D12320VF25V Datasheet, PDF (174/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 6 Bus Controller
6.1.2 Block Diagram
Figure 6.1 shows a block diagram of the bus controller.
CS0 to CS7
Area decoder
External bus control signals
BREQ
BACK
BREQO
ABWCR
ASTCR
BCRH
BCRL
Bus
controller
Internal
address bus
Internal control
signals
Bus mode signal
WAIT
Wait
controller
WCRH
WCRL
Bus arbiter
CPU bus request signal
DTC bus request signal
CPU bus acknowledge signal
DTC bus acknowledge signal
Figure 6.1 Block Diagram of Bus Controller
Rev.7.00 Feb. 14, 2007 page 140 of 1108
REJ09B0089-0700