55.5.13 TDES XTEA Rounds Register
This register can only be written if the WPEN bit is cleared in the TDES Write Protection Mode Register.
| Name: | TDES_XTEA_RNDR |
| Offset: | 0x70 |
| Reset: | 0x000000000 |
| Property: | Read/Write |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| XTEA_RNDS[5:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | |||
Bits 5:0 – XTEA_RNDS[5:0] Number of Rounds
This 6-bit field is used to define the number of complete rounds (1 complete round = 2 Feistel rounds) processed in XTEA algorithm.
The value of XTEA_RNDS has no effect if TDES_MR.TDESMOD is set to 0x0 or 0x1.
0x00 corresponds to 1 complete round, 0x01 corresponds to 2 complete rounds, etc.