| Bit Index | Default | Access Type | Description |
|---|---|---|---|
| 31:20 | 12’h1fc | RO | Subsystem identifier |
| 19:16 | 4’h2 | RO | IRQ Identifier |
| 15:8 | 8’h0 | RO | Reserved |
| 7:0 | 8'h04 | RO |
Version 8'h01: 2015.3 and 2015.4 8'h02: 2016.1 8'h03: 2016.2 8'h04: 2016.3 8'h05: 2016.4 8'h06: 2017.1 to current release |