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參數(shù)資料
| 型號(hào)： | W48S101 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Spread Spectrum Motherboard Frequency Generator |
| 中文描述： | 擴(kuò)頻主板頻率發(fā)生器 |
| 文件頁(yè)數(shù)： | 10/12頁(yè) |
| 文件大小： | 143K |
| 代理商： | W48S101 |
W48S101-04
PRELIMINARY
10
PCI Clock Outputs, PCI1:7 and PCI_F (Lump Capacitance Test Load = 30 pF
Parameter
Description
Test Condition/Comments
CPU = 66.8/100 MHz
Min.
Typ.
Unit
Max.
t
P
t
H
t
L
t
R
t
F
t
D
t
JC
Period
Measured on rising edge at 1.5V
30
ns
High Time
Duration of clock cycle above 2.4V
12
ns
Low Time
Duration of clock cycle below 0.4V
12
ns
Output Rise Edge Rate
Measured from 0.4V to 2.4V
1
4
V/ns
Output Fall Edge Rate
Measured from 2.4V to 0.4V
1
4
V/ns
Duty Cycle
Measured on rising and falling edge at 1.5V
45
55
%
Jitter, Cycle-to-Cycle
Measured on rising edge at 1.5V. Maximum
difference of cycle time between two adjacent cycles.
250
ps
t
SK
t
O
Output Skew
Measured on rising edge at 1.5V
500
ps
CPU to PCI Clock Skew
Covers all CPU/PCI outputs. Measured on rising
edge at 1.5V. CPU leads PCI output.
1.5
4
ns
f
ST
Frequency Stabilization
from Power-up (cold
start)
Assumes full supply voltage reached within 1 ms
from power-up. Short cycles exist prior to frequency
stabilization.
3
ms
Z
o
AC Output Impedance
Average value during switching transition. Used for
determining series termination value.
30
APIC0:1 Clock Output (Lump Capacitance Test Load = 20 pF)
Parameter
f
Description
Test Condition/Comments
Frequency generated by crystal oscillator
CPU = 66.8/100 MHz
Unit
MHz
Min.
Typ.
Max.
Frequency, Actual
14.31818
t
R
t
F
t
D
f
ST
Output Rise Edge Rate
Measured from 0.4V to 2.0V
1
4
V/ns
Output Fall Edge Rate
Measured from 2.0V to 0.4V
1
4
V/ns
Duty Cycle
Measured on rising and falling edge at 1.25V
45
55
%
Frequency Stabilization
from Power-up (cold start)
Assumes full supply voltage reached within
1 ms from power-up. Short cycles exist prior to
frequency stabilization.
1.5
ms
Z
o
AC Output Impedance
Average value during switching transition. Used
for determining series termination value.
15
REF0:2 Clock Output (Lump Capacitance Test Load = 20 pF)
Parameter
f
Description
Test Condition/Comments
Frequency generated by crystal oscillator
CPU = 66.8/100 MHz
Unit
MHz
Min.
Typ.
14.318
Max.
Frequency, Actual
t
R
t
F
t
D
f
ST
Output Rise Edge Rate
Measured from 0.4V to 2.4V
0.5
2
V/ns
Output Fall Edge Rate
Measured from 2.4V to 0.4V
0.5
2
V/ns
Duty Cycle
Measured on rising and falling edge at 1.5V
45
55
%
Frequency Stabilization from
Power-up (cold start)
Assumes full supply voltage reached within
1 ms from power-up. Short cycles exist prior to
frequency stabilization.
3
ms
Z
o
AC Output Impedance
Average value during switching transition. Used
for determining series termination value.
40
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PDF描述 |
|---|---|
| W48S111-14 | Spread Spectrum Desktop/Notebook System Frequency Generator(寬頻譜桌上型/筆記本系統(tǒng)頻率發(fā)生器) |
| W48S111 | Spread Spectrum Desktop/Notebook System Frequency Generator |
| 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 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W48S101-04 | 制造商:CYPRESS 制造商全稱(chēng):Cypress Semiconductor 功能描述:Spread Spectrum Motherboard Frequency Generator |
| W48S111 | 制造商:CYPRESS 制造商全稱(chēng):Cypress Semiconductor 功能描述:Spread Spectrum Desktop/Notebook System Frequency Generator |
| W48S111-14 | 制造商:CYPRESS 制造商全稱(chēng):Cypress Semiconductor 功能描述:Spread Spectrum Desktop/Notebook System Frequency Generator |
| W48S87 | 制造商:CYPRESS 制造商全稱(chēng):Cypress Semiconductor 功能描述:Desktop/Notebook Frequency Generator |
| W48S87-04 | 制造商:CYPRESS 制造商全稱(chēng):Cypress Semiconductor 功能描述:Spread Spectrum 3 DIMM Desktop Clock |
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