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參數(shù)資料
| 型號： | CY28326OXCT |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | Single Pole Normally Open: 1-Form-A |
| 中文描述： | 333.3 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | LEAD FREE, SSOP-48 |
| 文件頁數(shù)： | 16/23頁 |
| 文件大小： | 288K |
| 代理商： | CY28326OXCT |
CY28326
Document #: 38-07616 Rev. *A
Page 16 of 23
280us
VTT_PWRGD
POR(Power On
Reset)
Situation 1 : Power on & Ratio initial by HW strapping
VCC3
Lo
Ratio Select PIN
Lo
(PIN20)Ratio1/
PCI6
Hi
(PIN19)Ratio0/
PCI5
When Power up Ratio Select PIN = "Lo" then
PIN19,PIN20 become Ratio Function PIN
Power up PIN19 default = Ratio 0 follow HW FSA
Strapping
1ms
System Power
OK
PCI RESET
20us
Power up PIN20 default = Ratio 1 follow HW FSB
Strapping
MODE
Figure 12. Situation 1: Power on & Ratio initial by HW strapping
P o w e r s e q u e n c e fo r R a tio P IN
S itu a tio n 2 : B IO S p r o g r a m m in g S W F S E L ta b le a n d S y s te m r e s e t
b y W a tc h d o g tim e r r e s e t fu n c tio n (N O F r e q u e c n y r e c o v e r y ).
V T T _ P W R G D
P O R ( P o w e r O n
R e s e t)
V C C 3
Lo
R a tio S e le c t P IN
( P IN 2 0 )R a tio 1 /
P C I6
H i
( P IN 1 9 )R a tio 0 /
P C I5
1 m s
S ys t e m P o w e r
O K
P C I R E S E T
S y s te m S tr a p p in g F re q R a tio in th is
p o in t
A fte r B IO S p ro g ra m m in g S W F S E L R a tio 1 s w itc h to n e w S W
F S 1 v a lu e
H i
H i
H i
H i
A fte r B IO S p ro g r a m m in g S W F S E L R a tio 0 s w itc h to n e w S W
F S 0 v a lu e
M O D E
H i
Figure 13. BIOS programming SW FSEL table and System reset by
Watch timer reset function (NO Frequency recovery).
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CY28326SPC | 制造商:Cypress Semiconductor 功能描述: |
| CY28329 | 制造商:SPECTRALINEAR 制造商全稱:SPECTRALINEAR 功能描述:133 MHz Spread Spectrum Clock Synthesizer/Driver with Differential CPU Outputs |
| CY28329OXC | 功能描述:時鐘驅動器及分配 Intel CK-408B for Plumas chipset RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| CY28329OXCT | 功能描述:時鐘驅動器及分配 Intel CK-408B for Plumas chipset RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| CY28329PVC | 制造商:Cypress Semiconductor 功能描述: |
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