Zynq UltraScale+ Devices Register Reference > Module Summary > CSU Module > puf_status (CSU) Register
Register Name | puf_status |
---|---|
Relative Address | 0x0000004010 |
Absolute Address | 0x00FFCA4010 (CSU) |
Width | 32 |
Type | roRead-only |
Reset Value | 0x00000000 |
Description | PUF Status |
Field Name | Bits | Type | Reset Value | Description |
---|---|---|---|---|
overflow | 29:28 | roRead-only | 0x0 | Overflow, if bits are not 0. reduce SHUT[SOPEN] valiue. This value is only valid when STATUS[KEY_RDY] is asserted. |
aux | 27:4 | roRead-only | 0x0 | During provisioning, auxiliary sundrome bits are stored here and must be written to the eFuse or boot image. During regeneration, AUX outputs auxiliary regeneration converges statistcs indicating whether convergence has ocurred during an interative recover process (iterative recovery is used in "4K" mode. This value is only valid when STATUS[KEY_RDY] is asserted. |
key_rdy | 3 | roRead-only | 0x0 | Indicates that the key is ready |
Reserved | 2 | roRead-only | 0x0 | Reserved |
key_zero | 1 | roRead-only | 0x0 | Indicates that the PUF key has been zeroized |
syn_wrd_rdy | 0 | roRead-only | 0x0 | Indicates a syndrome word is ready in the PUF_WORD register. |