SH7706 Datasheet, PDF (248/749 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7700 Series

Section 8 Bus State Controller (BSC)
Table 8.14 32-Bit External Device/Little Endian Access and Data Alignment
Operation
Byte access at 0
Byte access at 1
Byte access at 2
Byte access at 3
Word access at 0
Word access at 2
Longword access
at 0
Data Bus
D31 to D23 to D15 to D7 to
D24
D16
D8
D0
—
—
—
Data
7 to 0
—
—
Data —
7 to 0
—
Data
—
—
7 to 0
Data
—
7 to 0
—
—
—
—
Data Data
15 to 8 7 to 0
Data
Data
—
—
15 to 8 7 to 0
Data
Data
Data Data
31 to 24 23 to 16 15 to 8 7 to 0
WE3,
DQMUU
Strobe Signals
WE2,
WE1,
DQMUL DQMLU
WE0,
DQMLL
Assert
Assert
Assert
Assert
Assert Assert
Assert Assert
Assert Assert Assert Assert
Table 8.15 16-Bit External Device/Little Endian Access and Data Alignment
Data Bus
Operation
D31 to D23 to D15 to D7 to WE3,
D24 D16 D8
D0
DQMUU
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 access at 0
—
—
Data
Data
15 to 8 7 to 0
Word access at 2
—
—
Data
Data
15 to 8 7 to 0
Longword
access
at 0
1st
—
time at 0
2nd
—
time at 2
—
Data
Data
15 to 8 7 to 0
—
Data
Data
31 to 24 23 to 16
Strobe Signals
WE2,
DQMUL
WE1,
DQMLU
Assert
Assert
Assert
Assert
Assert
Assert
WE0,
DQMLL
Assert
Assert
Assert
Assert
Assert
Assert
Rev. 5.00 May 29, 2006 page 200 of 698
REJ09B0146-0500