Texas Instruments SimpleLink CC2620 Technical Reference Manual page 853

www.ti.com
10.2.1.22 AESAUTHLEN Register (Offset = 55Ch) [reset = 0h]
AESAUTHLEN is shown in
AES Authentication Length
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
Bit Field
31-0 LEN
SWCU117C – February 2015 – Revised September 2015
Submit Documentation Feedback
Figure 10-24 and described in
Figure 10-24. AESAUTHLEN Register
LEN
W-0h
Table 10-32. AESAUTHLEN Register Field Descriptions
Type Reset
W 0h
Copyright © 2015, Texas Instruments Incorporated
Table 10-32.
9
Description
Authentication data length in bytes for combined mode, CCM only.
Supported AAD lengths for CCM are from 0 to (216 – 28) bytes.
Once processing with this context is started, this length decrements
to zero.
Writing this register triggers the engine to start using this context for
CCM.
Cryptography Registers
8 7 6 5 4 3 2 1 0
853