4.13.5.8 Chip Identifier
The DBGU features two chip identifier registers, DBGU Chip ID register (DBGU_CIDR) and DBGU Extension ID register (DBGU_EXID). Both registers contain a hard-wired value that is read-only.
| Device Name | DBGU_CIDR | DBGU_EXID |
|---|---|---|
| SAM9X70 | 0x8975003X | 0x00000080 |
| 0x000000C4 (SL1) | ||
| 0x000000C5 (SL2) | ||
| 0x000000C6 (SL3) | ||
| SAM9X72 | 0x00000082 | |
| 0x000000D8 (SL1) | ||
| 0x000000D9 (SL2) | ||
| 0x000000DA (SL3) | ||
| SAM9X75 | 0x00000085 | |
| 0x000000DC (SL1) | ||
| 0x000000DD (SL2) | ||
| 0x000000DE (SL3) |
The first register (DBGU_CIDR) contains the following fields:
- EXT: shows the use of the extension identifier register
- ID: product ID value
- VERSION: revision of the device
The second register (DBGU_EXID) is device-dependent and is read as 0 if DBGU_CIDR.EXT is 0.