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Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
September 2006 DM
Order Number: 252480-006US 245
PCI Controller—Intel
®
IXP42X product line and IXC1100 control plane processors
Figure 49. Byte Lane Routing During AHB Memory Mapped Accesses of the PCI Bus –
AHB Configured as a Big-Endian Bus
31
24
Write,
pci_csr.ADS = 1
AHB Data
3
2
1
0
23
16
15
8
7
0
31
24
00 01
10
11
23
16
15
8
7
0
31
24
3 2
1
0
23
16
15
8
7
0
31
24
00 01
10
11
23
16
15
8
7
0
AHB Data
PCI Data PCI Data
Read,
pci_csr.ADS = 1
31
24
Write,
pci_csr.ADS = 0
AHB Data
3
2
1
0
23
16
15
8
7
0
31
24
00 01
10
11
23
16
15
8
7
0
31
24
3 2
1
0
23
16
15
8
7
0
31
24
00 01
10
11
23
16
15
8
7
0
AHB Data
PCI Data PCI Data
Read,
pci_csr.ADS = 0