FUJITSU MB91F109 FR30 - Manual (Page 316)

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CHAPTER 13 BIT SEARCH MODULE
13.1 Overview of the Bit Search Module
The bit search module searches the data written to the input register for 0, 1, or a change
point, and returns the detected bit position.
■ Bit Search Module Registers
Figure 13.1-1 shows the bit search module registers.
Figure 13.1-1 Bit Search Module Registers
■ Block Diagram of Bit Search Module
Figure 13.1-2 is a block diagram of the bit search module.
Figure 13.1-2 Block Diagram of the Bit Search Module
31 0
Address: 000003F0
H
Address: 000003F4
H
Address: 000003F8
H
Address: 000003FC
H
BSD0
BSD1
BSDC
BSRR
0-detection data register
1-detection data register
Detection result register
Change-point detection data register
D-BUS
Input latch
Address
decoder
Detection
mode
Bit search circuit
Search result
1-detection data