SIGMA DE2-70 - Manual (Page 61)

DE2-70 User Manual
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DRAM0_A3
DRAM0_A0
DRAM0_A2
DRAM0_A1
DRAM0_A10
DRAM_D5
DRAM_D0
DRAM_D7
DRAM_D6
DRAM_D3
DRAM_D2
DRAM_D4
DRAM_D1
DRAM1_A3
DRAM1_A0
DRAM1_A2
DRAM1_A1
DRAM1_A10
DRAM_D21
DRAM_D16
DRAM_D23
DRAM_D22
DRAM_D19
DRAM_D18
DRAM_D20
DRAM_D17
DRAM1_A12
DRAM1_A5
DRAM1_A7
DRAM1_A6
DRAM1_A8
DRAM1_A11
DRAM1_A4
DRAM1_A9
DRAM_D24
DRAM_D31
DRAM_D27
DRAM_D25
DRAM_D26
DRAM_D29
DRAM_D30
DRAM_D28 DRAM0_A12
DRAM0_A5
DRAM0_A7
DRAM0_A6
DRAM0_A8
DRAM0_A11
DRAM0_A4
DRAM0_A9
DRAM_D8
DRAM_D15
DRAM_D11
DRAM_D9
DRAM_D10
DRAM_D13
DRAM_D14
DRAM_D12
DRAM0_CKE
DRAM0_CAS_n
DRAM0_RAS_n
DRAM0_CS_n
DRAM1_CKE
DRAM1_CAS_n
DRAM1_RAS_n
DRAM1_CS_n
DRAM1_WE_n
DRAM0_WE_n
DRAM_D[0..31]
DRAM0_A[0..12]
DRAM0_L DQM0
DRAM0_UDQM1
DRAM0_CLK
DRAM0_CKE
DRAM0_BA0
DRAM0_BA1
DRAM0_WE_n
DRAM0_CAS_n
DRAM0_ RAS_n
DRAM0_CS_n
DRAM1_L DQM0
DRAM1_UDQM1
DRAM1_CLK
DRAM1_CKE
DRAM1_BA0
DRAM1_BA1
DRAM1_WE_n
DRAM1_CAS_n
DRAM1_RAS_n
DRAM1_CS_n
DRAM1_A[0..12]
DR_VCC33
DR_VCC33 DR_VCC33
SDRAM0 SDRAM1
U2
SDRAM 16Mx16
U2
SDRAM 16Mx16
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
A8
33
A9
34
nCAS
17
nRAS
18
LDQM
15
nW E
16
nCS
19
CKE
37
CLK
38
UDQM
39
D0
2
D1
4
D2
5
D3
7
D4
8
D5
10
D6
11
D7
13
D8
42
D9
44
D10
45
D11
47
D12
48
D13
50
D14
51
D15
53
A12
36
BA0
20
VD
D
1
VD
D
27
VS
S
28
VS
S
41
A10
22
VD
D
Q
3
VD
D
Q
9
VD
D
Q
43
VD
D
Q
49
VS
S
Q
6
VS
S
Q
12
VSS
Q
46
VSS
Q
52
A11
35
BA1
21
VS
S
54
VD
D
14
R1 4.7K R1 4.7K
U1
SDRAM 16Mx16
U1
SDRAM 16Mx16
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
A8
33
A9
34
nCAS
17
nRAS
18
LDQM
15
nW E
16
nCS
19
CKE
37
CLK
38
UDQM
39
D0
2
D1
4
D2
5
D3
7
D4
8
D5
10
D6
11
D7
13
D8
42
D9
44
D10
45
D11
47
D12
48
D13
50
D14
51
D15
53
A12
36
BA0
20
VD
D
1
VD
D
27
VS
S
28
VS
S
41
A10
22
VD
D
Q
3
VD
D
Q
9
VD
D
Q
43
VD
D
Q
49
VSS
Q
6
VSS
Q
12
VSS
Q
46
VSS
Q
52
A11
35
BA1
21
VS
S
54
VD
D
14
R4 4.7K R4 4.7K
R3 4.7K R3 4.7K
R9 4.7K R9 4.7K
R5 4.7K R5 4.7K
R10 4.7K R10 4.7K
R8 4.7K R8 4.7K
R2 4.7K R2 4.7K
R11 4.7K R11 4.7K
R7 4.7K R7 4.7K
DR_VCC33
Figure 5.22. SDRAM schematic.