AM3352: SYSBOOT pins connections

Jochen Stehle

Part Number: AM3352

Hello,

is it possible to connect the SYSBOOT Configuration Pins (especially SYSBOOT[4:0] which controlls the Bootsequenz) direct to GND or 3.3V without an resistor?

I want to protect my hardware from someone who tries to put a different voltage between resistor and AM3352 to change the Bootsequenz.

Thank you very much

Jochen

over 9 years ago

0 Jochen Stehle over 9 years ago

Prodigy 40 points

Bootsequenz means bootsequence

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi,

This is absolutely forbidden. You may permanently damage the device.

0 Jochen Stehle over 9 years ago in reply to Biser Gatchev-XID

Prodigy 40 points

Ok Thank you very much. Is there any other option to protect the HW ? We are useing a eMMC on Port MMC1 and nobody should be able to stop booting from this device and put his own code into from a other source.

Best Regards

0 Biser Gatchev-XID over 9 years ago in reply to Jochen Stehle

TI__Guru**** 393215 points

There are secure versions of the processor, but you need to contact TI directly to inquire about them. They cannot be discussed on a public forum.

0 Jochen Stehle over 9 years ago in reply to Biser Gatchev-XID

Prodigy 40 points

Oh that sounds good. Thank you. One last Question, with secure versions of the processor you mean a pin to pin compatible but only with security?

0 Biser Gatchev-XID over 9 years ago in reply to Jochen Stehle

TI__Guru**** 393215 points

Yes, correct.

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AM3352: SYSBOOT pins connections