HD6432621 Hitachi, HD6432621 Datasheet - Page 970

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

BCRH—Bus Control Register H
926
Bit
Initial value
Read/Write
:
:
:
ICIS1
Idle cycle insert 1
R/W
0 Idle cycle not inserted in case of successive external read cycles
1
7
1
in different areas
Idle cycle inserted in case of successive external read cycles
in different areas
ICIS0
R/W
Idle cycle insert 0
0 Idle cycle not inserted in case of successive external read
1
6
1
and external write cycles
Idle cycle inserted in case of successive external read
and external write cycles
BRSTRM
R/W
Area 0 burst ROM enable
5
0
0 Basic bus interface
1
Burst ROM interface
BRSTS1
R/W
Burst cycle select 1
0 Burst cycle comprises 1 state
1
4
1
Burst cycle comprises 2 states
H'FED4
BRSTS0
Burst cycle select 0
R/W
0 Max. 4 words in burst access
1
3
0
Max. 8 words in burst access
R/W
—
2
0
R/W
—
1
0
Bus Controller
R/W
—
0
0