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Bus Controller (BC)
8-28
8.8
Operation Clocks
MCLK, IOCLK, and SYSCLK are used as BC operation clocks. Table 8-8-1 shows the ratio of each clock versus
the oscillation input clock (OSCI).
Table 8-8-1
Frequency Ratios of BC Operation Clocks
Oscillation mode
Clock control register setting
SYSCLK
MCLK
IOCLK
CKSEL
PLL
mutiplier
mutiplier
mutiplier
MCK[1:0] = 10
4
1
H
Using
MCK[1:0] = 01
1
2
1/2
MCK[1:0] = 00
1
1/4
L
Not using
Not using
1/2
1/2
1/8
For details, refer to Chapter 6, “Clock Generator.”
8.9
Mode Settings
The values of external input pins MMOD1 to 0 and EXMOD1 to 0 set the external memory mode, block 0 bus
width, and separate/common mode for the address pins and data pins. The various mode settings that can be made
through the external pins are shown in Table 8-9-1.
Table 8-9-1
Mode Settings by the BC External Pins
Selection
Setting
Mode name
Address/data Block 0 bus width*
MMOD1
MMOD0
EXMOD1
EXMOD0
Separate
8 bits
L
H
L
L
Memory extension mode
16 bits
L
H
L
H
Common
8 bits
L
H
H
L
16 bits
L
H
H
H
Separate
8 bits
H
L
L
L
Processor mode
16 bits
H
L
L
H
Common
8 bits
H
L
H
L
16 bits
H
L
H
H
* Set the bus widths for blocks 1 to 3 through their respective memory control registers.
Summary of Contents for MN103001G/F01K
Page 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
Page 2: ......
Page 4: ......
Page 6: ......
Page 8: ......
Page 9: ...Table of Contents List of Figures and Tables 0 ...
Page 26: ...xviii ...
Page 27: ...1 0 1 General Specifications ...
Page 35: ...2 CPU 2 ...
Page 57: ...3 Extension Instruction Specifications 3 ...
Page 96: ...Extension Instruction Specifications 3 40 ...
Page 97: ...4 Memory Modes 3 4 ...
Page 102: ...Memory Modes 4 6 ...
Page 103: ...5 Operating Mode 5 ...
Page 107: ...6 Clock Generator 6 13 ...
Page 111: ...7 Internal Memory 7 ...
Page 114: ...Internal Memory 7 4 ...
Page 115: ...8 Bus Controller BC 8 ...
Page 189: ...9 Interrupt Controller 9 ...
Page 220: ...Interrupt Controller 9 32 ...
Page 221: ...10 8 bit Timers 9 10 ...
Page 254: ...8 bit Timers 10 34 ...
Page 255: ...11 16 bit Timers 11 ...
Page 292: ...16 bit Timers 11 38 ...
Page 293: ...12 Watchdog Timer 11 12 ...
Page 302: ...Watchdog Timer 12 10 ...
Page 303: ...13 Serial Interface 13 ...
Page 354: ...Serial Interface 13 52 ...
Page 355: ...14 A D Converter 14 ...
Page 367: ...15 I O Ports 15 ...
Page 431: ...16 Internal Flash Memory 16 ...
Page 439: ...17 17 Ordering Mask ROM ...
Page 442: ...Ordering Mask ROM 17 4 ...
Page 443: ...Appendix ...