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Bus Controller (BC)
8-3
8.3
Bus Configuration
Fig. 8-3-1 shows the bus configuration. The chip’s internal buses are the ROM bus between the CPU core and
internal instruction ROM/internal flash memory, the RAM bus between the CPU core and internal data RAM, the
BC bus between the CPU core and the bus controller, and the I/O bus between the bus controller and internal I/O.
The EX bus is an external bus.
Table 8-3-1 lists the characteristics of each bus.
Fig. 8-3-1 Bus Configuration Diagram
Table 8-3-1 Characteristics of Each Bus
Bus name
Blocks
Data bus width
Operating clock
ROM bus
CPU - internal instruction ROM/
64
MCLK
(*1)
internal flash memory
RAM bus
CPU - internal data RAM
32
MCLK
(*1)
BC bus
CPU - BC
32
MCLK
(*1)
I/O bus
BC - internal I/O
32
IOCLK
(*1)
[synchronous mode]
EX bus
BC - external memory
8/16
(*2)
SYSCLK
(*1)
[synchronous mode]
(external bus)
MCLK
(*1)
[asynchronous mode]
(*1)
For a description of the operation clock, refer to section 8.8, “Operation Clock.”
(*2)
Set by the external input pin or control register.
8.4
Block Diagram
Fig. 8-4-1 shows the block diagram for the bus controller. The bus controller consists of a controller, a store buffer,
a CPU interface (BC bus I/F), an interface for internal I/O circuitry (I/O bus I/F) and an external device interface
(EX bus I/F).
Address bus
Data bus
External
memory
I/O bus
32
CPU core
Bus controller
BC bus
32
Internal I/O
(peripherals)
32
24
EX bus
8/16
RAM bus
32
Internal
Data RAM
(8 KB)
DRAM I/F
Store buffer
External memory
interface
ROM bus
64
Internal
instruction ROM
(128 KB)/Internal
flash memory
(256 KB)
Содержание MN103001G/F01K
Страница 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
Страница 2: ......
Страница 4: ......
Страница 6: ......
Страница 7: ...14 A D Converter 15 I O Ports 16 Internal Flash Memory 17 Ordering Mask ROM Appendix 14 15 16 17 ...
Страница 8: ......
Страница 9: ...Table of Contents List of Figures and Tables 0 ...
Страница 26: ...xviii ...
Страница 27: ...1 0 1 General Specifications ...
Страница 35: ...2 CPU 2 ...
Страница 57: ...3 Extension Instruction Specifications 3 ...
Страница 96: ...Extension Instruction Specifications 3 40 ...
Страница 97: ...4 Memory Modes 3 4 ...
Страница 102: ...Memory Modes 4 6 ...
Страница 103: ...5 Operating Mode 5 ...
Страница 107: ...6 Clock Generator 6 13 ...
Страница 111: ...7 Internal Memory 7 ...
Страница 114: ...Internal Memory 7 4 ...
Страница 115: ...8 Bus Controller BC 8 ...
Страница 189: ...9 Interrupt Controller 9 ...
Страница 220: ...Interrupt Controller 9 32 ...
Страница 221: ...10 8 bit Timers 9 10 ...
Страница 254: ...8 bit Timers 10 34 ...
Страница 255: ...11 16 bit Timers 11 ...
Страница 292: ...16 bit Timers 11 38 ...
Страница 293: ...12 Watchdog Timer 11 12 ...
Страница 302: ...Watchdog Timer 12 10 ...
Страница 303: ...13 Serial Interface 13 ...
Страница 354: ...Serial Interface 13 52 ...
Страница 355: ...14 A D Converter 14 ...
Страница 367: ...15 I O Ports 15 ...
Страница 431: ...16 Internal Flash Memory 16 ...
Страница 439: ...17 17 Ordering Mask ROM ...
Страница 442: ...Ordering Mask ROM 17 4 ...
Страница 443: ...Appendix ...