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ICS9FG1904BK-1LFT Datasheet(PDF) 5 Page - Integrated Circuit Systems

Part # ICS9FG1904BK-1LFT
Description  Frequency Generator for CPU, PCIe Gen 1, PCIe Gen 2 & FBD
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Manufacturer  ICST [Integrated Circuit Systems]
Direct Link  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS9FG1904BK-1LFT Datasheet(HTML) 5 Page - Integrated Circuit Systems

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5
Integrated
Circuit
Systems, Inc.
ICS9FG1904B-1
1255B—08/03/07
ICS 9FG1904B-1 Programmable Gear Ratios
CLK_IN
(CPU FSB)
MHz
Geared DIF
Outputs
MHz
Mn
Gear
Ratio n/M
(FS_A_410#)
Byte 0,
bit 4
FS4
Byte 0,
bit 3
FS3
Byte 0,
bit 2
FS2
Byte 0,
bit 1
FS1
Byte 0,
bit 0
FS0
Notes
100.00
133.33
3
4
1.333
0
0000
100.00
166.67
3
5
1.667
0
0001
100.00
200.00
1
2
2.000
0
0010
100.00
266.67
3
8
2.667
0
0011
100.00
333.33
3
10
3.333
0
0100
100.00
400.00
1
4
4.000
0
0101
133.33
166.67
4
5
1.250
0
0110
1
133.33
200.00
2
3
1.500
0
0111
1
133.33
266.67
1
2
1.250
0
1000
133.33
333.33
2
5
1.500
0
1001
133.33
100.00
4
3
0.750
0
1010
166.67
133.33
5
4
0.800
0
1011
1,3
166.67
200.00
5
6
1.200
0
1100
1
166.67
266.67
5
8
1.600
0
1101
160/
166.67
320/
333.33
1
2
2.000
0
1110
1,2
166.67
400.00
5
12
2.400
0
1111
200.00
133.33
3
2
0.667
1
0000
1
200.00
166.67
6
5
0.833
1
0001
1
200.00
266.67
3
4
1.333
1
0010
1
200.00
333.33
3
5
1.667
1
0011
1
200.00
400.00
1
2
2.000
1
0100
1
266.67
133.33
2
1
0.500
1
0101
1
266.667/
320.00
166.67/
200.00
8
5
0.625
1
0110
1, 6
266.67
200.00
4
3
0.750
1
0111
1
333.33
133.33
5
2
0.400
1
1000
1
320/
333.33
160/
166.67
2
1
0.500
1
1001
1,5
333.33
200.00
5
3
0.600
1
1010
1
400.00
133.33
3
1
0.333
1
1011
1,4
400.00
160.00
5
2
0.400
1
1100
1
400.00
166.67
12
5
0.417
1
1101
1
400.00
320.00
5
4
0.800
1
1110
1
400.00
333.33
6
5
0.833
1
1111
1
Notes:
1. Targetted input/output frequency pairs
2. This Gear is also used for 160MHz/320 MHz.
3. Gear Ratio 5/4 is power up default for FS_A_410 = 1
4. Gear Ratio 3/1 is power up default for FS_A_410 = 0
5. This Gear is also used for 400MHz/200MHz
6. This Gear is also used for 320MHz/200MHz


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