H8SX1663 datasheet(206/1158 Pages) RENESAS

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Section 6 Bus Controller (BSC)

Rev.1.00 Jun. 07, 2006 Page 154 of 1102

REJ09B0294-0100

Bit

Bit Name

Initial

Value

R/W

Description

BSWD01

BSWD00

R/W

Area 0 Burst Word Number Select

Selects the number of words in burst access to the area

0 burst ROM interface

00: Up to 4 words (8 bytes)

01: Up to 8 words (16 bytes)

10: Up to 16 words (32 bytes)

11: Up to 32 words (64 bytes)

BSRM1

R/W

Area 1 Burst ROM Interface Select

Specifies the area 1 bus interface as a basic interface

or a burst ROM interface. To set this bit to 1, clear bit

BCSEL1 in SRAMCR to 0.

0: Basic bus interface or byte-control SRAM interface

1: Burst ROM interface

BSTS12

BSTS11

BSTS10

R/W

Area 1 Burst Cycle Select

Specifies the number of cycles of area 1 burst cycle

000: 1 cycle

001: 2 cycles

010: 3 cycles

011: 4 cycles

100: 5 cycles

101: 6 cycles

110: 7 cycles

111: 8 cycles

3, 2



All 0

Reserved

These are read-only bits and cannot be modified.

BSWD11

BSWD10

R/W

Area 1 Burst Word Number Select

Selects the number of words in burst access to the area

1 burst ROM interface

00: Up to 4 words (8 bytes)

01: Up to 8 words (16 bytes)

10: Up to 16 words (32 bytes)

11: Up to 32 words (64 bytes)

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