Rainbow Electronics AT91CAP9S250A - Manual (Page 132)

132
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
20.4.3 Fixed Priority Arbitration
This algorithm allows the Bus Matrix arbiters to dispatch the requests from different masters to
the same slave by using the fixed priority defined by the user. If two or more master’s requests
are active at the same time, the master with the highest priority number is serviced first. If two
or more master’s requests with the same priority are active at the same time, the master with
the highest number is serviced first.
For each slave, the priority of each master may be defined through the Priority Registers for
Slaves (MATRIX_PRAS and MATRIX_PRBS).