 13 years ago

0 Bob Crosby over 13 years ago

TI__Guru 72500 points

The 128 bits from 0xF0000000 to 0xF000000F are the JTAG security unlock code. The AJSM is described in section 4.21.6 of the datasheet (SPNS162 http://www.ti.com/lit/ds/spns162/spns162.pdf ). Changing this value will lock the JTAG interface on the device. This will remain the same for the TMP and TMS devices. Does this answer your question?

best regards,

Bob C.

0 Erich Ebenhoch over 13 years ago in reply to Bob Crosby

Intellectual 255 points

Thanks for the response, it did answer my question!

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Customer OTP - Bank 0 contains data