Intel CW8064701487007 Datasheet download pdf (Page 92)

Signal Description

92 Datasheet, Volume 1

6.11 Power Sequencing Signals

Table 6-13. Power Sequencing Signals

Signal Name Description

Direction/

Buffer Type

SM_DRAMPWROK

SM_DRAMPWROK Processor Input: Connects to PCH

DRAMPWROK.

Asynchronous

CMOS

UNCOREPWRGOOD

The processor requires this input signal to be a clean indication

that the V

CCSA

, V

CCIO

, V

AXG

, and V

DDQ

, power supplies are

stable and within specifications. This requirement applies

regardless of the S-state of the processor. '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. This is connected

to the PCH PROCPWRGD signal.

Asynchronous

CMOS

SKTOCC# (rPGA only)

PROC_DETECT# (BGA)

SKTOCC# (Socket Occupied) / PROC_DETECT (Processor

Detect): This signal is pulled down directly (0 Ohms) on the

processor package to the ground. 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.

PROC_SELECT#

Processor Select: This signal is an output that indicates if the

processor used is 2nd Generation Intel

Core™ processor family

mobile or Mobile 3rd Generation Intel

Core™ processor family

/ Mobile Intel

Pentium

processor family / Mobile Intel

Celeron

processor family.

For 2nd Generation Intel

Core™ processor family mobile, the

output will be high.

For Mobile 3rd Generation Intel

Core™ processor family /

Mobile Intel

Pentium

processor family / Mobile Intel

Celeron

processor family, the output will be low.

VCCIO_SEL

Voltage selection for VCCIO: This output signal was initially

intended to select the I/O voltage depending on the processor

being used.

Since the V

CCIO

voltage is the same for 2nd Generation Intel

Core™ processor family mobile and Mobile 3rd Generation

Intel

Core™ processor family / Mobile Intel

Pentium

processor family / Mobile Intel

Celeron

processor family, the

usage of this signal was changed as follows: This signal should

not be used.

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