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H8S/2240 数据表(PDF) 174 Page - Renesas Technology Corp

部件名 H8S/2240
功能描述  Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
PDF  818 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8S/2240 数据表(HTML) 174 Page - Renesas Technology Corp

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



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