HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 170
HD6412332
Manufacturer Part Number
HD6412332
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412332.pdf
(1244 pages)
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6.2.4
BCRH is an 8-bit readable/writable register that selects enabling or disabling of idle cycle
insertion, and the memory interface for areas 2 to 5 and area 0.
BCRH is initialized to H'D0 by a reset, and in hardware standby mode. It is not initialized in
software standby mode.
Bit 7—Idle Cycle Insert 1 (ICIS1): Selects whether or not one idle cycle state is to be inserted
between bus cycles when successive external read cycles are performed in different areas.
Bit 7
ICIS1
0
1
Bit 6—Idle Cycle Insert 0 (ICIS0): Selects whether or not one idle cycle state is to be inserted
between bus cycles when successive external read and external write cycles are performed .
Bit 6
ICIS0
0
1
Bit 5—Burst ROM Enable (BRSTRM): Selects whether area 0 is used as a burst ROM interface
area.
Bit 5
BRSTRM
0
1
Rev.4.00 Sep. 07, 2007 Page 140 of 1210
REJ09B0245-0400
Bit
Initial value :
R/W
Bus Control Register H (BCRH)
:
:
Description
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.
Description
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.
Description
Area 0 is basic bus interface area
Area 0 is burst ROM interface area
ICIS1
R/W
7
1
ICIS0
R/W
6
1
BRSTRM BRSTS1 BRSTS0 RMTS2
R/W
5
0
R/W
4
1
R/W
0
3
R/W
2
0
RMTS1
R/W
1
0
(Initial value)
(Initial value)
(Initial value)
RMTS0
R/W
0
0
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