參數(shù)資料
型號: CY28405OCT
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: XO, clock
英文描述: Circular Connector; No. of Contacts:6; Series:; Body Material:Aluminum; Connecting Termination:Solder; Connector Shell Size:10; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:10-6
中文描述: 200.9 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48
封裝: SSOP-48
文件頁數(shù): 12/19頁
文件大?。?/td> 259K
代理商: CY28405OCT
CY28405
Document #: 38-07512 Rev. *B
Page 12 of 19
PD# Deassertion
The power-up latency between PD# rising to a valid logic ‘1’
level and the starting of all clocks is less than 1.8 ms. The
CPUT/C outputs must be driven to greater than 200 mV is less
than 300
μ
s.
REF, 14.31818
Tdrive_PWRDN#
<300
μ
s, >200mV
PWRDWN#
CPUC, 133MHz
CPUT, 133MHz
3V66, 66MHz
USB, 48MHz
PCI, 33MHz
Tstable
<1.8ms
Figure 4. Power-down Deassertion Timing Waveforms
FS_A, FS_B
VTT_PWRGD#
PWRGD_VRM
VDD Clock Gen
Clock State
Clock Outputs
Clock VCO
0.2-0.3mS
Delay
State 0
State 2
State 3
Wait for
VTT_PWRGD#
Sample Sels
Off
Off
On
On
State 1
Device is not affected,
VTT_PWRGD# is ignored
Figure 5. VTT_PWRGD Timing Diagram
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