Device Physical Endpoint-n Command (DEPCMD_0) – Offset c80c - 001 - ID:834576 | Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2

Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2

ID	Date	Version	Classification
834576	10/10/2024	001	Public

Device Physical Endpoint-n Command (DEPCMD_0) – Offset c80c

Bit Range	Default	Access	Field Name and Description
31:16	0h	RW	Command Parameters (COMMANDPARAM) When this register is written: For Start Transfer command: -[31:16]: StreamID. The USB StreamID assigned to this transfer For Start Transfer command applied to an isochronous endpoint: -[31:16]: StartMicroFramNum: Indicates the (micro)frame number to which the first TRB applies For Update Transfer, End Transfer, and Start New Configuration commands: -[22:16]: Transfer Resource Index (XferRscIdx). The hardware-assigned transfer resource index for the transfer, which was returned in response to the Start Transfer command. The application software-assigned transfer resource index for a Start New Configuration command
15:12	0h	RW	Command Completion Status (CMDSTATUS) Additional information about the completion of this command is available in this field.
11	0h	RW	HighPriority/ ForceRM (HIPRI_FORCERM) HighPriority: Only valid for Start Transfer command ForceRM: Only valid for End Transfer command ClearPendIN: Only valid for Clear Stall command – Software sets this bit to clear any pending IN transaction (on that endpoint) stuck at the lower layers when a Clear Stall command is issued.
10	0h	RW	Command Active (CMDACT) Software sets this bit to 1 to enable the device endpoint controller to execute the generic command.The device controller sets this bit to 0 when the CmdStatus field is valid and the endpoint is ready to accept another command. This does not imply that all the effects of the previously-issued command have taken place.
9	0h	RO	Reserved
8	0h	RW	Command Interrupt on Complete (CMDIOC) When this bit is set, the device controller issues a generic Endpoint Command Complete event after executing the command. Note that this interrupt is mapped to DEPCFG.IntrNum. When the DEPCFG command is executed, the command interrupt on completion goes to the interrupt pointed by the DEPCFG.IntrNum in the current command. Note: This field must not set to ‘1’ if the DCTL.RunStop field is ‘0’.
7:4	0h	RO	Reserved
3:0	0h	RW	Command Type (CMDTYP) Specifies the type of command the software driver is requesting the core to perform. 00h: Reserved 01h: Set Endpoint Configuration-64 or 96-bit Parameter 02h: Set Endpoint Transfer Resource Configuration-32-bit 03h: Get Endpoint State-No Parameter Needed 04h: Set Stall-No Parameter Needed 05h: Clear Stall (see Set Stall)-No Parameter Needed 06h: Start Transfer-64-bit Parameter 07h: Update Transfer-No Parameter Needed 08h: End Transfer-No Parameter Needed 09h: Start New Configuration-No Parameter Needed