Renesas SH7781 - Manual (Page 668)

13. PCI Controller (PCIC)
Rev.1.00 Jan. 10, 2008 Page 638 of 1658
REJ09B0261-0100
MSB
31 0
LSB
SHwy data
PCI bus data
1. Little endian
A' B' C' D' A B C
A' B' C' D' A B C
D
D
A B C D
PCI_Addr[2] = 1
PCI_Addr[2] = 0
MSB
31 0
LSB
SHwy data
PCI bus data
2. Big endian
D C B A D' C' B' A'
A B C D A' B' C' D'
A B C
PCI_Addr[2] = 1
PCI_Addr[2] = 0
Note: PCIAddr[2]: PCI bus AD[2]
D
Buffer data
Buffer data
Figure 13.8 Endian Conversion from SuperHyway Bus to PCI Local Bus
(Byte Swapping: TBS = 1)