SH7785 Datasheet, PDF (668/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

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