W219B Datasheet, PDF (9/15 Pages) Cypress Semiconductor – Frequency Generator for Integrated Core Logic with 133-MHz FSB

PRELIMINARY
Table 4. Additional Frequency Selections through Serial Data Interface Data Bytes
Input Conditions
Output Frequency
Data Byte 4, Bit 3 = 1
Bit 2
Bit 7
Bit 6
Bit 5
Bit 4
SEL_4 SEL_3 SEL_2 SEL_1 SEL_0
CPU SDRAM 3V66
0
0
0
0
0
75.3
113.0
75.3
0
0
0
0
1
95.0
95.0
63.3
0
0
0
1
0
129.0
129.0
86.0
0
0
0
1
1
150.0
113.0
75.3
0
0
1
0
0
150.0
150.0
75.0
0
0
1
0
1
110.0
110.0
73.0
0
0
1
1
0
140.0
140.0
70.0
0
0
1
1
1
144.0
108.0
72.0
0
1
0
0
0
68.3
102.5
68.3
0
1
0
0
1
105.0
105.0
70.0
0
1
0
1
0
138.0
138.0
69.0
0
1
0
1
1
140.0
105.0
70.0
0
1
1
0
0
66.8
100.2
66.8
0
1
1
0
1
100.2
100.2
66.8
0
1
1
1
0
133.6
133.6
66.8
0
1
1
1
1
133.6
100.2
66.8
1
0
0
0
0
157.3
118.0
78.6
1
0
0
0
1
160.0
120.0
80.0
1
0
0
1
0
146.6
110.0
73.3
1
0
0
1
1
122.0
91.5
61.0
1
0
1
0
0
127.0
127.0
84.6
1
0
1
0
1
122.0
122.0
81.3
1
0
1
1
0
117.0
117.0
78.0
1
0
1
1
1
114.0
114.0
76.0
1
1
0
0
0
80.0
120.0
80.0
1
1
0
0
1
78.0
117.0
78.0
1
1
0
1
0
166.0
124.5
83.0
1
1
0
1
1
133.6
133.6
89.0
1
1
1
0
0
66.6
100.0
66.6
1
1
1
0
1
100.0
100.0
66.6
1
1
1
1
0
133.3
133.3
66.6
1
1
1
1
1
133.3
100.0
66.6
PCI
37.6
31.6
43.0
37.6
37.5
36.6
35.0
36.0
34.1
35.0
34.5
35.0
33.4
33.4
33.4
33.4
39.3
40.0
36.6
30.5
42.3
40.6
39.0
38.0
40.0
39.0
41.5
44.5
33.3
33.3
33.3
33.3
W219B
APIC
18.8
15.8
21.5
18.8
18.7
18.3
17.5
18.0
17.0
17.5
17.0
17.5
16.7
16.7
16.7
16.7
19.6
20.0
18.3
15.2
21.1
20.3
19.5
19.0
20.0
19.5
20.7
22.2
16.6
16.6
16.6
16.6
Spread
Spectrum
OFF
–0.6%
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
±0.45%
±0.45%
±0.45%
±0.45%
OFF
OFF
OFF
–0.6%
OFF
–0.6%
OFF
OFF
OFF
OFF
OFF
OFF
–0.6%
–0.6%
–0.6%
–0.6%
Document #: 38-07220 Rev. *A
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