Intel® SRMK2 Internet Server Technical Product Specification
36
3.15 Fan Support
The backplane powers nine 40mm system fans. Additionally, it incorporates logic to control and
monitor the tachometer speed of fans. Eight of those fans are 40mm x 28mm. The ninth fan is
40mm x 17mm and provides cooling to the PCI add-in card area.
3.16 Baseboard Programming
3.16.1 PCI Configuration Space Map
Table 18: PCI Configuration Space Map
Bus
Number
(hex)
Device
Number
(hex)
Function
Number
(hex)
Description
00
00
00
CNB30LE Host Bridge Function 32 bit PCI (P1_AD[16])
00
00
01
CNB30LE 2
nd
Host Bridge Function 64 Bit PCI (P1_AD[16])
00
01
NA
PCI32 VIDEO (P1_AD[17])
00
02
NA
PCI32 SLOT1 (P1_AD[18])
00
03
NA
PCI32 SLOT2 (P1_AD[19])
00
05
NA
PCI32 LAN1 (P1_AD[23])
00
06
NA
PCI32 LAN2 (P1_AD[24])
00
0F
00
OSB4 SMB Bus, PCI Configuration Registers (P1_AD[31])
00
0F
01
OSB4 Ultra DMA IDE bus master (P1_AD[31])
01
02
NA
PCI64 SLOT1 (P2_AD[18])
01
03
NA
PCI 64 SLOT2 (P2_AD[19])
01
04
NA
PCI 64 SCSI (P2_AD[20])
3.16.2 Interrupts
Table 19 lists the system interrupts for the SRMK2.
Table 19: PCI Interrupt to OSB4 IRQ Input Mapping
OSB4 Input
PCI Interrupt
PCIIRQ0
LAN1 IRQ#
PCIIRQ1
LAN2 IRQ#
PCIIRQ2
P1S1_INTAC# (PCI32 Slot1 Interrupts A & C)
PCIIRQ3
P1S1_INTBD# (PCI32 Slot1 Interrupts B & D)
PCIIRQ4
P1S2_INTAC# (PCI32 Slot2 Interrupts A & C)
PCIIRQ5
P1S2_INTBD# (PCI32 Slot2 Interrupts B & D)
PCIIRQ6
FP_IRQ# (Front Panel IRQ#)
PCIIRQ7
VID_IRQ# (Video IRQ#)
PCIIRQ8
SCSI_IRQA#
PCIIRQ9
SCSI_IRQB#
PCIIRQ10
P2S1_INTAC# (PCI64 Slot1 Interrupts A & C)
PCIIRQ11
P2S1_INTBD# (PCI64 Slot1 Interrupts B & D)