Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2
| ID | Date | Version | Classification |
|---|---|---|---|
| 834576 | 10/10/2024 | 001 | Public |
USB Command (USBCMD) – Offset 80
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:15 | 0h | RO | Rsvd3 (RSVD3) Reserved |
| 14 | 0h | RW | Extended TCB Enable (ETE) This flag indicates that the host controller implementation is enabled to support Transfer Burst Count values greater than 4 in Isoch TDs. |
| 13 | 0h | RW | CEM Enable (CEM) Default = '0'. when set to '1', a Max Exit Latency Too Large Capability Error may be returned by a Configure Endpoint Command. |
| 12 | 0h | RO | Rsvd2 (RSVD2) Reserved |
| 11 | 0h | RW | Enable U3 MFINDEX Stop (EU3S) Enable U3 MFINDEX Stop |
| 10 | 0h | RW | Enable Wrap Event (EWE) Enable Wrap Event |
| 9 | 0h | RW | Controller Restore State (CRS) Controller Restore State |
| 8 | 0h | RW | Controller Save State (CSS) Controller Save State |
| 7 | 0h | RW | Light Host Controller Reset (LHCRST) Light Host Controller Reset |
| 6:4 | 0h | RO | Rsvd1 (RSVD1) Reserved |
| 3 | 0h | RW | Host System Error Enable (HSEE) Host System Error Enable |
| 2 | 0h | RW | Interrupter Enable (INTE) Interrupter Enable |
| 1 | 0h | RW | Host Controller Reset (HCRST) Host Controller Reset |
| 0 | 0h | RW | Run/Stop Host Controller (RS) Run/Stop |