Port VC Control (PVCC) – Offset 28C - 1.3 - ID:767626 | 12th Generation Intel® Core™ Processor Datasheet Volume 2 of 2

Introduction
Processor Configuration Register Definitions and Address Ranges
D0:F0 Host Bridge and DRAM Controller - DMIBAR Registers
D0:F0 Host Bridge and DRAM Controller - GFXVTBAR Registers
D0:F0 Host Bridge and DRAM Controller - GTTMMADR Registers (part 1)
D0:F0 Host Bridge and DRAM Controller - GTTMMADR Registers (part 2)
D0:F0 Host Bridge and DRAM Controller - Host Bridge/DRAM Registers (part 1)
- Revision ID (RID_0_0_0_PCI)
D0:F0 Host Bridge and DRAM Controller - Host Bridge/DRAM Registers (part 2)
D0:F0 Host Bridge and DRAM Controller - MCHBAR Host Controller Registers (part 1)
- GFX VT Range Base Address Register (GFXVTBAR_0_0_0_MCHBAR_NCU)
- VT DMI PEG VC0 Range Base Address Register (VTDPVC0BAR_0_0_0_MCHBAR_NCU)
D0:F0 Host Bridge and DRAM Controller - MCHBAR Host Controller Registers (part 2)
D0:F0 Host Bridge and DRAM Controller - MCHBAR Memory Controller Registers (part 2)
D0:F0 Host Bridge and DRAM Controller - MCHBAR Memory Controller Registers (part 3)
D0:F0 Host Bridge and DRAM Controller - MCHBAR Memory Controller Registers (part 4)
D0:F0 Host Bridge and DRAM Controller - MCHBAR Memory Controller Registers (part 5)
D0:F0 Host Bridge and DRAM Controller - MCHBAR Power Management Registers (part 1)
D0:F0 Host Bridge and DRAM Controller - MCHBAR Power Management Registers (part 2)
D0:F0 Host Bridge and DRAM Controller - PXPEPBAR PCI Express Egress Port Registers
D0:F0 Host Bridge and DRAM Controller - VTDPVC0BAR Registers
D1:F0-1 PCI Express* Controller Registers
D10:F0 Platform Monitoring Technology (PMT) Registers
D14:F0 Volume Management Device
D14:F0 Volume Management Device MEMBAR2 Registers
D2:F0 Processor Graphics
D4:F0 Dynamic Tuning Technology Registers
D6:F0 PCI Express* Controller Registers
D8:F0 Gauss Newton Algorithm Registers

Port VC Control (PVCC) – Offset 28C

Port VC Control

Bit Range	Default	Access	Field Name and Description
15:4	0h	RO	Reserved
3:1	0x0	RW	VC Arbitration Select (VCAS) Used by software to configure the VC arbitration by selecting one of the supported VC Arbitration schemes indicated by the VC Arbitration Capability field in the Port VC Capability register 2. The permissible values of this field are numbers corresponding to one of the asserted bits in the VC Arbitration Capability field. This field cannot be modified when more than one VC in the LPVC group is enabled.
0	0x0	WO	Load VC Arbitration Table (LVCAT) Used by software to update the VC Arbitration Table. This bit is valid when the selected VC Arbitration uses the VC Arbitration Table. Software Sets this bit to request hardware to apply new values programmed into VC Arbitration Table - Clearing this bit has no effect. Software checks the VC Arbitration Table Status bit to confirm that new values stored in the VC Arbitration Table are latched by the VC arbitration logic. This bit always returns 0b when read.

Bit Range

Default

Access

Field Name and Description

15:4

Reserved

3:1

0x0

VC Arbitration Select (VCAS)

Used by software to configure the VC arbitration by selecting one of the supported VC Arbitration schemes indicated by the VC Arbitration Capability field in the
Port VC Capability register 2.
The permissible values of this field are numbers corresponding to one of the asserted bits in the VC Arbitration Capability field. This field cannot be modified when more than one VC in the LPVC group is enabled.

0x0

Load VC Arbitration Table (LVCAT)

Used by software to update the VC Arbitration Table. This bit is valid when the selected VC
Arbitration uses the VC Arbitration Table.
Software Sets this bit to request hardware to apply new values programmed into VC Arbitration Table - Clearing this bit has no effect. Software checks the VC Arbitration Table Status bit to confirm that new values stored in the VC Arbitration Table are latched by the VC arbitration logic.
This bit always returns 0b when read.

Port VC Status (PVCS)

Port VC Capability 2 (PVCC2) Port VC Status (PVCS)