Intel
®
Core™ 2 Duo Processor and Intel
®
Core™ Duo Processor with Intel
®
E7520 Chipset Development Kit
January 2007
User’s Manual
Order Number: 316068-001US
35
Intel
®
Core™ 2 Duo Processor and Intel
®
Core™ Duo Processor with Intel
®
E7520 Chipset
Development Kit
3.3.17
Platform IRQ Routing
Figure 20
shows how the Intel
®
6300ESB ICH uses these segments:
• IRQ 14 and 15 for IDE segment
• SERIRQ for SIOPIXRQ segment
• PCRIRQ for the PCI-X segment
• PIRQ for the PCI 32/33 segment
Figure 20. IRQ Routing Diagram
PXH
0
1
2
3
0
1
2
3
4
5
6
7
A B C D
PA
IR
Q
PB
IR
Q
REQ/GNT: 0
PCI- X Slot
A B C D
REQ/GNT: 0
PCI- X Slot
PCI- X Slot
P
C
I-
X
64/
13
3
PC
I-
X
2
.0
P
C
I-
X6
4/
1
00
ICH
A
B
C
D
E
F
G
H
A
B
C
D
A B C D
A
PI
R
Q
PX
IR
Q
REQ/GNT: 0
PCI Slot
REQ/GNT: 1
Video
A B C D
REQ/GNT: 0
PCI- X Slot
A B C D
REQ/GNT: 1
PCI- X Slot
PC
I-
X
6
4
/6
6
PC
I
3
2
/3
3
SERIRQ
SIO
MCH
NM
I
SM
I
PCI-E
4x
PC
I-
E
PC
I-
E
PC
I-
E
MSI
PCI-E
8x
HI
HI
PC
I-
E
MS
I
MSI
MS
I
MS
I
MS
I
MI
MS
I
4x
PC
I-
E
MS
I
CPU0
SM
I
NM
I
F
SB
MS
I
IRQ14/15
IDE
MSI
PXH
0
1
2
3
0
1
2
3
4
5
6
7
A B C D
PA
IR
Q
PB
IR
Q
REQ/GNT: 0
PCI- X Slot
A B C D
REQ/GNT: 0
PCI- X Slot
IDSEL: AD18
PCI- X Slot
P
C
I-
X
64/
13
3
PC
I-
X
2
.0
P
C
I-
X6
4/
1
00
ICH
A
B
C
D
E
F
G
H
A
B
C
D
A B C D
A
PI
R
Q
PX
IR
Q
PXH
0
1
2
3
0
1
2
3
4
5
6
7
A B C D
PA
IR
Q
PB
IR
Q
IDSEL: AD17
REQ/GNT: 0
PCI -
X Slot
A B C D
IDSEL: AD17
REQ/GNT: 0
PCI -X Slot
A B C D
IDSEL: AD18
REQ/GNT: 1
PCI -X Slot
P
C
I-
X
64/
13
3
PC
I-
X
2
.0
P
C
I-
X6
4/
1
00
ICH
A
B
C
D
E
F
G
H
A
B
C
D
A B C D
A
PI
R
Q
PX
IR
Q
REQ/GNT: 0
PCI Slot
REQ/GNT: 1
Video
A B C D
REQ/GNT: 0
PCI- X Slot
A B C D
REQ/GNT: 1
PCI- X Slot
PC
I-
X
6
4
/6
6
PC
I
3
2
/3
3
SERIRQ
SIO
MCH
NM
I
SM
I
PCI-E
4x
PC
I-
E
PC
I-
E
PC
I-
E
MSI
PCI-E
8x
HI
HI
PC
I-
E
MS
I
MSI
MS
I
MS
I
MS
IDSEL: AD16
REQ/GNT: 0
PCI Slot
IDSEL: AD17
REQ/GNT: 1
Video
A B C D
IDSEL: AD17
REQ/GNT: 0
PCI -X Slot
A B C D
IDSEL: AD18
REQ/GNT: 1
PCI -
X Slot
PC
I-
X
6
4
/6
6
PC
I
3
2
/3
3
SERIRQ
SIO
MCH
NM
I
SM
I
PCI-E
4x
FS B
PC
I-
E
PC
I-
E
PC
I-
E
MSI
PCI-E
8x
HI
HI
PC
I-
E
MS
I
MSI
MS
I
MS
I
MS
I
MI
MS
I
Dual Northway
4x
PC
I-
E
MS
I
CPU
SM
I
NM
I
F
SB
MS
I
NM
I
IRQ14/15
IDE
MSI
SM
I