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Question, i.MX283 LAN communication stops

Question asked by AVNET JAPAN FAE (team share account) on Feb 8, 2015
Latest reply on Feb 8, 2015 by igorpadykov

Dear team,


I would like to ask about unused pin handling of i.MX28.

My customer is using i.MX283 and he faces the issue that LAN communication could stop at EMC test.

The customer has a concern as below.

i.MX283 does not have some peripherals compared with i.MX287.

And some pins are supposed not to be connected to its die internally in i.MX283 chip, but the peripheral modules still exist on its die.

If so, some input pads are left as Open on its die, and those pads can be the antenna for noise.

Could you show me how user should treat the pins which is not used on i.MX283?

(Especially the pins which can be used on i.MX287 but not assigned on i.MX283)