X9000 Datasheet, PDF (69/77 Pages) Intel Corporation – Core2 Duo Processor and Core2 Extreme Processor on 45-nm Process

Package Mechanical Specifications and Pin Information
Table 14.
Signal Description (Sheet 8 of 8)
Name
TMS
TRDY#
TRST#
V_CC
V_SS
V_CCA
V_CCP
V_{CC_SENSE}
VID[6:0]
V_{SS_SENSE}
Type
Input
Input
Input
Input
Input
Input
Input
Output
Output
Output
Description
TMS (Test Mode Select) is a JTAG specification support signal used
by debug tools.
TRDY# (Target Ready) is asserted by the target to indicate that it is
ready to receive a write or implicit writeback data transfer. TRDY#
must connect the appropriate pins of both FSB agents.
TRST# (Test Reset) resets the Test Access Port (TAP) logic. TRST#
must be driven low during power on Reset.
Processor core power supply.
Processor core ground node.
V_CCA provides isolated power for the internal processor core PLLs_.
Processor I/O Power Supply.
V_{CC_SENSE} together with V_{SS_SENSE} are voltage feedback signals to
Intel® MVP6 that control the 2.1-mΩ loadline at the processor die.
It should be used to sense voltage near the silicon with little noise.
Refer to the platform design guide for termination and routing
recommendations.
VID[6:0] (Voltage ID) pins are used to support automatic selection
of power supply voltages (V_CC). Unlike some previous generations
of processors, these are CMOS signals that are driven by the
processor. The voltage supply for these pins must be valid before
the VR can supply V_CC to the processor. Conversely, the VR output
must be disabled until the voltage supply for the VID pins becomes
valid. The VID pins are needed to support the processor voltage
specification variations. See Table 2 for definitions of these pins.
The VR must supply the voltage that is requested by the pins, or
disable itself.
V_{SS_SENSE} together with V_{CC_SENSE} are voltage feedback signals to
Intel MVP6 that control the 2.1-mΩ loadline at the processor die. It
should be used to sense ground near the silicon with little noise.
Refer to the platform design guide for termination and routing
recommendations.
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Datasheet
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