Datasheet

Intel
®
Xeon
®
Processor E7-2800/4800/8800 v2 Product Family 75
Datasheet Volume Two: Functional Description, February 2014
Registers Overview and Configuration Process
Table 12-1. Functions specifically handled by the processor (Sheet 1 of 3)
Register Group DID Device Function Comment
DMI2 E00h 0 0 x4 Link from Processor to PCH
PCI Express Root Port in DMI2
Mode
E01h 0 0
Device 0 will work as a x4 PCI Express
Port
PCI Express Root Port 2
E04h,
E05h,
E06h,
E07h
2
0,
1,
2,
3
x16, x8 or x4 max link width
PCI Express Root Port 3
E08h,
E09h,
E0Ah,
E0Bh
3
0,
1,
2,
3
x16, x8 or x4 max link width
IIO Core E28h 5 0
Address Map, VTd_Misc, System
Management
IIO Core E29h 5 1 Hot Plug
IIO Core E2Ah 5 2 RAS, Control Status and Global Errors
IIO Core E2Ch 5 4 I/O APIC
PCI Express DFx
E10h,
E13h,
E17h
6
0,
3,
7
PCI Express DFx
PCI Express* DFx
E18h,
E1Ch
7
0,
4
PCI Express DFx
Intel
®
Quick Data DMA
E20h,
E21h,
E22h,
E23h,
E24h,
E25h,
E26h,
E27h
4
0,
1,
2,
3,
4,
5,
6,
7
DMA Channel 0
DMA Channel 1
DMA Channel 2
DMA Channel 3
DMA Channel 4
DMA Channel 5
DMA Channel 6
DMA Channel 7
Intel
®
Quick Data DMA
E2Eh,
E2Fh
4
0,
1
RAID 5/6
Intel
®
QPI Link 0 E80h 8 0 Intel
®
QPI Link 0 General Registers
Intel
®
QPI Link 1 E90h 9 0 Intel
®
QPI Link 1 General Registers
Intel
®
QPI Link 2 E40h 24 0 Intel
®
QPI Link 2 General Registers
Intel
®
QPI Link 0 PMON E32h 8 2
Intel
®
QPI Link 0 Performance
Monitoring
Intel
®
QPI Link 1 PMON E33h 9 2
Intel
®
QPI Link 1 Performance
Monitoring
Intel
®
QPI Link 2 PMON E3Ah 24 2
Intel
®
QPI Link 2 Performance
Monitoring
Intel
®
QPI Link 0 REUT
E83h,
E84h,
E85h
8
3,
4,
5
Intel
®
QPI Link 0 REUT
Intel
®
QPI Link 1 REUT
E93h,
E94h,
E95h
9
3,
4,
5
Intel
®
QPI Link 1 REUT
Intel
®
QPI Link 2 REUT
E43h,
E44h,
E45h
24
3,
4,
5
Intel
®
QPI Link 2 REUT
Intel
®
QPI Link 0 &1 DFX E87h 8 7 Intel
®
QPI Link 0 & 1 DFX
Intel
®
QPI Link 2 DFX E47h 24 7 Intel
®
QPI Link 2 DFX