HD6432646 Hitachi, HD6432646 Datasheet - Page 1040

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

BCRH—Bus Control Register H
1006
Bit
Initial value
Read/Write
ICIS1
Idle Cycle Insert 1
R/W
0
1
7
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
ICIS0
Idle Cycle Insert 0
R/W
0
1
6
1
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
BRSTRM
Burst ROM Enable
R/W
0
1
5
0
Area 0 is basic bus interface
Area 0 is burst ROM interface
BRSTS1
Burst Cycle Select 1
R/W
0
1
4
1
Burst cycle comprises 1 state
Burst cycle comprises 2 states
BRSTS0
H'FED4
Burst Cycle Select 0
R/W
0
1
3
0
Max. 4 words in burst access
Max. 8 words in burst access
R/W
—
2
0
R/W
—
1
0
Bus Controller
R/W
—
0
0