HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 174

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 6 Bus Controller
6.1.2
Figure 6.1 shows a block diagram of the bus controller.
Rev.3.00 Mar. 26, 2007 Page 132 of 772
REJ09B0355-0300
External bus control signals
CS0 to CS3
BREQ
BACK
BREQO
WAIT
Legend:
ABWCR: Bus width control register
ASTCR: Access state control register
WCRH:
WCRL:
BCRH:
BCRL:
Block Diagram
Wait control register H
Wait control register L
Bus control register H
Bus control register L
Figure 6.1 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