Renesas R5S72644 User Manual

 
Section 21   IEBus

TM

 Controller 

Page 1106 of 2108 

 

R01UH0134EJ0400  Rev. 4.00 

 

 Sep 

24, 

2014 

SH7262 Group, SH7264 Group

2 to 0 

CMD 

000 

W 

Command 

These bits issue a command to control 
communications. When the CMX flag in IEFLG is set 
after the command issuance, the command is indicated 
to be in execution. When the CMX flag becomes 0, the 
operation state is entered. 

000: No operation. Operation is not affected. 

001: Unlock (required from other units)*

1

 

010: Requires communications as the master 

011: Stops master communications*

2

 

100: Undefined bits*

4

 

101: Requires data transfer from the slave 

110: Stops data transfer from the slave*

3

 

111: Undefined bits*

4

 

Notes:  1.  Do not execute this command in slave communications. 

 

2.  This command is valid during master communications (MRQ = 1). In other states, this 

command issuance is ignored. If this command is issued in master communications, the 
communications controller immediately enters the wait state. At this time, the issued 
master transmission request ends (MRQ = 0). 

 

3.  This command is valid during slave communications (SRQ = 1). In other states, this 

command issuance is ignored. Once this command is issued in slave transmission, the 
SRQ flag is 0 before slave transmission. Therefore, a transmit request from the master 
is not responded to. If a transmit request is issued during slave transmission, the 
transmission stops and the wait state is entered (SRQ = 0). 

 

4.  Undefined bits. Issuing this command does not affect operation.