ICS9FG1904B-1 Datasheet, PDF (11/22 Pages) Integrated Circuit Systems – Frequency Generator for CPU, PCIe Gen 1, PCIe Gen 2 & FBD

Integrated
Circuit
Systems, Inc.
ICS9FG1904B-1
GS Gear Ratios
GSO Gear Ratios
9FG1904-1 Gear Ratios
CLK_IN
(CPU FSB)
MHz
Geared DIF
Outputs
MHz
M
n
Gear
Ratio
n/M
CLK_IN
(CPU FSB)
MHz
Geared
DIF
Outputs
MHz
M
n
Gear
Ratio
n/M
CLK_IN
(CPU FSB)
MHz
Geared
DIF
Outputs
MHz
M
n
Gear
Ratio
n/M
1 100.00
133.33 3 4 1.33 100.00 133.33 3 4 1.33 100.00 133.33 3 4 1.33
2 100.00
166.67 3 5 1.67 100.00 166.67 3 5 1.67 100.00 166.67 3 5 1.67
3 100.00
200.00 1 2 2.00 100.00 200.00 1 2 2.00 100.00 200.00 1 2 2.00
4 100.00
5 100.00
266.67
333.33
3 8 2.67
3 10 3.33
100.00
100.00
266.67 3 8 2.67
333.33 3 10 3.33
100.00
100.00
266.67 3 8 2.67
333.33 3 10 3.33
6 100.00
400.00 1 4 4.00 133.33 100.00 4 3 0.75 100.00 400.00 1 4 4.00
7 133.33
8 133.33
166.67
200.00
4 5 1.25
2 3 1.50
133.33
133.33
166.67 4 5 1.25
200.00 2 3 1.50
133.33
133.33
166.67 4 5 1.25
200.00 2 3 1.50
9 133.33
266.67 1 2 1.25 133.33 266.67 1 2 2.00 133.33 266.67 1 2 1.25
10 133.33
11 133.33
333.33
400.00
2 5 1.50
1 3 3.00
133.33
133.33
333.33 2 5 2.50
400.00 1 3 3.00
133.33
133.33
333.33 2 5 1.50
100.00 4 3 0.75
12 166.67
13 166.67
133.33
200.00
5 4 0.80
5 6 1.20
166.67
166.67
133.33 5 4 0.80
200.00 5 6 1.20
166.67
166.67
133.33 5 4 0.80
200.00 5 6 1.20
14 166.67
160/
15 166.67
16 166.67
266.67
320/
333.33
400.00
5 8 1.60
1 2 2.00
5 12 2.40
166.67
166.67
166.67
266.67
333.33
400.00
5 8 1.60
1 2 2.00
5 12 2.40
166.67
160/
166.67
166.67
266.67
320/
333.33
400.00
5 8 1.60
1 2 2.00
5 12 2.40
17 200.00
133.33 3 2 0.67 200.00 133.33 3 2 0.67 200.00 133.33 3 2 0.67
18 200.00
166.67 6 5 0.83 200.00 166.67 6 5 0.83 200.00 166.67 6 5 0.83
19 200.00
266.67 3 4 1.33 200.00 266.67 3 4 1.33 200.00 266.67 3 4 1.33
20 200.00
21 200.00
333.33
400.00
3 5 1.67
1 2 2.00
200.00
200.00
333.33 3 5 1.67
400.00 1 2 2.00
200.00
200.00
333.33 3 5 1.67
400.00 1 2 2.00
22 266.67
266.667/
23 320
24 266.67
133.33
166.67/
200
200.00
2 1 0.50
8 5 0.63
4 3 0.75
266.67
266.67
266.67
133.33 2 1 0.50
166.67 8 5 0.63
200.00 4 3 0.75
266.67
266.667/
320.00
266.67
133.33 2 1 0.50
166.67/
200.00 ^{8 5 0.63}
200.00 4 3 0.75
25 333.33
320/
26 333.33
27 333.33
133.33
160/
166.67
200.00
5 2 0.40
2 1 0.50
5 3 0.60
333.33
333.33
333.33
133.33 5 2 0.40
166.67 2 1 0.50
200.00 5 3 0.60
333.33
320/
333.33
333.33
133.33 5 2 0.40
160/
166.67
2
1
0.50
200.00 5 3 0.60
28 400.00
133.33 3 1 0.33 400.00 133.33 3 1 0.33 400.00 133.33 3 1 0.33
29 400.00
160.00 5 2 0.40 400.00 166.67 12 5 0.42 400.00 160.00 5 2 0.40
30 400.00
31 400.00
32 400.00
166.67
320.00
333.33
12 5 0.42
5 4 0.80
6 5 0.83
400.00
400.00
400.00
200.00 2 1 0.50
266.67 6 4 0.67
333.33 6 5 0.83
400.00
400.00
400.00
166.67 12 5
320.00 5 4
333.33 6 5
0.42
0.80
0.83
Figure 1 GS versus GSO versus 9FG1904B-1 Gear Ratios
1255B—08/03/07
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