82NM10 Datasheet, PDF (56/671 Pages) Intel Corporation – Intel® NM10 Family Express Chipset

Signal Description
2.14 System Management Interface
Table 2-16.System Management Interface Signals
Name
Type
Description
INTRUDER#
SMLINK[1:0]
LINKALERT#
I
I/OD
I/OD
Intruder Detect: This signal can be set to disable the system if the
chasis is detected open. This signal’s status is readable, so it can be
used like a GPIO if the Intruder Detection is not needed.
System Management Link: These signals provide a SMBus link to
optional external system management ASIC or LAN controller.
External pull-ups are required. Note that SMLINK0 corresponds to an
SMBus clock signal, and SMLINK1 corresponds to an SMBus Data
signal.
SMLink Alert: This signal is an output of the integrated LAN and input
to either the integrated ASF or an external management controller in
order for the LAN’s SMLINK slave to be serviced.
2.15 Real Time Clock Interface
Table 2-17.Real Time Clock Interface
Name
Type
Description
RTCX1
RTCX2
Special
Special
Crystal Input 1: This signal is connected to the 32.768 kHz crystal.
If no external crystal is used, RTCX1 can be driven with the desired
clock rate.
Crystal Input 2: This signal is connected to the 32.768 kHz crystal.
If no external crystal is used, RTCX2 should be left floating.
2.16 Other Clocks
Table 2-18.Other Clocks
Name
Type
Description
CLK14
CLK48
SATA_CLKP
SATA_CLKN
DMI_CLKP,
DMI_CLKN
Oscillator Clock: This clock signal is used for the 8254 timers. It runs
I at 14.31818 MHz. This clock is permitted to stop during S3 (or lower)
states.
48 MHz Clock: This clock signal is used to run the USB controller. It
I runs at 48.000 MHz. This clock is permitted to stop during S3 (or lower)
states.
100 MHz Differential Clock: These signals are used to run the SATA
I controller at 100 MHz. This clock is permitted to stop during S3/S4/S5
states.
I
100 MHz Differential Clock: These signals are used to run the Direct
Media Interface. They run at 100 MHz.
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