Intel X3470 BV80605001905AJ User Manual

Datasheet, Volume 1

57

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_0 and VCCPWRGOOD_1 (Power Good) 

Processor Input: The processor requires these signals to 

be a clean indication that V

CC

, V

CCPLL

, V

TT

, V

AXG

 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 de-asserted while 

VCCPWRGOOD_0 and VCCPWRGOOD_1 are asserted.

I

Asynch 

CMOS

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