ICS950703 Datasheet, PDF (7/24 Pages) Integrated Circuit Systems – PROGRAMMABLE TIMING CONTROL HUB FOR P4

Integrated
Circuit
Systems, Inc.
Table1: QuadRom Frequency Selection Table
Bit6 Bit5
Bit4
Bit3 Bit2 Bit1 Bit0
X
X Sel133/100 FS3 FS2 FS1 FS0
CPU
MHz
MREF
MHz
0
0
0
0
0
0
0
90.00 45.00
0
0
0
0
0
0
1 100.00 50.00
0
0
0
0
0
1
0 100.90 50.45
0
0
0
0
0
1
1 103.00 51.50
0
0
0
0
1
0
0 105.00 52.50
0
0
0
0
1
0
1 108.00 54.00
0
0
0
0
1
1
0 110.00 55.00
0
0
0
0
1
1
1 112.00 56.00
0
0
0
1
0
0
0 115.00 57.50
0
0
0
1
0
0
1 118.00 59.00
0
0
0
1
0
1
0 120.00 60.00
0
0
0
1
0
1
1 122.00 61.00
0
0
0
1
1
0
0 125.00 62.50
0
0
0
1
1
0
1 127.00 63.50
0
0
0
1
1
1
0 130.00 65.00
0
0
0
1
1
1
1 133.60 66.80
0
0
1
0
0
0
0 120.00 60.00
0
0
1
0
0
0
1 133.33 66.67
0
0
1
0
0
1
0 133.90 66.95
0
0
1
0
0
1
1 136.00 68.00
0
0
1
0
1
0
0 138.00 69.00
0
0
1
0
1
0
1 140.00 70.00
0
0
1
0
1
1
0 142.00 71.00
0
0
1
0
1
1
1 144.00 72.00
0
0
1
1
0
0
0 145.00 72.50
0
0
1
1
0
0
1 148.00 74.00
0
0
1
1
0
1
0 150.00 75.00
0
0
1
1
0
1
1 152.00 76.00
0
0
1
1
1
0
0 154.00 77.00
0
0
1
1
1
0
1 156.00 78.00
0
0
1
1
1
1
0 158.00 79.00
0
0
1
1
1
1
1 160.00 80.00
Notes:
Table1 continues on the next three pages.
PCI
MHz
30.00
33.33
33.63
34.33
35.00
36.00
36.67
37.33
38.33
39.33
40.00
40.67
41.67
42.33
43.33
44.53
30.00
33.33
33.48
34.00
34.50
35.00
35.50
36.00
36.25
37.00
37.50
38.00
38.50
39.00
39.50
40.00
3V66
MHz
60.00
66.67
67.27
68.67
70.00
72.00
73.33
74.67
76.67
78.67
80.00
81.33
83.33
84.67
86.67
89.07
60.00
66.67
66.95
68.00
69.00
70.00
71.00
72.00
72.50
74.00
75.00
76.00
77.00
78.00
79.00
80.00
ICS950703
0690D—05/14/04
7