ics9fg1901 Integrated Device Technology, ics9fg1901 Datasheet - Page 5

• Manufacturer Part Number: ics9fg1901
• Description: Frequency Generator For P4? ? ? ? ? Cpu, Pci Express? ? ? ? ? & Fully Buffered Dimm Clocks
• Manufacturer: Integrated Device Technology

0962E—01/02/07
ICS9FG1901 Programmable Gear Ratios
Note: Lines in BOLD are Power-up defaults for FS_A_410 = 0 and 1 respectively.
Shaded areas are shown for reference only and are not necessarily valid operating points
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
SMBus
Byte 0
Integrated
Circuit
Systems, Inc.
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Input
(m)
12
12
3
5
2
5
8
3
4
6
1
5
4
3
2
3
1
3
5
2
5
8
3
5
6
1
5
4
3
2
3
1
Output
(n)
1
2
5
1
3
5
2
3
5
1
6
5
4
3
5
2
1
2
5
1
3
5
2
4
5
1
6
5
4
3
5
2
Gear Ratio
(n/m)
0.333
0.400
0.417
0.500
0.600
0.625
0.667
0.750
0.833
1.000
1.200
1.250
1.333
1.500
1.667
2.000
0.333
0.400
0.417
0.500
0.600
0.625
0.667
0.800
0.833
1.000
1.200
1.250
1.333
1.500
1.667
2.000
200.0 266.7
100.0 133.3
120.0 160.0
125.0 166.7
133.3 177.8
150.0 200.0
166.7 222.2
200.0 266.7
240.0 320.0
250.0 333.3
266.7 355.6
300.0 400.0
333.3
400.0
100.0 133.3
120.0 160.0
125.0 166.7
133.3 177.8
150.0 200.0
166.7 222.2
200.0 266.7
66.7
80.0
83.3
50.0
60.0
62.5
66.7
80.0
100 133.33
NA
NA
NA
CLK IN (CPU FSB) Frequency (MHz)
Input (CPU FSB) and Output
106.7
111.1
106.7
111.1
88.9
53.3
55.6
66.7
80.0
83.3
88.9
NA
NA
5
Frequencies (MHz)
320.0
106.7
128.0
133.3
160.0
192.0
200.0
213.3
240.0
266.7
320.0
384.0
400.0
100.0
106.7
128.0
133.3
160.0
192.0
200.0
213.3
266.7
320.0
64.0
66.7
80.0
96.0
160
NA
NA
NA
NA
166.67
333.3
111.1
133.3
138.9
166.7
200.0
208.3
222.2
250.0
277.8
333.3
400.0
100.0
104.2
111.1
133.3
138.9
166.7
200.0
208.3
222.2
277.8
333.3
66.7
69.4
83.3
NA
NA
NA
NA
NA
400.0
133.3
160.0
166.7
200.0
240.0
250.0
266.7
300.0
333.3
400.0
NA
NA
NA
NA
NA
NA
ICS9FG1901