MUX1
System address
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Address mapping
b1 b0
Memory address
10 9
8
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
MUX4
MUX2
System address
System address
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Address mapping
Address mapping
b1 b0
b1 b0
Memory address
Memory address
11 10 9
8
7
6
5
4
3
2
1
0
8 7
6
5
4
3
2
1
0
11 10 9
8
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
MUX5
MUX3
System address
System address
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Address mapping
Address mapping
b1 b0
b1 b0
Memory address
Memory address
11 10 9
8
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
10 9
8
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
MUX6
System address
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Address mapping
b1 b0
Memory address
11 10 9
8
7
6
5
4
3
2
1
0
9 8
7
6
5
4
3
2
1
0
MUX7
MUX8
System address
System address
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Address mapping
Address mapping
b1 b0
b1 b0
Memory address
Memory address
12 11 10 9
8
7
6
5
4
3
2
1
0
8
7
6
5
4
3
2
1
0
11 10 9
8
7
6
5
4
3
2
1
0
8
7
6
5
4
3
2
1
0
12−bit row [11:0]
8−
8−
bit column [7:0]
bit column [7:0]
12−
12−
bit row address [11:0]
9
bit row address [11:0]
9
−
−
bit column address [8:0]
bit column address [8:0]
12−
11−
bit row [11:0]
bit row [10:0]
10−bit column [9:0]
9−
9−
bit column [8:0]
bit column [8:0]
8−bit column address [7:0]
11−bit row address [10:0]
13−
12−
bit row [12:0]
bit row [11:0]
sdrc-004
Public Version
www.ti.com
SDRAM Controller (SDRC) Subsystem
Figure 10-44. SDRC SDR/DDR-SDRAM System Address Multiplexing Schemes (1 of 3)
2231
SWPU177N – December 2009 – Revised November 2010
Memory Subsystem
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