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Silicon ID: random or structured?

urs
Associate II
Posted on March 06, 2009 at 13:04

Silicon ID: random or structured?

1 REPLY 1
urs
Associate II
Posted on May 17, 2011 at 13:05

Hi

Is the 96 bit silicon ID just a 96 bit long random number or are some bits fixed? Is it a structured word with, for example, some ID for ''ST Micro'' etc.?

We have several devices and we have noticed that ID[95:48] is random, whereas ID[47:0] is fixed: 0x32313458'43053445. Read as ASCII, this is ''214XC_4E''. Magic!

Thank you,

-Urs