SH7751 Datasheet, PDF (1062/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. PCI Controller (PCIC)
Target memory read transfers (local bus → PCI bus) when local bus is big endian
Size
Local bus
PCI bus
BE
31
0
LW
B0 B1 B2 B3
31
0
B3 B2 B1 B0
H'0 to H'F
Target memory write transfers (local bus ← PCI bus) when local bus is big endian
Size
Local bus
PCI bus
BE
31
0
B
B0
31
0
B0
1110
B
B1
B1
1101
B
B2
B2
1011
B
B3
B3
0111
W
B0 B1
B1 B0
1100
W
B2 B3
B3 B2
0011
B+B
B0
+
B2
B2 B0
1010
B+B
B1
+
B3
B3 B1
0101
B+B
B0
+
B3
B3
B0
0110
B+B
B1
+
B2
B2 B1
1001
W+B
B0 B1
+
B2
B2 B1 B0
1000
W+B
B0 B1
+
B3
B3 B1 B0
0100
B+W
B0
+
B2 B3
B3 B2 B0
0010
B+W
B1
+
B2 B3
B3 B2 B1
0001
—
—
1111
LW
B0 B1 B2 B3
B3 B2 B1 B0
0000
Figure 22.21 (1) Data Alignment at Target Memory Transfer (Big-Endian Local Bus)
Rev.4.00 Oct. 10, 2008 Page 964 of 1122
REJ09B0370-0400