SH7263 Datasheet, PDF (1049/1862 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 20 IEBus^TM Controller (IEB)
(4) Broadcast Communications
In normal transfer, a single master unit communicates with a single slave unit, so one-to-one
transfer or reception takes place. In broadcast communications, a single master unit communicates
with multiple slave units. Since there are multiple slave units, no acknowledgements are returned
from the slave units during communications.
A broadcast bit decides whether broadcast or normal communications is done. (For details of the
broadcast bit, see section 20.1.2 (1) (b), Broadcast Bit.
There are two types of broadcast communications.
(a) Group broadcast communications
Broadcast communications is aimed at units with the same group number, meaning that those units
have the same upper four bits of the communications address.
(b) General broadcast communications
Broadcast communications is aimed at all units regardless of group number.
Group broadcast and general broadcast communications are identified by a slave address. (For
details on the slave address, see section 20.1.2 (3), Slave Address Field.)
Rev. 2.00 Mar. 14, 2008 Page 1015 of 1824
REJ09B0290-0200