H8S2258 Datasheet, PDF (598/1071 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]
14.3.17 IEBus General Flag Register (IEFLG)
IEFLG indicates the IEB command execution status, lock status and slave address match, and
broadcast reception detection. This register cannot be modified.
Initial
Bit Bit Name Value R/W Description
7 CMX
0
R
Command Execution Status
Indicates the command execution status.
1: A command is being executed
[Setting condition]
When a master communications request or slave transmit
request command is issued while the MRQ, SRQ, or SRE
flag is set to 1
0: A command execution is completed
[Clearing condition]
When a command execution has been completed
6 MRQ
0
R
Master Communications Request
Indicates whether or not the unit is in communications
request state as a master unit.
1: The unit is in communications request state as a master
unit
[Setting condition]
When the CMX flag is cleared to 0 after the master
communications request command is issued
0: The unit is not in communications request status as a
master unit
[Clearing condition]
When the master communications have been completed
Rev. 5.00 Aug 08, 2006 page 512 of 982
REJ09B0054-0500