Electrical Specifications
64
Intel
®
Itanium
®
Processor 9300 Series and 9500 Series Datasheet
For reliable operation, always terminate unused inputs or bi-directional signals to their
respective deasserted states. A resistor must be used when tying bi-directional signals
to power or ground, also allowing for system testability. Unused pins of Intel
®
QuickPath Interconnect and FB-DIMM ports may be left as no-connects since
termination is provided on the processor silicon.
Unused outputs may be terminated on the system board or left connected. Note that
leaving unused outputs unterminated may interfere with some Test Access Port (TAP)
functions, complicate debug probing, and prevent boundary scan testing. Signal
termination for these signal types is discussed in latest revisions of
Intel
®
Itanium
®
Processor 9300 Series and Intel
®
Itanium
®
Processor 9500 Series Platform Design
Guide
.
Debug pins have ODT and can be left as no-connects. Their routing guidelines are
provided in the
Intel
®
Itanium
®
Processor 9300 Series and Intel
®
Itanium
®
Processor
9500 Series Platform Design Guide
.
2.10
Mixing Processors
Intel will support mixing CPUs in the same system or hard partition as defined below. A
hard partition is a smaller system capable of booting an OS, consisting of one or more
processors, memory and I/O controller hubs that are formed by domain partitioning.
1. CPUs from adjacent steppings. For example if one cpu is from stepping N, and
another cpu is from the next stepping, N+1, then CPU
N
and CPU
N+1
are compatible.
Similarly CPU
N
is not compatible with CPU
N+2
.
2. All CPUs in the system or hard partition must have the same core clock speed or
speed range and the same cache size.
3. All Intel
®
QPI links must have the same data rate, except for Intel
®
QPI links which
are disabled or in slow mode.
Additionally, for the Intel
®
Itanium
®
Processor 9300 Series:
4. If variable frequency mode (VFM) is enabled in one CPU it must be enabled in all
CPUs. If VFM mode is disabled in one CPU it must be disabled in all CPUs.
5. Mixing an enabled VFM part with an fixed frequency mode (FFM) part within the
same system or hard partition.
2.11
Supported Power-up Voltage Sequence
The supported order of voltage sequencing for the processor, detailed in
and
, is VCC33_SM, VccArarat(12V), VCCA, VCCIO,
VCCUNCORE and VCCCORE for the Intel
®
Itanium
®
Processor 9500 Series processor
and followed by VCCCACHE for the Intel
®
Itanium
®
Processor 9300 Series processor. If
customers need to apply VccArarat(12V) before VCC33_SM, the processor will not
sustain damage. The application of VCC33_SM before VccArarat(12V) allows the PIROM
to be read before the processor is powered.
Once started, the power up sequence must complete within 1000 ms, as defined by the
time limit for PWRGOOD to be asserted. VCC33_SM is brought up first to allow
platforms to read the socket Processor Information data and the PROCTYPE pin.
VccArarat (12V) is the input voltage to the Ararat regulator. The VCCA supply is used to
power the processor’s analog circuits. VCCIO is used to power the I/O circuits. Once
VCCIO is up and stable the external environment can generate the SYSINT clock
signals. Once the SYSINT clocks are valid, the external environment can assert the
Summary of Contents for BX80569Q9550 - Core 2 Quad 2.83 GHz Processor
Page 10: ...Introduction 10 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 22: ...Introduction 22 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 72: ...Electrical Specifications 72 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 118: ...Pin Listing 118 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 132: ...Mechanical Specifications 132 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 142: ...Thermal Specifications 142 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 170: ...170 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...