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Bus Controller (BC)
8-12
~
~
~
~
~
~
Memory control register 1B
Register symbol: MEMCTR1B
Address:
x’32000022
Purpose:
Sets the bus mode, access timing, etc., for external memory space block 1.
Bit No.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit
B1
B1
B1
B1
B1
B1
B1
B1
B1
B1
–
B1
B1
B1
–
B1
name
WEN4WEN3WEN2WEN1WEN0 ASN2 ASN1 ASN0 ASA1 ASA0
BW
PE
BM
DRAM
Reset
1
1
1
0
1
0
1
1
0
1
0
1
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
R/W
R
R/W
When not using DRAM (Memory control register 1B B1DRAM = 0)
Bit No.
Bit name
Description
Setting conditions
0
DRAM
Block 1 DRAM
0: Do not use as DRAM space.
space setting
2
BM
Block 1 bus mode
0: Synchronous mode (SYSCLK synchronization)
1: Asynchronous mode (MCLK synchronization)
3
PE
Block 1 software page
Not using
mode enable
4
BW
Block 1 bus width
0:
8 bits
1:
16 bits
7 to 6
ASA1 to 0
AS assert timing
00:
0MCLK
11:
3MCLK
10 to 8
ASN2 to 0
AS negate timing
000:
prohibited
Set so that:
001:
1MCLK
ASN
≥
ASA
111:
7MCLK
15 to 11
WEN4 to 0
WE negate timing
Settings other than those shown below are prohibited.
Set so that:
00011:
3MCLK
WEN
≥
EA
11111:
31MCLK
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 ...