Datasheet

Datasheet 65
Package Mechanical Specifications and Pin Information
TEST1,
TEST2,
TEST3,
TEST4,
TEST5,
TEST6
TEST7
Input
Refer to the appropriate platform design guide for further TEST1,
TEST2, TEST3, TEST4, TEST5, TEST6 and TEST7 termination
requirements and implementation details.
THERMTRIP# Output
The processor protects itself from catastrophic overheating by use
of an internal thermal sensor. This sensor is set well above the
normal operating temperature to ensure that there are no false
trips. The processor will stop all execution when the junction
temperature exceeds approximately 125 °C. This is signalled to the
system by the THERMTRIP# (Thermal Trip) pin.
THRMDA Other Thermal Diode Anode.
THRMDA_2 Other Thermal Diode Anode of the second die.
THRMDC Other Thermal Diode Cathode.
THRMDC_2 Other Thermal Diode Cathode of the second die.
TMS Input
TMS (Test Mode Select) is a JTAG specification support signal used
by debug tools.
TRDY# Input
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# Input
TRST# (Test Reset) resets the Test Access Port (TAP) logic. TRST#
must be driven low during power on Reset.
VCC Input Processor core power supply.
VCCA Input VCCA provides isolated power for the internal processor core PLLs
.
VCCP Input Processor I/O Power Supply.
VCCSENSE Output
VCCSENSE together with VSSSENSE are voltage feedback signals
that control the 2.1 mΩ loadline at the processor die. It should be
used to sense voltage near the silicon with little noise.
VID[6:0] Output
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 3 for definitions of these pins.
The VR must supply the voltage that is requested by the pins, or
disable itself.
VSS Input Processor core ground node.
VSSSENSE Output
VSSSENSE
together with VCCSENSE are voltage feedback signals
that control the 2.1-mΩ loadline at the processor die. It should be
used to sense ground near the silicon with little noise.
Table 14. Signal Description (Sheet 9 of 9)
Name Type Description