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Bus Controller (BC)
8-16
When using fixed wait mode and not using DRAM
(Memory control register 2B B2DRAM = 0, B2WM = 0)
Bit No.
Bit name
Description
Setting conditions
0
DRAM
Block 2 DRAM
0: Do not use as DRAM space.
space setting
1
WM
Block 2 wait mode
0: fixed wait mode
2
BM
Block 2 bus mode
0: Synchronous mode (SYSCLK synchronization)
1: Asynchronous mode (MCLK synchronization)
3
PE
Block 2 software page
Not using
mode enable
4
BW
Block 2 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
~
~
~
~
~
~
Memory control register 2B
Register symbol: MEMCTR2B
Address:
x’32000024
Purpose:
Sets the bus mode, access timing, etc., for external memory space block 2.
Bit No.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit
B2
B2
B2
B2
B2
B2
B2
B2
B2
B2
–
B2
B2
B2
B2
B2
name
WEN4WEN3WEN2WEN1WEN0 ASN2 ASN1 ASN0 ASA1 ASA0
BW
PE
BM
WM 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/W
R/W
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 ...