h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 174
h8s-2646
Manufacturer Part Number
h8s-2646
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2646.pdf
(1165 pages)
- Current page: 174 of 1165
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Section 7 Bus Controller
7.2.4
BCRH is an 8-bit readable/writable register that selects enabling or disabling of idle cycle
insertion, and the memory interface for 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 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 .
Rev. 5.00 Sep 22, 2005 page 148 of 1136
REJ09B0257-0500
Bit 7
ICIS1
0
1
Bit 6
ICIS0
0
1
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
:
:
:
ICIS1
R/W
7
1
ICIS0
R/W
6
1
BRSTRM
R/W
5
0
BRSTS1
R/W
4
1
BRSTS0
R/W
3
0
R/W
—
2
0
R/W
—
1
0
(Initial value)
(Initial value)
R/W
—
0
0
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