522
BROMCRH—Area 0 Burst ROM I/F Control Register
H'FECA
Bus Controller
BROMCRL—Area 1 Burst ROM I/F Control Register
H'FECB
Bus Controller
Bit
Initial value
Read/Write
BROMCRH
7
BSRM0
0
R/W
6
BSTS02
0
R/W
5
BSTS01
0
R/W
4
BSTS00
0
R/W
3
—
0
R/W
2
—
0
R/W
1
BSWD01
0
R/W
0
BSWD00
0
R/W
Bit
Initial value
Read/Write
BROMCRL
7
BSRM1
0
R/W
6
BSTS12
0
R/W
5
BSTS11
0
R/W
4
BSTS10
0
R/W
3
—
0
R/W
2
—
0
R/W
1
BSWD11
0
R/W
0
BSWD10
0
R/W
Burst Word Length Select
BSWDn1
0
1
BSWDn0
0
1
0
1
Description
Maximum 4 words in area n burst access
Maximum 8 words in area n burst access
Maximum 16 words in area n burst access
Maximum 32 words in area n burst access
Burst Cycle Select
BSTSn1
0
1
0
1
BSTSn0
0
1
0
1
0
1
0
1
Description
Area n burst cycle comprises 1 state
Area n burst cycle comprises 2 states
Area n burst cycle comprises 3 states
Area n burst cycle comprises 4 states
Area n burst cycle comprises 5 states
Area n burst cycle comprises 6 states
Area n burst cycle comprises 7 states
Area n burst cycle comprises 8 states
BSTSn2
0
1
(n = 1 or 0)
(n = 1 or 0)
Burst ROM Interface Select
0
Area n is basic bus interface space
BSRMn
Description
1
Area n is burst ROM interface space
Содержание H8S/2670
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