
Symmetric Key Hardware Accelerator (SKHA)
Freescale Semiconductor
35-7
35.2.2
SKHA Control Register (SKCR)
The SKCR contains bits that should be set after a hardware reset.
Table 35-2. SKMR Field Descriptions
Field
Description
31–13
Reserved, should be cleared.
12–9
CTRM
Counter mode modulus. Specifies modulus size for counter mode. In counter mode, the initial counter value is
incremented modulo 2
N
.
8
DKP
Disable key parity check. Disables checking DES parity.
0 Check for DES key parity errors
1 Do not check for DES key parity errors
Note: A mode error is generated if this bit is set to one while in AES mode.
7–5
Reserved, should be cleared.
4–3
CM
Cipher mode. Selects the cipher mode.
00 ECB
01 CBC
10 Reserved
11 CTR
2
DIR
Direction. Selects encryption or decryption.
0 Decrypt
1 Encrypt
1–0
ALG
Algorithm. Selects which algorithm the SKHA module uses.
00 AES
01 DES
10 3DES
11 Reserved
CTRM
CTR Modulus
DES or 3DES
AES
0000
2
8
2
8
0001
2
16
2
16
...
...
...
0110
2
56
2
56
0111
2
64
2
64
1000
Reserved
2
72
1001
Reserved
2
80
...
...
...
1110
Reserved
2
120
1111
Reserved
2
128
1
If CTRM is set to reserved settings for DES or
3DES, a mode error occurs.
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...