Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
| ID | Date | Version | Classification |
|---|---|---|---|
| 615146 | 08/09/2019 | 1.2 | Public |
Command (HECI1_CMD) – Offset 4
Command
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 14:11 | - | - | Reserved
|
| 10 | 0b | RW | Interrupt Disable (ID) Disables this |
| 9 | 0b | RO | Fast Back-to-Back Enable (FBE) Not implemented, hardwired to 0. |
| 8 | 0b | RO | SERR# Enable (SEE) Not implemented, hardwired to 0. |
| 7 | 0b | RO | Wait Cycle Enable (WCC) Not implemented, hardwired to 0. |
| 6 | 0b | RO | Parity Error Response Enable (PEE) Not implemented, hardwired to 0. |
| 5 | 0b | RO | VGA Palette Snooping Enable (VAG) Not implemented, hardwired to 0. |
| 4 | 0b | RO | Memory Write And Invalidate Enable (MWIE) Not implemented, hardwired to 0. |
| 3 | 0b | RO | Special Cycle Enable (SCE) Not implemented, hardwired to 0. |
| 2 | 0b | RW | Bus Master Enable (BME) Controls the HECI host controller's ability to act as a system memory master for data transfers. When this bit is cleared, HECI bus master activity stops and any active DMA engines return to an idle condition. |
| 1 | 0b | RW | Memory Space Enable (MSE) Controls access to the HECI host controllers memory mapped register space. |
| 0 | 0b | RO | I/O Space Enable (IOSE) Not implemented, hardwired to 0. |