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參數(shù)資料
| 型號(hào)： | W48S111 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Spread Spectrum Desktop/Notebook System Frequency Generator |
| 中文描述： | 擴(kuò)頻桌面/筆記本電腦系統(tǒng)的頻率發(fā)生器 |
| 文件頁(yè)數(shù)： | 6/11頁(yè) |
| 文件大小： | 137K |
| 代理商： | W48S111 |
W48S111-14
PRELIMINARYPRELIMI-
6
Note:
2.
CPU and PCI frequency selections are listed in
Table 1
and
Table 5
.
Table 5. Additional Frequency Selections through Serial Data Interface Data Bytes
Input Conditions
Data Byte 3, Bit 3 = 1
Bit 6
SEL_2
SEL_1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
Output Frequency
If Spread Is On
CPU, SDRAM
Clocks (MHz)
68.5
75
83.3
66.8
103
112
133.3
100
PCI Clocks
(MHz)
34.25
37.5
41.6
33.4
34.25
37.3
44.43
33.3
Spread Percentage
± 0.5% Center
± 0.5% Center
± 0.5% Center
± 0.5% Center
± 0.5% Center
± 0.5% Center
± 0.5% Center
± 0.5% Center
Bit 5
Bit 4
SEL_0
0
1
0
1
0
1
0
1
Table 6. Select Function for Data Byte 3, Bits 0:1
Function
Input Conditions
Data Byte 3
Bit 1
0
0
1
1
Output Conditions
CPU0:1
Note 2
X1/2
±0.5%
Hi-Z
PCI_F, PCI1:6
Note 2
CPU/2, 3, or 4
±0.5%
Hi-Z
REF2X,
IOAPIC
14.318 MHz
X1
14.318 MHz
Hi-Z
48MHZ
48 MHz
X1/2
48 MHz
Hi-Z
24MHZ
24 MHz
X1/4
24 MHz
Hi-Z
Bit 0
0
1
0
1
Normal Operation
Test Mode
Spread Spectrum On
Three-state
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| W48S87-04 | Spread Spectrum 3 DIMM Desktop Clock(寬頻譜3 DIMM桌上型PC機(jī)時(shí)鐘) |
| W48S87-72H | CPU System Clock Generator |
| W48S87 | Spread Spectrum 3 DIMM Desktop Clock |
| W48S87-72 | Desktop/Notebook Frequency Generator(桌上型電腦/筆記本電腦系統(tǒng)頻率發(fā)生器) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W48S111-14 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Spread Spectrum Desktop/Notebook System Frequency Generator |
| W48S87 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Desktop/Notebook Frequency Generator |
| W48S87-04 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Spread Spectrum 3 DIMM Desktop Clock |
| W48S87-72 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Desktop/Notebook Frequency Generator |
| W48S87-72H | 制造商:Cypress Semiconductor 功能描述:Logic and Timing, Clock Generation, Desktop/Notebook Frequency Generator |
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