r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 422

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

11. Local Bus State Controller (LBSC)
Table 11.10 8-Bit External Device/Big-Endian Access and Data Alignment
Note:
Rev.1.00 Jan. 10, 2008 Page 392 of 1658
REJ09B0261-0100
Access
Size
Byte
Word
Longword
32 Bytes*
Operation
*
This table shows an example when the access start address is on the 32-byte
boundary. When the start address is not on the 32-byte boundary, accesses are
performed up to immediately before the 32-byte boundary and the address is wrapped
around to the previous 32-byte boundary.
2n + 1
4n + 3
…
Address
n
2n
4n
4n + 1
4n + 2
8n
8n + 1
8n + 2
8n + 31
No.
1
1
2
1
2
3
4
1
2
3
…
32
D31 to
D24
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
…
⎯
D23 to
D16
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
…
⎯
Data Bus
D15 to
D8
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
…
⎯
D7 to
D0
Data
7 to 0
Data
15 to 8
Data
7 to 0
Data
31 to 24
Data
23 to 16
Data
15 to 8
Data
7 to 0
Data 7
to 0
Data 15
to 8
Data 23
to 16
…
Data
255 to
248
WE3
…
WE2
…
Strobe Signals
WE1
…
Asserted
Asserted
Asserted
Asserted
Asserted
Asserted
Asserted
Asserted
Asserted
Asserted
…
Asserted
WE0