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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
31
(For the attributes, refer to
• 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.
390
(Access: Word)
H
BSRR
Indefinite
R
"Meaning of Bit Attribute Symbols (Page
0
No.10)".)
bit
Initial
value
Attribute
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