lpcware

Correct dummy tag for CMAC hash in LPC43Sxx

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by IJeffray on Wed Jul 30 06:10:54 MST 2014
On Page 53 of UM10503.pdf, the dummy tag value for the CMAC hash calculation is given as 0x3456789A.

The problem is, that's a 32bit value and the HASH_VALUE field is 64 bits wide.   Should we repeat the value across the 64bits, or pad with something at top or bottom, or is the value just given incorrectly in the datasheet?

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