Renesas SH7264 User Manual

 
Section 21   IEBus

TM

 Controller 

Page 1122 of 2108 

 

R01UH0134EJ0400  Rev. 4.00 

 

 Sep 

24, 

2014 

SH7262 Group, SH7264 Group

6 TXS  0 

R/(W)*

 Transmit Start 

Indicates that this module starts transmission. 

[Setting condition] 
  During master transmission, the arbitration is won 

and the master address field transmission is 
completed 

[Clearing condition] 
  When 1 is written 

5 TXF  0 

R/(W)*

 Transmit Normal Completion 

Indicates that data for the number of bytes specified by 
the message length bits has been transmitted with no 
error. 

[Setting condition] 
  When data for the number of bytes specified by the 

message length bits has been transmitted normally 

[Clearing condition] 
  When 1 is written 

4 

 0 

R 

Reserved 

This bit is always read as 0. The write value should 
always be 0. 

3 TXEAL 

0 

R/(W)* Arbitration 

Loss 

This module retransmits from the start bit for the 
number of times specified by the RN bit in IEMCR if the 
arbitration has been lost in master communications. If 
the arbitration has been lost for the specified number of 
times, the TXEAL is set to enter the wait state. If the 
arbitration has been won within retransmit for the 
specified number of times, this flag is not set to 1. This 
flag is set only when the arbitration has been lost and 
the wait state is entered. 

[Setting condition] 
  When the arbitration has been lost during data 

transmission and the transmission has been 
terminated 

[Clearing condition] 
  When 1 is written