Intel
®
Itanium
®
Processor 9300 Series and 9500 Series Datasheet
23
Electrical Specifications
2
Electrical Specifications
This chapter describes the electrical specifications of the Intel
®
Itanium
®
Processor
9300 Series and 9500 Series processors.
2.1
Intel
®
QuickPath Interconnect and Intel
®
Scalable Memory Interconnect
Differential Signaling
The links for Intel
®
QuickPath Interconnect (Intel
®
QPI) and Intel
®
Scalable Memory
Interconnect (Intel
®
SMI) signals use differential signaling. The Intel
®
SMI bus pins are
referred to as FB-DIMM pins on the package. The termination voltage level for the
processor for uni-directional serial differential links, each link consisting of a pair of
opposite-polarity (D+, D-) signals, is V
SS
.
Termination resistors are provided on the processor silicon and are terminated to V
SS,
thus eliminating the need to terminate the links on the system board for the Intel
®
QuickPath Interconnect and FB-DIMM signals.
When designing a system, Intel strongly recommends that design teams perform
analog simulations of the Intel
®
QuickPath Interconnect and FB-DIMM pins. Please
refer to the latest available revision of the
Intel
®
Itanium
®
Processor 9300 Series and
Intel
®
Itanium
®
Processor 9500 Series Platform Design Guide.
illustrates the active on-die termination (ODT) of these differential signals.
All the differential signals listed in
have ODT resistors. Also included in the
table are the debug signals.
Figure 2-1. Active ODT for a Differential Link Example
T
X
R
X
R
TT
R
TT
R
TT
R
TT
Signal
Signal
Содержание BX80569Q9550 - Core 2 Quad 2.83 GHz Processor
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Страница 118: ...Pin Listing 118 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Страница 132: ...Mechanical Specifications 132 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Страница 142: ...Thermal Specifications 142 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Страница 158: ...System Management Bus Interface 158 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
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