IR3522 International Rectifier, IR3522 Datasheet - Page 16

• Manufacturer Part Number: IR3522
• Description: DDR & VTT CONTROL IC
• Manufacturer: International Rectifier

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Page 16
Hex
0A
0B
0C
0D
0E
0F
1A
1B
1C
1D
1E
1F
10
11
12
13
14
15
16
17
18
19
0
1
2
3
4
5
6
7
8
9
Table 4 – Pre-Enable VDDR program Codes
Table 3 – Vtt Margining (Default in Gray)
VTT SVID
x000_0000
x000_0001
x000_0010
x000_0011
x000_0100
x000_0101
x000_0110
x000_0111
x000_1000
x000_1001
x000_1010
x000_1011
x000_1100
x000_1101
x000_1110
x000_1111
x001_0000
x001_0001
x001_0010
x001_0011
x001_0100
x001_0101
x001_0110
x001_0111
x001_1000
x001_1001
x001_1010
x001_1011
x001_1100
x001_1101
x001_1110
x001_1111
x1xx_xxxx
VTT Margining Range Codes
Codes
Pre-ENABLE VREF1 Codes
VID1
0
0
1
1
from Default
% Change
VID OFF
-11.67
-13.33
-16.67
-18.33
-21.67
-23.33
26.67
23.33
21.67
18.33
16.67
13.33
11.67
-1.67
-3.33
-6.67
-8.33
8.33
6.67
3.33
1.67
-10
-15
-20
-25
25
20
15
10
-5
5
0
VID0
0
1
0
1
VDDR
1.05
1.35
from VOUT1
1.2
1.5
% Change
VID OFF
63.16
62.35
61.52
60.70
59.87
59.06
58.23
57.40
56.59
55.78
54.94
54.12
53.28
52.46
51.64
50.82
49.16
48.31
47.46
46.61
45.78
44.93
44.08
43.25
42.42
41.58
40.74
39.90
39.08
38.21
37.44
50
V3.01
IR3522