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參數資料
| 型號： | MPC9658FA |
| 廠商： | MOTOROLA INC |
| 元件分類： | 時鐘及定時 |
| 英文描述： | PLL BASED CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| 封裝： | 7 X 7 MM, LQFP-32 |
| 文件頁數： | 1/9頁 |
| 文件大?。?/td> | 144K |
| 代理商： | MPC9658FA |
5
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order Number: MPC9658/D
Rev 3, 02/2003
MOTOROLA ADVANCED CLOCK DRIVERS DEVICE DATA
518
3.3V 1:10 LVCMOS PLL Clock
Generator
The MPC9658 is a 3.3V compatible, 1:10 PLL based clock generator
and zero-delay buffer targeted for high performance low-skew clock dis-
tribution in mid-range to high-performance telecom, networking and com-
puting applications. With output frequencies up to 250 MHz and output
skews less than 120 ps the device meets the needs of the most demand-
ing clock applications. The MPC9658 is specified for the temperature
range of 0
°C to +70°C.
Features
1:10 PLL based low-voltage clock generator
Supports zero-delay operation
3.3V power supply
Generates clock signals up to 250 MHz
Maximum output skew of 120 ps
Differential LVPECL reference clock input
External PLL feedback
Drives up to 20 clock lines
32 lead LQFP packaging
Pin and function compatible to the MPC958
Functional Description
The MPC9658 utilizes PLL technology to frequency lock its outputs
onto an input reference clock. Normal operation of the MPC9658 requires
the connection of the QFB output to the feedback input to close the PLL
feedback path (external feedback). With the PLL locked, the output fre-
quency is equal to the reference frequency of the device and VCO_SEL
selects the operating frequency range of 50 to 125 MHz or 100 to 250
MHz. The two available post-PLL dividers selected by VCO_SEL (divide-
by-2 or divide-by-4) and the reference clock frequency determine the
VCO frequency. Both must be selected to match the VCO frequency
range. The internal VCO of the MPC9658 is running at either 2x or 4x of
the reference clock frequency.
The MPC9658 has a differential LVPECL reference input along with an external feedback input. The MPC9658 is ideal for use
as a zero delay, low skew fanout buffer. The device performance has been tuned and optimized for zero delay performance.
The PLL_EN and BYPASS controls select the PLL bypass configuration for test and diagnosis. In this configuration, the
selected input reference clock is bypassing the PLL and routed either to the output dividers or directly to the outputs. The PLL
bypass configurations are fully static and the minimum clock frequency specification and all other PLL characteristics do not
apply. The outputs can be disabled (high-impedance) and the device reset by asserting the MR/OE pin. Asserting MR/OE also
causes the PLL to loose lock due to missing feedback signal presence at FB_IN. Deasserting MR/OE will enable the outputs and
close the phase locked loop, enabling the PLL to recover to normal operation.
The MPC9658 is fully 3.3V compatible and requires no external loop filter components. The inputs (except PCLK) accept
LVCMOS except signals while the outputs provide LVCMOS compatible levels with the capability to drive terminated 50
W
transmission lines. For series terminated transmission lines, each of the MPC9658 outputs can drive one or two traces giving the
devices an effective fanout of 1:16. The device is packaged in a 7x7 mm2 32-lead LQFP package.
FA SUFFIX
32 LEAD LQFP PACKAGE
CASE 873A
MPC9658
LOW VOLTAGE
3.3V LVCMOS 1:10
PLL CLOCK GENERATOR
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MPC9658FAR2 | 制造商:Integrated Device Technology Inc 功能描述:PLL Clock Driver Single 32-Pin LQFP T/R 制造商:Integrated Device Technology Inc 功能描述:MPC9658FAR2 - Tape and Reel |
| MPC96877VK | 功能描述:時鐘發(fā)生器及支持產品 DDR2 PLL 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MPC96877VKR2 | 功能描述:時鐘發(fā)生器及支持產品 DDR2 PLL 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MPC970 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW VOLTAGE PLL CLOCK DRIVER |
| MPC972 | 制造商:Motorola Inc 功能描述: |
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