Datasheet > MPC9855

MPC9855

更新时间： 2024-09-23 22:51:11

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		时钟发生器微处理器 PC
页数	文件大小	规格书
12页	267K
描述
Clock Generator for PowerQUICC and PowerPC Microprocessors

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数据手册

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MPC9855 数据手册

MPC9855

Rev 2, 1/2005

Freescale Semiconductor

Technical Data

Preliminary Information

MPC9855

Clock Generator for PowerQUICC

and PowerPC Microprocessors

The MPC9855 is a PLL based clock generator specifically designed for

Freescale Microprocessor and Microcontroller applications including the

PowerPC and PowerQUICC. This device generates a microprocessor input

clock. The microprocessor clock is selectable in output frequency to any of the

commonly used microprocessor input and bus frequencies. The device offers

eight low skew clock outputs in two banks, each configurable to support different

clock frequencies. The extended temperature range of the MPC9855 supports

telecommunication and networking requirements.

MICROPROCESSOR

CLOCK GENERATOR

Features

•

8 LVCMOS outputs for processor and other circuitry

Crystal oscillator or external reference input

25 or 33 MHz Input reference frequency

VF SUFFIX

VM SUFFIX (Pb-FREE)

100 MAPBGA PACKAGE

CASE 1462-01

Selectable output frequencies include = 200, 166, 133,125, 111, 100, 83, 66,

50, 33, or 16 MHz

•

Buffered reference clock output (2 copies)

Low cycle-to-cycle and period jitter

100-lead PBGA package

100-lead Pb-free Package Available

3.3 V supply with 3.3 V or 2.5 V LVCMOS output supplies

Supports computing, networking, telecommunications applications

Ambient temperature range –40°C to +85°C

100-lead PBGA package

100-lead Pb-free Package Available

Functional Description

The MPC9855 uses either a 25 or 33 MHz reference frequency to generate 8 LVCMOS output clocks, of which, the frequency

is selectable from 16 MHz to 200 MHz. The reference is applied to the input of a PLL and multiplied to 2 GHz. Output dividers,

divide this frequency by 10, 12, 15, 16, 18, 20, 24, 30, 40, 60, or 120 to produce output frequencies of 200, 166, 133, 125, 111,

100, 83, 66, 50, 33, or 16 MHz. The single-ended LVCMOS outputs provide 8 low skew outputs for use in driving a microprocessor

or microcontroller clock input as well as other system components. The input reference, either crystal or external input is also

buffered to a separate dual outputs that my be used as the clock source for a Ethernet PHY if desired.

The reference clock may be provided by either an external clock input of 25 or 33 MHz. An internal oscillator requiring a 25

MHz crystal for frequency control may also be used. The external clock source my be applied to either of two clock inputs and

selected via the CLK_SEL control input. Both single ended LVCMOS and differential LVPECL inputs are available. The crystal

oscillator or external clock input is selected via the input pin of XTAL_SEL. Other than the crystal, no external components are

required for crystal oscillator operation. The REF_33 MHz configuration pin is used to select between a 33 and 25 MHz input

frequency.

The MPC9855 is packaged in a 100 lead MAPBGA package to optimize both performance and board density.

ORDERING INFORMATION

Device

Temp. Range

Case No.

Package

MPC9855

–40°C to +85°C

1462-01

100 lead MAPBGA

12 3 4 5 6 7...12

中文翻译

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与MPC9855相关器件

型号	品牌	获取价格	描述	数据表
MPC9855VF	IDT	获取价格	Processor Specific Clock Generator, 200MHz, PBGA100, MAPBGA-100
MPC9855VF	NXP	获取价格	200MHz, PROC SPECIFIC CLOCK GENERATOR, PBGA100, 11 X 11 MM, 1 MM PITCH, MAPBGA-100
MPC9855VF	MOTOROLA	获取价格	200MHz, PROC SPECIFIC CLOCK GENERATOR, PBGA100, MAPBGA-100
MPC9855VFR2	NXP	获取价格	200MHz, PROC SPECIFIC CLOCK GENERATOR, PBGA100, 11 X 11 MM, 1 MM PITCH, MAPBGA-100
MPC9855VM	NXP	获取价格	200MHz, PROC SPECIFIC CLOCK GENERATOR, PBGA100, 11 X 11 MM, 1 MM PITCH, LEAD FREE, MAPBGA-
MPC9855VMR2	IDT	获取价格	Processor Specific Clock Generator, 200MHz, PBGA100, 11 X 11 MM, 1 MM PITCH, LEAD FREE, MA
MPC9855VMR2	NXP	获取价格	200MHz, PROC SPECIFIC CLOCK GENERATOR, PBGA100, 11 X 11 MM, 1 MM PITCH, LEAD FREE, MAPBGA-
MPC9857DW	NXP	获取价格	IC,1:10 OUTPUT, DIFFERENTIAL,CMOS,TSSOP,48PIN,PLASTIC
MPC9857DW	IDT	获取价格	PLL Based Clock Driver, 9857 Series, 10 True Output(s), 0 Inverted Output(s), PDSO48, TSSO
MPC9865VFR2	IDT	获取价格	Clock Generator, PBGA100

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