SH7261 Datasheet, PDF (933/1348 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 20 IEBus^TM Controller (IEB) [R5S72612] [R5S72613]
20.3.4 IEBus Master Unit Address Register 1 (IEAR1)
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.
IEAR1 is initialized by a power-on reset or in deep standby.
Bit: 7
6
5
4
3
2
1
0
IARL4
IMD
— STE
Initial value: 0
0
0
0
0
0
0
0
R/W: R/W R/W R/W R/W R/W R/W R R/W
Initial
Bit
Bit Name Value R/W Description
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.
Rev. 2.00 Sep. 07, 2007 Page 901 of 1312
REJ09B0320-0200