Vol 1
PIROM
166 Intel® Xeon® Product 2800/4800/8800 v2 Product Family
Datasheet Volume One, February 2014
28h 8 Core Voltage Tolerance, Low Allowable negative DC shift
Two 4-bit hex digits (mV)
15h = 15mV
1
29h 8 Reserved Reserved for future use 00h
Processor Uncore Data
2A-2Bh 16 Maximum Intel QPI Link Transfer
Rate
Four 4-bit hex digits (in MT/s) 8000h = 8.000 GT/s
1
2C-2Dh 16 Maximum PCIe Link Transfer Rate Four 4-bit hex digits (in MT/s) 8000h = 8.000 GT/s
1
2E-31h 32 Intel QPI Version Number Four 8-bit ASCII Characters 01.1
32h 7/1 TXT First seven bits reserved 00000001 = supported
00000000 = unsupported
33-34h 16 Maximum Intel
SMI2
Performance Transfer Rate
Four 4-bit hex digits (in MT/s) 2666h = 2.666GT/s
1
35-36h 16 Maximum Intel SMI2 Lock Step
Transfer Rate
Four 4-bit hex digits (in MT/s) 1600h = 1.600GT/s
1
37-38h 16 Maximum VSA VID Four 4-bit hex digits (mV) 1200h = 1200 mV
1
39-3Ah 16 Minimum VSA VID Four 4-bit hex digits (mV) 0600h = 600 mV
1
3B-3Eh 32 Reserved Reserved for future use 00000000h
3F-40h 16 L2 Cache Size Decimal (Kb) Per CPU Core 0100h = 256Kb
41-42h 16 L3 Cache Size Decimal (Kb) 6000h = 24576Kb, 4800h =
18432Kb, 3000h = 12288Kb
43-44 16 VVMSE Nominal Voltage Four 4-bit hex digits (mV) 1350h = 1350 mV
1
45-46h 16 VTT Nominal Voltage Four 4-bit hex digits (mV) 1000h = 1000 mV
1
47-4Bh 40 Reserved Reserved for future use 0000000000h
Package
4C-4Fh 32 Package Revision Four 8-bit ASCII characters 01.0
50h 6/2 Substrate Revision Software ID First 6 bits reserved 000000**
51-53h 24 Reserved Reserved for future use 000000h
Part Numbers
54-5Ah 56 Processor Family Number Seven 8-bit ASCII characters CM80636
5B-62h 64 Processor SKU Number Seven 8-bit ASCII characters 1272834
63-65h 24 Reserved Reserved for future use 000000h
Thermal Reference
66h 8 Recommended THERMALERT_N
assertion threshold value
MSB is Reserved 0h = 0C
1
67h 8 Thermal calibration offset value MSB is Reserved 0h = 0C
1
68h 8 T
CASE
Maximum Maximum case temperature
Two 4-bit hex digits (mV)
69h = 69°C
1
69-6Ah 16 Thermal Design Power Four 4-bit hex digits (in Watts) 0130h = 130 Watts
1
6Bh 8 Reserved Reserved for future use 00h
Features
6C-6Fh 32 Processor Core Feature Flags From CPUID function 1, EDX
contents
4387FBFFh
70h 8 Processor Feature Flags Eight features - Binary
1 indicates functional feature
10001101
71h 8 Additional Processor Feature
Flags
Eight additional features - Binary
1 indicates functional feature
01110101
72 6/2 Multiprocessor Support 00b = 2S, 01b = S2S, 10b =
S4S, 11b = S8S
00000011 = MP/SMS
73h 4/4 Number of Devices in TAP Chain Two 4-bit hex digit - Bits 16h
1
74-75h 16 Reserved Reserved for future use 0000h
Offset/
Section
# of
Bits
Function Notes Examples