Alternate Protocol Data 1 Register (APD1R) – Offset b18 - 001 - ID:795262 | Intel® Core™ Ultra Processors for H-series and U-series Platforms IOE-P I/O Registers

This is the Alternate Protocol Data 1 Register registers. Refer description for each individual field below for more details of the register functionality.

Bit Range	Default	Access	Field Name and Description
31:16	ffffh	RW/O	Alternate Protocol Vendor ID (APVID) This field contains the Vendor ID associated alternate protocol associated with the Alternate Protocol Index Select value. Bits 7:0 of this field contain bits 7:0 of Vendor ID (Symbol 10). Bits 15:8 of this field contain bits 15:8 of Vendor ID (Symbol 11). If Alternate Protocol Index Select is greater than or equal to Alternate Protocol Count, this field contains FFFFh. If Alternate Protocol Index Select is associated with a disabled alternate protocol, this field contains FFFFh.
15:5	0h	RW/O	Alternate Protocol Details (APD) This field contains the Alternate Protocol Details associated alternate protocol associated with the Alternate Protocol Index Select value. If Alternate Protocol Vendor ID is FFFFh, the value of this field is undefined.
4:3	0h	RO	Reserved
2:0	0h	RW/O	Alternate Protocol Usage Information (APUI) This field contains the Modified TS Usage Information associated alternate protocol associated with the Alternate Protocol Index Select value.

Alternate Protocol Data 2 Register (APD2R)

Alternate Protocol Control Register (APCTRLR) Alternate Protocol Data 2 Register (APD2R)