Datasheet

Section 6 Bus Controller (BSC)
Rev. 3.00 Sep. 28, 2009 Page 93 of 710
REJ09B0384-0300
Section 6 Bus Controller (BSC)
This LSI has an on-chip bus controller (BSC). The BSC has a bus arbitration function, and
controls the operation of the internal bus masters – CPU and data transfer controller (DTC).
6.1 Features
• Bus arbitration function
Includes a bus arbiter that arbitrates bus mastership between the CPU and DTC.
Bus
controller
Internal control signals
Internal data bus
Bus arbiter
DTC bus acknowledge signal
CPU bus acknowledge signal
DTC bus request signal
CPU bus request signal
Figure 6.1 Block Diagram of Bus Controller