Digi NS9215 User Manual
Page 249
. . . . .
M E M O R Y C O N T R O L L E R
Dynamic Memory Configuration 0–3 registers
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249
Address mapping
for the Dynamic
Memory
Configuration
registers
The next table shows address mapping for the Dynamic Memory Configuration 0-3
registers. Address mappings that are not shown in the table are reserved.
[14]
[12]
[11:9]
[8:7]
Description
16-bit external bus high-performance address mapping (row, bank column)
0
0
000
00
16 Mb (2Mx8), 2 banks, row length=11, column length=9
0
0
000
01
16 Mb (1Mx16), 2 banks, row length=11, column length=8
0
0
001
00
64 Mb (8Mx80, 4 banks, row length=12, column length=9
0
0
001
01
64 Mb (4Mx16), 4 banks, row length=12, column length=8
0
0
010
00
128 Mb (16Mx8), 4 banks, row length=12, column length=10
0
0
010
01
128 Mb (8Mx16), 4 banks, row length=12, column length=9
0
0
011
00
256 Mb (32Mx8), 4 banks, row length=13, column length=10
0
0
011
01
256 Mb (16Mx16), 4 banks, row length=13, column length=9
0
0
100
00
512 Mb (64Mx8), 4 banks, row length=13, column length=11
0
0
100
01
512 Mb (32Mx16), 4 banks, row length=13, column length=10
16-bit external bus low-power SDRAM address mapping (bank, row, column)
0
1
000
00
16 Mb (2Mx8), 2 banks, row length=11, column length=9
0
1
000
01
16 Mb (1Mx16), 2 banks, row length=11, column length=8
0
1
001
00
64 Mb (8Mx8), 4 banks, row length 12, column length=9
0
1
001
01
64 Mb (4Mx16), 4 banks, row length=12, column length=8
0
1
010
00
128 Mb (16Mx8), 4 banks, row length=12, column length=10
0
1
010
01
128 Mb (8Mx16), 4 banks, row length=12, column length=9
0
1
011
00
256 Mb (32Mx8), 4 banks, row length=13, column length=10
0
1
011
01
256 Mb (16Mx16), 4 banks, row length=13, column length=9
0
1
100
00
512 Mb (64Mx8), 4 banks, row length=13, column length=11
0
1
100
01
512 Mb (32Mx16, 4 banks, row length=13, column length=10
32-bit extended bus high-performance address mapping (row, bank, column)
1
0
000
00
16 Mb (2Mx8), 2 banks, row length=11, column length=9
1
0
000
01
16 Mb (1Mx16), 2 banks, row length=11, column length=8
1
0
001
00
64 Mb (8Mx8), 4 banks, row length=12, column length=9
1
0
001
01
64 Mb (4Mx16), 4 banks, row length=12, column length=8
1
0
001
10
64 Mb (2Mx32), 4 banks, row length=11, column length=8
1
0
010
00
128 Mb (16Mx8), 4 banks, row length=12, column length=10
1
0
010
01
128 Mb (8Mx16), 4 banks, row length=12, column length=9
1
0
010
10
128 Mb (4Mx32), 4 banks, row length=12, column length=8
1
0
011
00
256 Mb (32Mx8), 4 banks, row length=13, column length=10