SH7670 Datasheet, PDF (246/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 7 Bus State Controller (BSC)
Table 7.7 8-Bit External Device Access and Data Alignment in Big Endian
Data Bus
Operation
D31 to D23 to D15 to
D24 D16 D8 D7 to D0
Byte access at 0



Data
7 to 0
Byte access at 1



Data
7 to 0
Byte access at 2



Data
7 to 0
Byte access at 3



Data
7 to 0
Word
1st time 

access at 0 at 0

Data
15 to 8
2nd time 

at 1

Data
7 to 0
Word
1st time 

access at 2 at 2

Data
15 to 8
2nd time 

at 3

Data
7 to 0
Longword 1st time 

access at 0 at 0

Data
31 to 24
2nd time 

at 1

Data
23 to 16
3rd time 

at 2

Data
15 to 8
4th time 

at 3

Data
7 to 0
WE3,
DQMUU












Strobe Signals
WE2,
DQMUL
WE1,
DQMLU
























WE0,
DQMLL
Assert
Assert
Assert
Assert
Assert
Assert
Assert
Assert
Assert
Assert
Assert
Assert
Rev. 1.00 Nov. 14, 2007 Page 220 of 1262
REJ09B0437-0100