Renesas SH7781 User Manual
Page 667
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13. PCI Controller (PCIC)
Rev.1.00 Jan. 10, 2008 Page 637 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
A
B
C
PCI_Addr[2] = 1
PCI_Addr[2] = 0
31
0
SHwy data
PCI bus data
2. Big endian
A
B
C D A' B' C' D'
A
B
C
PCI_Addr[2] = 0
PCI_Addr[2] = 1
Note: PCIAddr[2]: PCI
bus
AD[2]
D
Buffer data
Buffer data
D
C D
MSB
LSB
A
B
C D A' B' C' D'
D
Figure 13.7 Endian Conversion from SuperHyway Bus to PCI Bus
(Non-Byte Swapping: TBS = 0)
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