526
Bit
Initial value
Read/Write
7
BE
0
R/W
6
RCDM
0
R/W
5
DDS
0
R/W
4
EDDS
0
R/W
3
—
0
R/W
2
MXC2
0
R/W
1
MXC1
0
R/W
0
MXC0
0
R/W
Address Multiplex Select
0
8-bit shift
• When 8-bit access space is designated:
Row address bits A23 to A8 used for comparison
• When 16-bit access space is designated:
Row address bits A23 to A9 used for comparison
0
1
9-bit shift
• When 8-bit access space is designated:
Row address bits A23 to A9 used for comparison
• When 16-bit access space is designated:
Row address bits A23 to A10 used for comparison
10-bit shift
• When 8-bit access space is designated:
Row address bits A23 to A10 used for comparison
• When 16-bit access space is designated:
Row address bits A23 to A11 used for comparison
11-bit shift
• When 8-bit access space is designated:
Row address bits A23 to A11 used for comparison
• When 16-bit access space is designated:
Row address bits A23 to A12 used for comparison
Reserved (setting prohibited)
0
1
0
1
—
1
—
EXDMAC Single Address Transfer Option
0
Full access is always executed when EXDMAC single
address transfer is performed in DRAM space
1
Burst access is possible when EXDMAC single
address transfer is performed in DRAM space
DMAC Single Address Transfer Option
0
Full access is always executed when DMAC single
address transfer is performed in DRAM space
1
Burst access is possible when DMAC single address
transfer is performed in DRAM space
RAS
Down Mode
0
RAS
up mode selected for DRAM space access
1
RAS
down mode selected for DRAM space access
Burst Access Enable
0
Full access always used for DRAM space access
1
DRAM space access performed in fast page mode
Summary of Contents for H8S/2670
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