HD6432351 datasheet(876/1025 Pages) RENESAS

876 / 1025 page

Appendix B Internal I/O Register

Rev. 3.00 Sep 15, 2006 page 842 of 988

REJ09B0330-0300

ABWCR—Bus Width Control Register

H'FED0

Bus Controller

ABW7

R/W

ABW6

R/W

ABW5

R/W

ABW4

R/W

ABW3

R/W

ABW0

R/W

ABW2

R/W

ABW1

R/W

Bit

Modes 1 to 3, 5 to 7

Initial value

R/W

Mode 4

Initial value

Read/Write

Area 7 to 0 Bus Width Control

Area n is designated for 16-bit access

Area n is designated for 8-bit access

Note: n = 7 to 0

ASTCR—Access State Control Register

H'FED1

Bus Controller

AST7

R/W

AST6

R/W

AST5

R/W

AST4

R/W

AST3

R/W

AST0

R/W

AST2

R/W

AST1

R/W

Bit

Initial value

Read/Write

Area 7 to 0 Access State Control

Area n is designated for 2-state access

Wait state insertion in area n external space is disabled

Area n is designated for 3-state access

Wait state insertion in area n external space is enabled

Note: n = 7 to 0

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