Section 6
Bus Controller (BSC)
Rev.2.00 Jun. 28, 2007 Page 123 of 666
REJ09B0311-0200
A block diagram of the bus controller is shown in figure 6.1.
Address
selecter
Area decoder
Internal bus
control unit
Internal data bus
[Legend]
Internal bus
control signals
External bus
control unit
External bus
arbiter
Internal
bus
arbiter
CPU address bus
CS7
to
CS0
WAIT
BREQ
BACK
BREQO
DTC address bus
CPU bus mastership acknowledge signal
DTC bus mastership acknowledge signal
CPU bus mastership request signal
DTC bus mastership request signal
External bus
control signals
Control register
ABWCR
ASTCR
WTCRA
WTCRB
RDNCR
CSACR
IDLCR
BCR1
BCR2
ENDIANCR
SRAMCR
BROMCR
MPXCR
ABWCR:
ASTCR:
WTCRA:
WTCRB:
RDNCR:
CSACR:
Bus width control register
Access state control register
Wait control register A
Wait control register B
Read strobe timing control register
CS
assertion period control register
IDLCR:
BCR1:
BCR2:
ENDIANCR:
SRAMCR:
BROMCR:
MPXCR:
Idle control register
Bus control register 1
Bus control register 2
Endian control register
SRAM mode control register
Burst ROM interface control register
Address/data multiplexed I/O control register
Figure 6.1 Block Diagram of Bus Controller
Summary of Contents for H8SX/1650
Page 2: ...Rev 2 00 Jun 28 2007 Page ii of xxii...
Page 106: ...Section 4 Exception Handling Rev 2 00 Jun 28 2007 Page 84 of 666 REJ09B0311 0200...
Page 142: ...Section 5 Interrupt Controller Rev 2 00 Jun 28 2007 Page 120 of 666 REJ09B0311 0200...
Page 326: ...Section 8 I O Ports Rev 2 00 Jun 28 2007 Page 304 of 666 REJ09B0311 0200...
Page 470: ...Section 12 Watchdog Timer WDT Rev 2 00 Jun 28 2007 Page 448 of 666 REJ09B0311 0200...
Page 566: ...Section 14 A D Converter Rev 2 00 Jun 28 2007 Page 544 of 666 REJ09B0311 0200...
Page 574: ...Section 16 RAM Rev 2 00 Jun 28 2007 Page 552 of 666 REJ09B0311 0200...
Page 584: ...Section 17 Clock Pulse Generator Rev 2 00 Jun 28 2007 Page 562 of 666 REJ09B0311 0200...
Page 638: ...Section 19 List of Registers Rev 2 00 Jun 28 2007 Page 616 of 666 REJ09B0311 0200...
Page 668: ...Section 20 Electrical Characteristics Rev 2 00 Jun 28 2007 Page 646 of 666 REJ09B0311 0200...
Page 676: ...Appendix Rev 2 00 Jun 28 2007 Page 654 of 666 REJ09B0311 0200...
Page 688: ...Rev 2 00 Jun 28 2007 Page 666 of 666 REJ09B0311 0200...
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Page 692: ...H8SX 1650 Group Hardware Manual...