AnsweredAssumed Answered

blown efuse via uart

Question asked by sergey saryarov on Sep 12, 2012
Latest reply on Jan 8, 2013 by Manohar Chinnadurai

Hi. I have problem.

I have custom board with iMX537 processor. In project I haven't placed switch to configurate processor via GPIO (set eFUSE via GPIO).

I reference manual I've found serial protocol description to configurate processor via uart. Also, there says what via uart user can programm eFUSE. But I can't do that. For example, I send next command via uart

02 02 00 00 08 14 08 00 00 00 00 00 00 00 19 00

This command is for configurate CFG3[7:0] eFUSE

I receive ack

56 78 78 56

After that I send next command

01 01 00 00 08 14 08 00 00 00 01 00 00 00 00 00

And receive ack

56 78 78 56 02

 

But I wrote 0x19 and I've read 0x02.

 

In reference manual says, what 0x00 00 08 14 is the addrress for CFG3[7:0] eFUSE.

 

Can anybody help me to undestand how can I programm eFuse via uart.

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