參數(shù)資料
型號(hào)： CY28326OC
廠商： CYPRESS SEMICONDUCTOR CORP
元件分類： XO, clock
英文描述： FTG for VIA PT880 Serial Chipset
中文描述： 333.3 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48
封裝： SSOP-48
文件頁(yè)數(shù)： 16/23頁(yè)
文件大?。?/td> 288K
代理商： CY28326OC
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).
相關(guān)PDF資料
PDF描述
CY28326OCT FTG for VIA PT880 Serial Chipset
CY28326OXC Single Pole Normally Open: 1-Form-A
CY28326OXCT Single Pole Normally Open: 1-Form-A
CY28341-2 Universal Clock Chip for VIA P4M/KT/KM400 DDR Systems
CY29962 2.5V/3.3V, 150-MHz Multi-Output Zero Delay Buffer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CY28326OCT 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:FTG for VIA PT880 Serial Chipset
CY28326OXC 制造商:Rochester Electronics LLC 功能描述:- Bulk
CY28326OXCT 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:FTG for VIA PT880 Serial Chipset
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
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