h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 195

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

Bit
6
5
4
Bit Name
IRF
TCEIE
SDIR
0
0
0
Initial
Value
R/W
R/(W)*
R/W
R/W
2
Transfer Counter End Interrupt Enable
Single Address Direction
Description
Interrupt Request Flag
Flag indicating that an interrupt request has occurred
and transfer has ended.
To clear this bit, the DA bit in DMMDR is set to 1 or 0 is
written after reading 1 from this bit.
0: No interrupt request
[Clearing conditions]
•
•
1: Interrupt request occurrence
[Setting conditions]
•
•
•
Enables or disables transfer end interrupt requests by
the transfer counter. When transfer ends according to
the transfer counter while this bit is set to 1, the IRF bit
in DMMDR is set to 1, indicating that an interrupt
request has occurred.
0: Transfer end interrupt requests by transfer counter
1: Transfer end interrupt requests by transfer counter
Specifies the data transfer direction in single address
mode. In dual address mode (AMS = 0), the
specification by this bit is ignored.
0: Transfer direction: DMSAR → external device with
1: Transfer direction: External device with DACK →
are disabled
are enabled
DACK
DMDAR
Writing 1 to the DA bit in DMMDR
Writing 0 to IRF after reading IRF = 1
Transfer end interrupt request generated by transfer
counter
Source address repeat area overflow interrupt
request
Destination address repeat area overflow interrupt
request
Rev. 2.00, 03/04, page 163 of 534