DS07-16303-3E Datasheet, PDF (48/97 Pages) Fujitsu Component Limited. – 32-bit RISC Microcontroller CMOS FR30 Series

MB91121
7. Bit Search Module
The bit search module detects transitions of data (0 to 1/1 to 0) on the data written on the input registers and
returns locations of the transitions.
• Block diagram
Input latch
Address
decoder
Detection
mode
Single-detection data recovery
• Register configuration
Address
000003F0H
000003F1H
000003F2H
000003F3H
000003F4H
000003F5H
000003F6H
000003F7H
000003F8H
000003F9H
000003FAH
000003FBH
000003FCH
000003FEH
000003FDH
000003FFH
bit 31
( ) : Access
R/W : Readable and writable
R : Read only
W : Write only
X : Indeterminate
bit 16
BSD0
BSD1
BSDC
BSRR
48
Bit search circuit
Search result
Initial value
bit 0
X X X X X X X XB
X X X X X X X XB
X X X X X X X XB
(W)
X X X X X X X XB
X X X X X X X XB
X X X X X X X XB
X X X X X X X XB
(W)
X X X X X X X XB
X X X X X X X XB
X X X X X X X XB
X X X X X X X XB ^(W)
X X X X X X X XB
X X X X X X X XB
X X X X X X X XB
X X X X X X X XB
(W)
X X X X X X X XB