Intel® SRMK2 Internet Server Technical Product Specification
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PCIIRQ12
P2S2_INTAC# (PCI64 Slot2 Interrupts A & C)
PCIIRQ13
P2S2_INTBD# (PCI64 Slot2 Interrupts B & D)
PCIIRQ14
Not Used
PCIIRQ15
Not Used
3.16.3 SMI and NMI Routing
There are numerous SMI/NMI sources. SMI/NMI sources are routed either to OSB4 or SIO
GPI input pins. Software must configure the OSB4 and SIO GPI input pins to control whether the
corresponding events will generate SMI, NMI or wake up events to the processors. The
SMI/NMI sources on the SRMK2 are shown in Table 20. Note that some inputs are the wired
OR of several sources. Signal names are in parenthesis.
Table 20: SRMK2 SMI and NMI sources
SMI Source
OSB4 Input Pin
SIO Input Pin
Processor #0 IERR (IERR#0)
GEVENT_0
Processor #1 IERR (IERR#1)
GEVENT_1
Processor #0 Thermal Trip (THERMTRIP#0)
GEVENT_2
Processor #1 Thermal Trip (THERMTRIP#0)
GEVENT_3
CNB30LE Chipset PCI SERR# - used for ECC Errors (SALERT#)
GEVENT_4
Wired OR of HECETA #1 & #2 INT output and LAN 1 & 2 SMBALERT
output (SMBALERT#)
GEVENT_5
Gluechip’s EXTSMI# output – used for +5VSB errors (EXTSMI#)
GEVENT_6
Debug NMI from Front Panel or NMI jumper (DBG_NMI#)
GEVENT_7
SIO SMI (SIO_SMI#)
GEVENT_19
SIO WAKE UP (SIO_WAKEUP#)
SIO_WAKEUP
32-bit PCI SERR (P1_SERR#)
SERR#
64-bit PCI SERR (P2_SERR#)
FRWP#
GEVNT_21
Wired OR of 32-bit PCI PME, External WOL, LAN1 PME, and LAN2 PME
(P1_PME#)
GP17
64-bit PCI PME (P2_PME#)
GP16
Wake on Ring (WOR#)
GP11
3.16.4 System Management Bus (SMB)
The SRMK2 baseboard supports a simple I
2
C compatible Bus to provide a method to manage
system resources. To implement this feature, the ServerWorks South Bridge device becomes the
master controller and communicates with several other devices in the system. Some of the
functions the processor can monitor though the SMB bus are the following: Fan Speed
(Tachometer), temperatures, voltage rails, LAN controllers, DIMM presence and size. Table 21
shows the address map of the various devices on the SM Bus.
Table 21: SMB Bus Address Map
Device
Master/Slave
I
2
C Address
OSB4
Master Controller
N/A
LAN Controller 1
Slave
:84