Intel Xeon X3450 BX80605X3450 Manual De Usuario
Los códigos de productos
BX80605X3450
Intel® Xeon® Processor 3400 Series Datasheet, Volume 1
55
Signal Description
6.10
Power Sequencing
6.11
Processor Core Power Signals
Table 6-12. Power Sequencing
Signal Name
Description
Direction
Type
SKTOCC#
SKTOCC# (Socket Occupied): This signal will be pulled to
ground on the processor package. There is no connection
to the processor silicon for this signal. System board
designers may use this signal to determine if the
processor is present.
O
SM_DRAMPWROK
SM_DRAMPWROK processor input: This signal connects to
PCH DRAMPWROK.
I
Asynch
CMOS
TAPPWRGOOD
Power good for ITP. Indicates to the ITP when the TAP can
be accessed.
O
Asynch
CMOS
VCCPWRGOOD_0
VCCPWRGOOD_1
VCCPWRGOOD_1
VCCPWRGOOD_0 and VCCPWRGOOD_1 (Power Good)
Processor Input: The processor requires these signals to
be a clean indication that VCC, VCCPLL, VTT, VAXG
supplies are stable and within their specifications and that
BCLK is stable and has been running for a minimum
number of cycles. These signals must then transition
monotonically to a high state. These signals can be driven
inactive at any time, but BCLK and power must again be
stable before a subsequent rising edge of
VCCPWRGOOD_0 and VCCPWRGOOD_1. These signals
should be tied together and connected to the CPUPWRGD
output signal of the PCH.
I
Asynch
CMOS
VTTPWRGOOD
The processor requires this input signal to be a clean
indication that the V
TT
power supply is stable and within
specifications. 'Clean' implies that the signal will remain
low (capable of sinking leakage current), without glitches,
from the time that the power supplies are turned on until
they come within specification. The signal must then
transition monotonically to a high state. Note that it is not
valid for VTTPWRGOOD to be deasserted while
VCCPWRGOOD_0 and VCCPWRGOOD_1 are asserted.
I
Asynch
CMOS
Table 6-13. Processor Core Power Signals (Sheet 1 of 2)
Signal Name
Description
Direction
Type
ISENSE
Current sense from VRD11.1 Compliant Regulator to the
processor core.
I
Analog
VCC
Processor core power supply. The voltage supplied to
these pins is determined by the VID pins.
PWR
VCC_NCTF
VCC/Non-Critical to Function: Pin for package
mechanical reliability.
PWR
VCC_SENSE
VCC_SENSE and VSS_SENSE provide an isolated, low
impedance connection to the processor core voltage
and ground. They can be used to sense or measure
voltage near the silicon.
Analog