Intel LF80550KF100007 Data Sheet

Page of 128
Electrical Specifications
28
Dual-Core Intel® Xeon® Processor 7100 Series Datasheet
2.10
Processor DC Specifications
The following notes apply:
• The processor DC specifications in this section are defined at the processor core 
silicon and not at the package pins unless noted otherwise.
• The notes associated with each parameter are part of the specification for that 
parameter.
• Unless otherwise noted, all specifications in the tables apply to all frequencies and 
cache sizes.
• Unless otherwise noted, all the specifications in the tables are based on estimates 
and simulations. These specifications will be updated with characterized data from 
silicon measurements at a later date.
See 
 for the pin signal definitions. Most of the signals on the processor front 
side bus are in the AGTL+ signal group. The DC specifications for these signals are 
listed in 
.
 through 
 list the DC specifications for the Dual-Core Intel® 
Xeon® Processor 7100 Series processor and are valid only while meeting specifications 
for case temperature, clock frequency, and input voltages.
2.10.1
Flexible Motherboard (FMB) Guidelines
The FMB guidelines are estimates of the maximum values that the Dual-Core Intel Xeon 
processor 7100 series processor will have over certain time periods. The values are 
only estimates as actual specifications for future processors may differ. The Dual-Core 
Intel Xeon processor 7100 series may or may not have specifications equal to the FMB 
value in the foreseeable future. System designers should meet the FMB values to 
ensure that their systems will be compatible with future releases of the Dual-Core Intel 
Xeon processor 7100 series.
Table 2-10. Voltage and Current Specifications (Sheet 1 of 2)
Symbol
Parameter
Core 
Freq
Min
Typ
Max
VID
Unit
Notes
VID Range
V
CC
 for processor core
All freq
Refer to 
1.1000 - 
1.3500
V
1,2,3,
4,5,7
VID Transition
VID step size during 
transition
All freq.
± 12.5
mV
18
Total allowable DC load line 
shift from VID steps
All freq.
450
mV
19
CVID Range
V
CC
 for processor L3 cache
All freq.
Refer to 
1.1000 -
1.3500
V
17
V
TT
FSB termination voltage 
(DC specification)
All freq.
1.176
1.20
1.224
V
11,12,
13
V
TT
FSB termination voltage 
(AC specification)
All freq.
1.140
1.20
1.260
V
11,12,
13,14
SM_VCC
SMBus supply voltage
All freq.
3.135
3.300
3.465
V
13
I
CC
I
CC
 for processor core
All freq
135
A
7,10
I
CC_TDC
Core Thermal Design 
Current (TDC)
All freq
115
A
20
I
CACHE
I
CC
 for processor L3 cache
All freq
40
A