W305B Datasheet, PDF (13/20 Pages) Cypress Semiconductor – Frequency Controller with System Recovery for Intel Integrated Core Logic

W305B
Table 5. Additional Frequency Selections through Serial Data Interface Data Bytes
Input Conditions
Output Frequency
FS4
FS3
FS2
FS1
FS0
SEL4 SEL3 SEL2 SEL1 SEL0
CPU
SDRAM
3V66
PCI
0
0
0
0
0
66.6
100.0
66.6
33.3
0
0
0
0
1
120.0
120.0
80.0
40.0
0
0
0
1
0
66.8
100.2
66.8
33.4
0
0
0
1
1
68.3
102.5
68.3
34.2
0
0
1
0
0
70.0
105.0
70.0
35.0
0
0
1
0
1
75.0
112.5
75.0
37.5
0
0
1
1
0
80.0
120.0
80.0
40.0
0
0
1
1
1
83.0
124.5
83.0
41.5
0
1
0
0
0
100.0
100.0
66.6
33.3
0
1
0
0
1
124.0
124.0
82.6
41.3
0
1
0
1
0
100.2
100.2
66.8
33.4
0
1
0
1
1
103.0
103.0
68.9
34.3
0
1
1
0
0
105.0
105.0
70.0
35.0
0
1
1
0
1
110.0
110.0
73.3
36.7
0
1
1
1
0
115.0
115.0
76.6
38.3
0
1
1
1
1
200.0
200.0
66.6
33.3
1
0
0
0
0
133.3
133.3
66.6
33.3
1
0
0
0
1
166.6
166.6
83.3
41.6
1
0
0
1
0
133.6
133.6
66.8
33.4
1
0
0
1
1
137.0
137.0
68.5
34.3
1
0
1
0
0
140.0
140.0
70.0
35.0
1
0
1
0
1
145.0
145.0
72.5
36.2
1
0
1
1
0
150.0
150.0
75.0
37.5
1
0
1
1
1
160.0
160.0
80.0
40.0
1
1
0
0
0
133.3
100.0
66.6
33.3
1
1
0
0
1
166.6
125.0
83.3
41.7
1
1
0
1
0
133.6
100.2
66.8
33.4
1
1
0
1
1
137.0
102.8
68.5
34.3
1
1
1
0
0
66.6
100.0
66.6
33.3
1
1
1
0
1
100.0
100.0
66.6
33.3
1
1
1
1
0
133.3
133.3
66.6
33.3
1
1
1
1
1
133.3
100.0
66.6
33.3
APIC
16.6
20.0
16.7
17.1
17.5
18.8
20.0
20.8
16.6
20.6
16.7
17.2
17.5
18.3
19.1
16.6
16.6
20.8
16.7
17.1
17.5
18.1
18.7
20.0
16.6
20.8
16.7
17.1
16.6
16.6
16.6
16.6
PLL Gear
Constants
(G)
32.00494
48.00741
32.00494
32.00494
32.00494
32.00494
32.00494
32.00494
48.00741
48.00741
48.00741
48.00741
48.00741
48.00741
48.00741
96.01482
64.00988
64.00988
64.00988
64.00988
64.00988
64.00988
64.00988
64.00988
64.00988
64.00988
64.00988
64.00988
32.00494
48.00741
64.00988
64.00988
Rev 1.0, November 20, 2006
Page 13 of 20