| Bit31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
| Access | |||||||
| Reset | |||||||
| Bit23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
| Access | |||||||
| Reset | |||||||
| Bit15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| Access | |||||||
| Reset | |||||||
| Bit7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| CCLASS[3:0] | PREAMBLE[3:0] | ||||||
| AccessR | R | R | R | R | R | R | R |
| Reset0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Component Class
These bits will always return 0x1 when read indicating that this ARM CoreSight component is ROM table (refer to the ARM Debug Interface v5 Architecture Specification at http://www.arm.com).
Preamble
These bits will always return 0x0 when read.