r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 420

• 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 11.8 32-Bit External Device/Big-Endian Access and Data Alignment
Note:
Rev.1.00 Jan. 10, 2008 Page 390 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.
4n + 3
4n + 2
…
Address
4n
4n + 1
4n + 2
4n
4n
8n
8n + 4
8n + 8
8n + 28
No.
1
1
1
1
1
1
1
1
2
3
…
8
D31 to
D24
Data
7 to 0
⎯
⎯
⎯
Data
15 to 8
⎯
Data
31 to 24
Data
31 to 24
Data
63 to 56
Data
95 to 88
…
Data
255 to
248
D23 to
D16
⎯
Data
7 to 0
⎯
⎯
Data
7 to 0
⎯
Data
23 to 16
Data
23 to 16
Data
55 to 48
Data
87 to 80
…
Data
247 to
240
Data Bus
D15 to
D8
⎯
⎯
Data
7 to 0
⎯
⎯
Data
15 to 8
Data
15 to 8
Data
15 to 8
Data
47 to 40
Data
79 to 72
…
Data
239 to
232
D7 to
D0
⎯
⎯
⎯
Data
7 to 0
⎯
Data
7 to 0
Data
7 to 0
Data
7 to 0
Data
39 to 32
Data
71 to 64
…
Data
231 to
224
WE3
Asserted
Asserted Asserted
Asserted Asserted Asserted Asserted
Asserted Asserted Asserted Asserted
Asserted Asserted Asserted Asserted
Asserted Asserted Asserted Asserted
…
Asserted Asserted Asserted Asserted
WE2
Asserted
…
Strobe Signals
WE1
Asserted
Asserted Asserted
…
Asserted
…
WE0