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參數(shù)資料
| 型號： | MPC992FA |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 375 MHz, PROC SPECIFIC CLOCK GENERATOR, PQFP32 |
| 封裝： | LQFP-32 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 237K |
| 代理商： | MPC992FA |
244
FREESCALE SEMICONDUCTOR ADVANCED CLOCK DRIVERS DEVICE DATA
Freescale Semiconductor, Inc.
TECHNICAL DATA
Order number: MPC992
Rev 2, 08/2001
Low Voltage PECL PLL Clock Driver
The MPC992 is a 3.3V compatible, PLL based PECL clock generator and
distributor. The fully differential design ensures optimum skew and PLL jitter
performance. The performance of the device makes the MPC992 ideal for
workstations, main frame computer, telecommunication and instrumentation
applications. The device offers a crystal oscillator or a differential PECL
reference clock input to provide flexibility in the reference clock interface. All of
the control signals to the MPC992 are LVTTL compatible inputs.
Features
Fully Integrated PLL
Output Frequency of up to 400MHz
PECL Clock Inputs and Outputs
Operates from a 3.3V VCC Supply
Output Frequency Configurable
32-Lead TQFP Packaging
±25ps Cycle-Cycle Jitter
Functional Description
The MPC992 offers two banks of outputs which can be configured into four
different relationships. The output banks can be configured into 2:1, 3:1, 3:2
and 5:2 ratios to provide a wide variety of potential frequency outputs.
In addition to these two banks of outputs a synchronization output is also offered. The SYNC output will provide information as to the
time when the two output banks will transition positively in phase. This information can be important when the odd ratios are used as
it provides for a baseline point in the system timing. The SYNC output will pulse high for one Qa clock period, centered on the rising
Qa clock edge four edges prior to the Qb synchronous edge. The relationship is illustrated in the timing diagrams in the data sheet.
The MPC992 offers several features to aid in system debug and test. The PECL reference input pins can be interfaced to a test
signal and the PLL can be bypassed to allow the designer to drive the MPC992 outputs directly. This allows for single stepping in a
system functional debug mode. In addition an overriding reset is provided which will force all of the Q outputs LOW upon assertion.
The MPC992 is packaged in a 32-lead TQFP package to optimize both performance and board density.
Figure 1. MPC992 Logic Diagram
MPC992
LOW VOLTAGE
PLL CLOCK DRIVER
FA SUFFIX
32-LEAD LQFP PACKAGE
CASE 873A-03
Qan
(x4)
Qbn
(x3)
SYNC
(x1)
Frequency
Generator
PLL_EN
PECL_CLK
XTAL_SEL
XTAL
OSC
XTAL1
XTAL2
VCO_SEL
FSEL0
FSEL1
Reset
1
0
1
0
1
Integrated
PLL
x2
POR
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC993 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Dynamic Switch PLL Clock Driver |
| MPC9992 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:3.3 DIFFRERENTIAL ECL/PECL PLL CLOCK GENERATOR |
| MPC9992AC | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MPC9992ACR2 | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MPC9992FA | 功能描述:鎖相環(huán) - PLL 2.5 3.3V 400MHz Clock Generator RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
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