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參數(shù)資料
| 型號： | MPC93H51AC |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 93H SERIES, PLL BASED CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| 封裝： | 7 X 7 MM, LEAD FREE, LQFP-32 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 329K |
| 代理商： | MPC93H51AC |
MPC93H51
Rev 4, 10/2004
Freescale Semiconductor
Technical Data
Freescale Semiconductor, Inc., 2004. All rights reserved.
This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
Low Voltage PLL Clock Driver
The MPC93H51 is a 3.3 V compatible, PLL based clock generator targeted for
high performance clock distribution systems. With output frequencies of up to
240 MHz and a maximum output skew of 150 ps the MPC93H51 is an ideal
solution for the most demanding clock tree designs. The device offers 9 low skew
clock outputs. Each is configurable to support the clocking needs of the various
high-performance microprocessors including the PowerQuicc II integrated
communication microprocessor. The devices employs a fully differential PLL
design to minimize cycle-to-cycle and long-term jitter.
Features
9 outputs LVCMOS PLL clock generator
25 – 240 MHz output frequency range
Fully integrated PLL
Compatible to various microprocessors such as PowerQuicc II
Supports networking, telecommunications and computer applications
Configurable outputs: divide-by-2, 4 and 8 of VCO frequency
LVPECL and LVCMOS compatible inputs
External feedback enables zero-delay configurations
Output enable/disable and static test mode (PLL enable/disable)
Low skew characteristics: maximum 150 ps output-to-output
32-lead LQFP package
32-lead Pb-free Package Available
Ambient Temperature Range 0°C to +70°C
Pin & Function Compatible with the MPC951
Functional Description
The MPC93H51 utilizes PLL technology to frequency and phase lock its outputs onto an input reference clock. Normal oper-
ation of the MPC93H51 requires a connection of one of the device outputs to the EXT_FB input to close the PLL feedback path.
The reference clock frequency and the output divider for the feedback path determine the VCO frequency. Both must be selected
to match the VCO frequency range. With available output dividers of divide-by-4 and divide-by-8, the internal VCO of the
MPC93H51 is running at either 4x or 8x of the reference clock frequency. The frequency of the QA, QB, QC and QD outputs is
either one half, one fourth or one eighth of the selected VCO frequency and can be configured for each output bank using the
FSELA, FSELB, FSELC and FSELD pins, respectively. The available output-to-input frequency ratios are 4:1, 2:1, 1:1, 1:2 and
1:4. The REF_SEL pin selects the differential LVPECL (PCLK and PCLK) or the LVCMOS compatible reference input (TCLK).
The MPC93H51 also provides a static test mode when the PLL enable pin (PLL_EN) is pulled to logic low state. In test mode,
the selected input reference clock is routed directly to the output dividers bypassing the PLL. The test mode is intended for system
diagnostics, test and debug purpose. This test mode is fully static, and the minimum clock frequency specification does not apply.
The outputs can be disabled by deasserting the OE pin (logic high state). In PLL mode, deasserting OE causes the PLL to loose
lock due to no feedback signal presence at EXT_FB. Asserting OE will enable the outputs and close the phase locked loop, also
enabling the PLL to recover to normal operation. The MPC93H51 is 3.3 V compatible and requires no external loop filter compo-
nents. All inputs except PCLK and PCLK accept LVCMOS signals while the outputs provide LVCMOS compatible levels with the
capability to drive terminated 50
transmission lines. For series terminated transmission lines, each of the MPC93H51 outputs
can drive one or two traces giving the devices an effective fanout of 1:18. The device is packaged in a 7x7 mm2 32-lead LQFP
package.
Application Information
The fully integrated PLL of the MPC93H51 allows the low skew outputs to lock onto a clock input and distribute it with essen-
tially zero propagation delay to multiple components on the board. In zero-delay buffer mode, the PLL minimizes phase offset
between the outputs and the reference signal.
MPC93H51
LOW VOLTAGE 3.3 V
PLL CLOCK GENERATOR
FA SUFFIX
32-LEAD LQFP PACKAGE
CASE 873A-03
AC SUFFIX
32-LEAD LQFP PACKAGE
Pb-FREE PACKAGE
CASE 873A-03
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC93H51ACR2 | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 FSL 1-9 LVCMOS/LVPEC L to LVCMOS PLL Cloc 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 |
| MPC93H51FA | 功能描述:IC PLL CLK DVR HI-DRIVE 32-LQFP RoHS:否 類別:集成電路 (IC) >> 時鐘/計(jì)時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| MPC93H52AC | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 FSL 1-11 LVCMOS PLL Clock Generator, hig 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 |
| MPC93H52ACR2 | 功能描述:IC CLK GEN ZD 1:11 32-LQFP RoHS:是 類別:集成電路 (IC) >> 時鐘/計(jì)時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| MPC93H52FA | 功能描述:IC CLOCK GEN/DVR HI-DRIVE 32LQFP RoHS:否 類別:集成電路 (IC) >> 時鐘/計(jì)時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
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