Global Hardware Parameters Register 1
| GHWPARAMS1_2_0 | IDWIDTH - 1 |
| GHWPARAMS1_5_3 | BURSTWIDTH - 1 |
| GHWPARAMS1_8_6 | DATAINFOWIDTH |
| GHWPARAMS1_11_9 | REQINFOWIDTH |
| GHWPARAMS1_14_12 | ASPACEWIDTH |
| GHWPARAMS1_20_15 | Number of Device Mode Event Buffers |
| GHWPARAMS1_22_21 | Number of RAMs |
| GHWPARAMS1_23 | Synchronous Static RAM Type (0x1 = Single-Port RAM (SPRAM)) |
| GHWPARAMS1_25_24 | Power Optimization Mode (0x1 = Clock Gating Only) |
| GHWPARAMS1_26 | MAC_PHY_CLKS_SYNC |
| GHWPARAMS1_27 | MAC_RAM_CLKS_SYNC |
| GHWPARAMS1_28 | RAM_BUS_CLKS_SYNC |
| GHWPARAMS1_29 | Reserved. |
| GHWPARAMS1_30 | RM_OPT_FEATURES |
| GHWPARAMS1_31 | xHCI debug capability. |