Datasheet > MPC9817

MPC9817

更新时间： 2024-09-23 21:55:27

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		时钟发生器微控制器微处理器 PC
页数	文件大小	规格书
8页	97K
描述
Clock Generator for PowerQUICC and PowerPC Microprocessors and Microcontrollers

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MPC9817 数据手册

MPC9817

Rev 1, 11/2004

Freescale Semiconductor

Technical Data

Clock Generator for PowerQUICC

and PowerPC Microprocessors and

Microcontrollers

MPC9817

The MPC9817 is a PLL-based clock generator specifically designed for

Freescale Semiconductor Microprocessor and Microcontroller applications

including the PowerPC and PowerQUICC. This device generates the

microprocessor input clock and other microprocessor system and bus clocks at

any one of four output frequencies. These frequencies include the popular

33- and 66-MHz PCI bus frequencies. The device offers five low-skew clock

outputs plus three reference outputs. The clock input reference is 25 MHz and

may be derived from an external source or by the addition of a 25-MHz crystal to

the on-chip crystal oscillator. The extended temperature range of the MPC9817

supports telecommunication and networking requirements.

MICROPROCESSOR

CLOCK GENERATOR

SD SUFFIX

20 SSOP PACKAGE

CASE 1461-01

Features

•

5 LVCMOS outputs for processor and other system circuitry

3 Buffered 25-MHz reference clock outputs

Crystal oscillator or external reference input

25-MHz input reference frequency

Selectable output frequencies include: 25, 33, 50, or 66 MHz

Low cycle-to-cycle and period jitter

EN SUFFIX

Package: 20-lead SSOP

20 SSOP PACKAGE

Pb-FREE PACKAGE

CASE 1461-01

3.3-V supply

Supports computing, networking, and telecommunications applications

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

Functional Description

The MPC9817 uses a PLL with a 25-MHz input reference frequency to generate a single bank of five configurable LVCMOS

output clocks. The output frequency of this bank is configurable to either 25, 33, 50, or 66 MHz by two FSEL pins. The 25-MHz

reference may be either an external frequency source or a 25-MHz crystal. The 25-MHz crystal is directly connected to the

XTAL_IN and XTAL_OUT pins with no additional components required. An external reference may be applied to the XTAL_IN

pin with the XTAL_OUT pin left floating. The input reference, whether provided by a crystal or an external input, is also directly

buffered to a second bank of three LVCMOS outputs. These outputs may be used as the clock source for processor I/O

applications such as an Ethernet PHY. When FSEL0 and FSEL1 are both configured low, the QA outputs are directly fed from

the input reference providing a total of eight low-skew 25-MHz outputs. For all other combinations of FSEL0 and FSEL1 the

single-ended LVCMOS outputs provide five low-skew outputs for use in driving a microprocessor or microcontroller clock input

as well as other system components.

The MPC9817 is packaged in a 20-lead SSOP package.

12 3 4 5 6 7 8

中文翻译

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与MPC9817相关器件

型号	品牌	获取价格	描述	数据表
MPC9817ENR2	IDT	获取价格	Processor Specific Clock Generator, 66MHz, CMOS, PDSO20, LEAD FREE, SSOP-20
MPC9817ENR2	NXP	获取价格	66MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO20, LEAD FREE, SSOP-20
MPC9817SD	NXP	获取价格	66MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO20, SSOP-20
MPC9817SDR2	IDT	获取价格	Processor Specific Clock Generator, 66MHz, PDSO20, SSOP-20
MPC9817SDR2	NXP	获取价格	66 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO20, SSOP-20
MPC9819EN	IDT	获取价格	QSOP-20, Tube
MPC9819EN	NXP	获取价格	133MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO20, LEAD FREE, SSOP-20
MPC9819ENR2	IDT	获取价格	Clock Generator, CMOS, PDSO20
MPC9819SD	NXP	获取价格	133MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO20, SSOP-20
MPC9819SD	IDT	获取价格	Processor Specific Clock Generator, 133.33MHz, CMOS, PDSO20, 0.150 INCH, 0.025 INCH PITCH,

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