H8SSLASH2225 datasheet(598/1071 Pages) RENESAS

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Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]

Rev. 5.00 Aug 08, 2006 page 512 of 982

REJ09B0054-0500

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.

Bit

Bit Name

Initial

Value

R/W

Description

CMX

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

MRQ

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

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