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2 bsrr: detection result register – FUJITSU MB91460 SERIES FR60 User Manual

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Chapter 28 Bit Search

4.Register

4.2 BSRR: Detection Result Register

This register is used to read a bit search result.

• BSRR: Address 03FC

H

(Access: Word)

(For the attributes, refer to “

Meaning of Bit Attribute Symbols (Page No.10)

”.)

• Detection result for data written in the 0 detection register BSD0, the 1-detection register BSD1 and the

changing-position-detection register BSDC can be read. Data last written can be read. However, the type of
result cannot be identified: Information on 0 detection,1 detection or changing position detection is not
included.
A 0 can be read at detection position bit31(MSB), and continues reading 31 at detection position bit0(LSB)
by adding 1 at the next position toward bit0(LSB). A value of 32 is read when not detected.

• The detection result register is read-only, and a write operation is invalid.

31

0

bit

BSRR

Indefinite

Initial

value

R

Attribute