HD6432646 Hitachi, HD6432646 Datasheet - Page 176
HD6432646
Manufacturer Part Number
HD6432646
Description
(HD64F264x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432646.pdf
(1155 pages)
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7.1.2
Figure 7-1 shows a block diagram of the bus controller.
142
Block Diagram
External bus control signals
Legend:
ABWCR : Bus width control register
ASTCR
BCRH
BCRL
WCRH
WCRL
WAIT
: Access state control register
: Bus control register H
: Bus control register L
: Wait control register H
: Wait control register L
Figure 7-1 Block Diagram of Bus Controller
controller
Wait
Area decoder
Bus arbiter
controller
Bus
ABWCR
ASTCR
WCRH
WCRL
BCRH
BCRL
CPU bus request signal
DTC bus request signal
CPU bus acknowledge signal
DTC bus acknowledge signal
Internal control
signals
Bus mode signal
Internal
address bus
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