System information
This is a special IP block that is automatically populated with useful information about the system. These values are useful to know what the parameters were when a bitstream was generate.
| Offset | Register |
|---|---|
| 0x0000 | First 4 bytes of git commit hash from which this bistream was generated. |
| 0x0004 | Second 4 bytes of git commit hash. |
| 0x0008 | Git dirty status (1 if dirty or 0 if clean). |
| 0x000C | System clock frequency in Hz. |
| 0x0010 | GPIO info of which least significant byte is the number of instances. |
| 0x0014 | UART info of which least significant byte is the number of instances. |
| 0x0018 | I2C info of which least significant byte is the number of instances. |
| 0x001C | SPI info of which least significant byte is the number of instances. |
| 0x0020 | Initiate capture of 'DNA value' identifying the specific device. |
| 0x0024 | Next bit of the 57-bit 'DNA value' may be read in the least significant bit. |
| 0x0028 | Size of the main memory in kibibytes (KiB). |
| 0x002C | Size of the HyperRAM in kibibytes (KiB). |
| 0x0030 | Size of the tagged (capability aware) portion of the HyperRAM (KiB). |