1006
BCRH—Bus Control Register H
H'FED4
Bus Controller
7
ICIS1
1
R/W
6
ICIS0
1
R/W
5
BRSTRM
0
R/W
4
BRSTS1
1
R/W
3
BRSTS0
0
R/W
0
—
0
R/W
2
—
0
R/W
1
—
0
R/W
Bit
Initial value
Read/Write
Burst Cycle Select 0
0
Max. 4 words in burst access
Max. 8 words in burst access
1
Burst Cycle Select 1
0
Burst cycle comprises 1 state
Burst cycle comprises 2 states
1
Burst ROM Enable
0
Area 0 is basic bus interface
Area 0 is burst ROM interface
1
Idle Cycle Insert 0
0
Idle cycle not inserted in case of successive external
read and external write cycles
Idle cycle inserted in case of successive external
read and external write cycles
1
0
1
Idle Cycle Insert 1
Idle cycle not inserted in case of successive external
read cycles in different areas
Idle cycle inserted in case of successive external
read cycles in different areas
Summary of Contents for H8S/2645
Page 4: ......
Page 16: ......
Page 58: ...26 ...
Page 110: ...78 ...
Page 120: ...88 ...
Page 132: ...100 ...
Page 160: ...128 ...
Page 172: ...140 ...
Page 418: ...386 ...
Page 444: ...412 ...
Page 530: ...498 ...
Page 562: ...530 ...
Page 642: ...610 ...
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Page 812: ...780 ...
Page 837: ...805 A 2 Instruction Codes Table A 2 shows the instruction codes ...
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