High Speed Configuration 2 (HSCFG2) – Offset a4 - 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

High Speed Configuration 2 (HSCFG2) – Offset a4

Bit Range	Default	Access	Field Name and Description
31:19	0h	RO	Rsvd1 (RSVD1) Rsvd1
18	0h	RW	PORT1 Host Mode Override (PORT1_HOST_MODE_OVERRIDE) When set, this bit causes the Host_Device mux on port 1 to be forced into the Host mode.
17:16	0h	RW	eUSB2SEL (EUSB2SEL) The two bits are associate with USB2 ports 1 - bit 16 and 2 - bit 2 0: Port is mapped to USB2 1: Port is mapped to eUSB2
15	0h	RW	HS ASYNC Active IN Mask (HSAAIM) Determines if the Async Active will mask/ignore IN EP s. 0 HS ASYNC Active will include IN EP s. 1 HS ASYNC Active will mask/ignore IN EP s.
14	0h	RW	HS OUT ASYNC Active Polling EP Mask (HSOAAPEPM) Determines if the Async Active for OUT HS/FS/LS masks/ignores EP s that are polling/PINGing (HS) due to NAK. 0 HS OUT ASYNC Active will include EP s that are polling. 1 HS OUT ASYNC Active will mask/ignore EP s that are polling.
13	0h	RW	HS IN ASYNC Active Polling EP Mask (HSIAAPEPM) Determines if the Async Active for IN HS/FS/LS masks/ignores EP s that are polling due to NAK. 0 HS IN ASYNC Active will include EP s that are polling. 1 HS IN ASYNC Active will mask/ignore EP s that are polling.
12:11	3h	RW	HS INTR IN Periodic Active Policy Control (HSIIPAPC) Controls how the HS INTR IN periodic active is used to generate the global periodic active. This will determine how the smallest service interval among active EP s and number of active EP s are used. 0 HS INTR IN periodic active will be used to generate periodic active if Service Interval Threshold OR Numb of EP Threshold values meet the requirement. 1 HS INTR IN periodic active will be used to generate periodic active if Service Interval Threshold AND Numb of EP Threshold values meet the requirement. 2 Always allow HS INTR EP s to be used in the generation of the global Periodic Active indication. 3 Never allow HS INTR EP s to be used in the generation of the global Periodic Active indicaiton
10:4	0h	RW	HS INTR IN Periodic Active Num of EP Threshold (HSIIPANEPT) Defines the threshold used to determine if Periodic Acive may include HS/FS/LS INTR IN EP active indication. If there are more than NumEPThreshold active HS/FS/LS INTR EP s then they may be included as part of the periodic active generation.
3:0	0h	RW	HS INTR IN Periodic Active Service Interval Threshold (HSIIPASIT) Defines the Service Interval threshold used to determine if Periodic Acive will include HS/FS/LS INTR IN EP active indication. If there are any active HS/FS/LS INTR EP s with a service interval less than or equal to this threshold then they may be included as part of the periodic active generation.