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參數(shù)資料
| 型號： | CY28442ZXC-2T |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 3/19頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CLOCK ALVISO PENTM 56TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 類型： | 時鐘/頻率發(fā)生器 |
| PLL： | 是 |
| 主要目的： | Intel CPU 服務(wù)器 |
| 輸入： | LVTTL，晶體 |
| 輸出： | HCSL，LVCMOS |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 3:20 |
| 差分 - 輸入:輸出： | 無/是 |
| 頻率 - 最大： | 200MHz |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 工作溫度： | 0°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 56-TFSOP（0.240"，6.10mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 56-TSSOP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | SLCY28442ZXC-2T |
CY28442-2
..................... Document #: 38-07691 Rev. *B Page 11 of 19
PD Deassertion
The power-up latency is less than 1.8 ms. This is the time from
the deassertion of the PD pin or the ramping of the power
supply until the time that stable clocks are output from the
clock chip. All differential outputs stopped in a three-state
condition resulting from power down will be driven high in less
than 300
s of PD deassertion to a voltage greater than
200 mV. After the clock chip’s internal PLL is powered up and
locked, all outputs will be enabled within a few clock cycles of
each other. Below is an example showing the relationship of
clocks coming up.
CPU_STP# Assertion
The CPU_STP# signal is an active LOW input used for
synchronous stopping and starting the CPU output clocks
while the rest of the clock generator continues to function.
When the CPU_STP# pin is asserted, all CPU outputs that are
set with the SMBus configuration to be stoppable via assertion
of CPU_STP# will be stopped within two–six CPU clock
periods after being sampled by two rising edges of the internal
CPUC clock. The final states of the stopped CPU signals are
CPUT = HIGH and CPUC = LOW. There is no change to the
output drive current values during the stopped state. The
CPUT is driven HIGH with a current value equal to 6 x (Iref),
and the CPUC signal will be tri-stated.
Figure 5. Power-down Deassertion Timing Waveform
DOT96C
PD
CPUC, 133MHz
CPUT, 133MHz
SRCC 100MHz
USB, 48MHz
DOT96T
SRCT 100MHz
Tstable
<1.8nS
PCI, 33MHz
REF
Tdrive_PWRDN#
<300
S, >200mV
CPU_STP#
CPUT
CPUC
Figure 6. CPU_STP# Assertion Waveform
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY28442ZXCT | 功能描述:IC CLOCK GEN ALVISO 56-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 產(chǎn)品變化通告:Product Discontinuation 04/May/2011 標(biāo)準(zhǔn)包裝:96 系列:- 類型:時鐘倍頻器，零延遲緩沖器 PLL:帶旁路 輸入:LVTTL 輸出:LVTTL 電路數(shù):1 比率 - 輸入:輸出:1:8 差分 - 輸入:輸出:無/無 頻率 - 最大:133.3MHz 除法器/乘法器:是/無 電源電壓:3 V ~ 3.6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:管件 其它名稱:23S08-5HPGG |
| CY28443 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Clock Generator for Intel㈢ Calistoga Chipset |
| CY28443-2 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Clock Generator for Intel㈢ Calistoga Chipset |
| CY28443-3 | 制造商:SPECTRALINEAR 制造商全稱:SPECTRALINEAR 功能描述:Clock Generator for Intel㈢ Calistoga Chipset |
| CY28443OXC | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Clock Generator for Intel㈢ Calistoga Chipset |
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