Renesas R5S72622 User Manual

 

Section 21   IEBus

TM

 Controller 

R01UH0134EJ0400  Rev. 4.00  

 

Page 1109 of 2108 

Sep 24, 2014 

 

 

 
SH7262 Group, SH7264 Group 

IEAR1 sets the lower four bits of the master unit address and communications mode. In master 
communications, the master unit address becomes the master address field value. In slave 
communications, the master unit address is compared with the received slave address field. 

7

6

5

4

3

2

1

0

0

0

0

0

0

0

0

0

R/W

R/W

R/W

R/W

R/W

R/W

R

R/W

Bit:

Initial value:

R/W:

IARL4

IMD

-

STE

 

 

7 to 4 

IARL4 

0000 

R/W 

Lower 4 Bits of IEBus Master Unit Address 

Set the lower 4 bits of the master unit address. This 
register becomes the master address field value. In 
slave communications, the master unit address is 
compared with the received slave address field. 

3, 2 

IMD 

00 

R/W 

IEBus Communications Mode 

Set IEBus communications mode. 

00: Communications mode 0 

01: Communications mode 1 

10: Communications mode 2 

11: Setting prohibited 

1 

 0 

R 

Reserved 

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

0 

STE 

0 

R/W 

Slave Transmission Setting 

Sets bit 4 in the slave status register. Transmitting the 
slave status register informs the master unit that the 
slave transmission enabled state is entered by setting 
this bit to 1. Note that this bit only sets the slave status 
register value and does not directly affect slave 
transmission. 

0: Bit 4 in the slave status register is 0 (slave 

transmission stop state) 

1: Bit 4 in the slave status register is 1 (slave 

transmission enabled state)