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参数资料
| 型号： | W219 |
| 英文描述： | Clocks and Buffers |
| 中文描述： | 时钟和缓冲器 |
| 文件页数： | 9/15页 |
| 文件大小： | 175K |
| 代理商： | W219 |
W219B
PRELIMINARY
Document #: 38-07220 Rev. *A
Page 9 of 15
Table 4. Additional Frequency Selections through Serial Data Interface Data Bytes
Input Conditions
Data Byte 4, Bit 3 = 1
Bit 2
SEL_4
SEL_3
SEL_2
SEL_1
Output Frequency
CPU
SDRAM
3V66
PCI
APIC
Spread
Spectrum
Bit 7
Bit 6
Bit 5
Bit 4
SEL_0
0
0
0
0
0
75.3
113.0
75.3
37.6
18.8
OFF
0
0
0
0
1
95.0
95.0
63.3
31.6
15.8
–
0.6%
0
0
0
1
0
129.0
129.0
86.0
43.0
21.5
OFF
0
0
0
1
1
150.0
113.0
75.3
37.6
18.8
OFF
0
0
1
0
0
150.0
150.0
75.0
37.5
18.7
OFF
0
0
1
0
1
110.0
110.0
73.0
36.6
18.3
OFF
0
0
1
1
0
140.0
140.0
70.0
35.0
17.5
OFF
0
0
1
1
1
144.0
108.0
72.0
36.0
18.0
OFF
0
1
0
0
0
68.3
102.5
68.3
34.1
17.0
OFF
0
1
0
0
1
105.0
105.0
70.0
35.0
17.5
OFF
0
1
0
1
0
138.0
138.0
69.0
34.5
17.0
OFF
0
1
0
1
1
140.0
105.0
70.0
35.0
17.5
OFF
0
1
1
0
0
66.8
100.2
66.8
33.4
16.7
±0.45%
0
1
1
0
1
100.2
100.2
66.8
33.4
16.7
±0.45%
0
1
1
1
0
133.6
133.6
66.8
33.4
16.7
±0.45%
0
1
1
1
1
133.6
100.2
66.8
33.4
16.7
±0.45%
1
0
0
0
0
157.3
118.0
78.6
39.3
19.6
OFF
1
0
0
0
1
160.0
120.0
80.0
40.0
20.0
OFF
1
0
0
1
0
146.6
110.0
73.3
36.6
18.3
OFF
1
0
0
1
1
122.0
91.5
61.0
30.5
15.2
–
0.6%
1
0
1
0
0
127.0
127.0
84.6
42.3
21.1
OFF
1
0
1
0
1
122.0
122.0
81.3
40.6
20.3
–
0.6%
1
0
1
1
0
117.0
117.0
78.0
39.0
19.5
OFF
1
0
1
1
1
114.0
114.0
76.0
38.0
19.0
OFF
1
1
0
0
0
80.0
120.0
80.0
40.0
20.0
OFF
1
1
0
0
1
78.0
117.0
78.0
39.0
19.5
OFF
1
1
0
1
0
166.0
124.5
83.0
41.5
20.7
OFF
1
1
0
1
1
133.6
133.6
89.0
44.5
22.2
OFF
1
1
1
0
0
66.6
100.0
66.6
33.3
16.6
–
0.6%
1
1
1
0
1
100.0
100.0
66.6
33.3
16.6
–
0.6%
1
1
1
1
0
133.3
133.3
66.6
33.3
16.6
–
0.6%
1
1
1
1
1
133.3
100.0
66.6
33.3
16.6
–
0.6%
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