Bit Search Module Registers - Fujitsu FR60 Hardware Manual

CHAPTER 11 REALOS-RELATED HARDWARE
11.2.2

Bit Search Module Registers

This section describes the configuration and functions of the registers used by the bit
search module.
■ 0 Detection Data Register (BSD0)
0 detection is performed for the written data.
The configuration of the 0 detection data register (BSD0) is shown below.
000003F0
Read/write
Initial value
The initial value after a reset is undefined.
The read value is undefined.
Use a 32-bit length data transfer instruction for data transfer. (Do not use 8-bit or 16-bit length data transfer
instructions.)
■ 1 Detection Data Register (BSD1)
The configuration of the 1 detection data register (BSD1) is shown below.
000003F4
Read/write
Initial value
Use a 32-bit length data transfer instruction for data transfer. (Do not use 8-bit or 16-bit length data transfer
instructions.)
• Writing
1 detection is performed for the written data.
• Reading
Save data of the internal state for the bit search module is read. This register is used to save and restore
the original state when the bit search module is used by, for example, an interrupt handler.
Even though data is written to the 0 detection or change point detection data register, data can be saved
and restored only by using the 1 detection data register.
The initial value after a reset is undefined.
358
31
H
→ W
→ Undefined
31
H
→ R/W
→ Undefined
0
0