Question, i.MX25 unused pin handling

[Aemj]

hi team,

I would like to ask about the handling of the following unused pins.

- TAMPER_A/B

- MECH_C/D

- XP/XN

- YP/YN

My customer thinks those pins should be pulled  to high when unused for security.

If so, could you show me what register value should be used for pull-up?

Thanks,

Miyamoto

[Yuri]

   According to section 2.1 (Special Signal Considerations) of the i.MX25 Datasheet :

TAMPER_A/B and MECH_C/D pins can be left unconnected if the DryIce security
features are not being used.

http://cache.freescale.com/files/dsp/doc/data_sheet/IMX25CEC.pdf

When not used,  XP, XN, YP, YN  also may be left free.

Have a great day,
Yuri

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