SH7101 datasheet(123/486 Pages) RENESAS

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7. Bus State Controller (BSC)

Rev.2.00 Sep. 27, 2007 Page 89 of 448

REJ09B0394-0200

7.5

7.5.1

Bus Control Register 1 (BCR1)

BCR1 is a 16-bit readable/writable register that enables access to the MTU control registers.

Bit

Bit Name

Initial

Value

R/W

Description

⎯

Reserved

These bits are always read as 0 and should always be

written to 0.

⎯

Reserved

These bits are always read as 1 and should always be

written to 1.

MTURWE

R/W

MTU Read/Write Enable

This bit enables MTU control register access. For

details, refer to MTU section.

0: MTU control register access is disabled

1: MTU control register access is enabled

12 to 8

⎯

All 0

Reserved

These bits are always read as 0 and the write value

should always be 0.

7 to 4

⎯

All 0

Reserved

These bits are always read as 0 and the write value

should always be 0.

3 to 0

⎯

All 1

Reserved

These bits are always read as 1 and the write value

should always be 1.

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