Intel BX80569Q9550 - Core 2 Quad 2.83 GHz Processor Datasheet page 165

Signal Definitions
Table 7-1. Signal Definitions for the Intel
Itanium
Name
VCCA
VCCCACHE
VCCCACHESENSE/
VSSCACHESENSE
VCCCORE
VCCCORESENSE/
VSSCORESENSE
VCCUNCORE
VCCUNCORESENSE/
VSSUNCORESENSE
VCCUNCOREREADY
VCCIO
VCCIO_FBD
VFUSERM
VID_VCCCORE[6:0]
VID_VCCUNCORE[6:0]
VID_VCCCACHE[5:0]
VR_FAN_N
VR_PROCTYPE[1:0]
VR_THERMALERT_N
® ®
Intel Itanium Processor 9300 Series and 9500 Series Datasheet
®
9500 Series (Sheet 7 of 8)
Type
I VCCA provides a +1.8 V isolated power supply to the analog portion of the internal
PLL's. Refer to the Intel
Processor 9500 Series Platform Design Guide for routing/decoupling
recommendations for VCCA.
I This provides power to the Cache on the Intel
This is on the top of the package and is driven by the Ararat Voltage Regulator.
Actual value of the voltage is determined by the settings of VID_VCCCACHE[5:0].
Remote sense lines used by the Ararat Voltage Regulator to sense VCCCACHE die
voltage. The Voltage Regulator should not draw more than 0.1mA from these pads.
I This provides power to the Cores on the processor. This is on the top of the package
and is driven by the Ararat Voltage Regulator. Actual value of the voltage is
determined by the settings of VID_VCCCORE[6:0].
Remote sense lines used by the Ararat Voltage Regulator to sense VCCCORE die
voltage. The Voltage Regulator should not draw more than 0.1mA from these pads.
I This provides power to the Uncore on the processor. This is on the top of the
package and is driven by the Ararat Voltage Regulator. Actual value of the voltage is
determined by the settings of VID_VCCUNCORE[6:0].
Remote sense lines used by the Ararat Voltage Regulator to sense VCCUNCORE die
voltage. The Voltage Regulator should not draw more than 0.1mA from these pads.
I This signal is sent to the processor from the Ararat. When high, the VCCUNCORE
rail has completed its startup sequence and is at a nominal operating voltage.
I VCCIO provides power to the input/output interface on the processor die.
I VCCIO_FBD provides power to the FBD_DIMM input/output interface on the
processor die.
I This pin must be tied to VCCIO or connected to VCCIO via 0 ohm resistor.
O VCCCORE_VID, VCCUNCORE_VID and VID_VCCCACHE (Voltage ID) pads are used
to support automatic selection of VCCCORE, VCCUNCORE and VCCCACHE by the
® Itanium
Intel
VCCCACHE Voltage Regulator (Ararat) outputs must be disabled prior to these pins
becoming invalid. The VID pins are needed to support processor voltage
specification variations. The VCCCORE, VCCUNCORE and VCCCACHE Voltage
Regulator (Ararat) outputs must supply the voltage that is requested by these pins,
or disable itself.
I/O This signal is open drain/collector driven by Ararat Voltage Regulator into a pad at
the top of the processor package and out through a pin at the bottom of the
processor package. When asserted, it indicates that the temperature on the Ararat
solution is approximately 10% below the VR_THERMTRIP_N limit. The Processor
cores do not monitor or respond to this signal. The Platform could monitor this pin
to implement thermal management, such as controlling fan speed (airflow). See
Ararat 170W Voltage Regulator Module Design Guide and /or Ararat II Voltage
Regulator Module Design Guidefor platform-specific requirements.
O VR_PROCTYPE output informs the Ararat Voltage Regulator the processor type.
These pins are '00 on Intel
®
Itanium 9500 Processor Series. These pads are located at the top of the package.
Future processors may use different bit configurations for this bus.
I /O This signal is open drain/collector driven by Ararat Voltage Regulator into a pad at
the top of the processor package and out through a pin at the bottom of the
processor package. When asserted, it indicates that the temperature on the Ararat
solution is about to exceed the VR_THERMTRIP_N limit. When enabled in the
processor, this signal causes the processor to enter a throttling state to reduce the
power consumption level. The Platform could monitor this pin to implement thermal
management. See Ararat 170W Voltage Regulator Module Design Guide and/or
Ararat II Voltage Regulator Module Design Guide for platform requirements on
driving this signal.
® Itanium ® Processor 9300 Series and Intel
Description
® ®
Itanium Processor 9300 Series and Intel
® 9300 Processor Series. The VCCCORE, VCCUNCORE and
® Itanium ® 9300 Processor Series, and '01 for the Intel
®
Itanium
® ®
Itanium 9300 Processor Series.
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