Datasheet > MPC9894

MPC9894

更新时间： 2024-11-10 22:51:11

品牌	Logo	应用领域
其他 - ETC		时钟发生器分布式控制系统 DCS
页数	文件大小	规格书
28页	367K
描述
Quad Input Redundant IDCS Clock Generator

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

MPC9894 数据手册

MPC9894

Rev 3, 1/2005

Freescale Semiconductor

Technical Data

Quad Input Redundant IDCS Clock

Generator

MPC9894

The MPC9894 is a differential input and output, PLL-based Intelligent

Dynamic Clock Switch (IDCS) and clock generator specifically designed for

redundant clock distribution systems. The device receives up to four LVPECL

clock signals and generates eight phase-aligned output clocks. The MPC9894 is

able to detect failing clock signals and to dynamically switch to a redundant clock

signal. The switch from the failing clock to the redundant clock occurs without

interruption of the output clock signal (output clock slews to alignment). The

phase bump typically caused by a clock failure is eliminated. The device offers

eight low-skew clock outputs organized into four output banks, each configurable

to support the different clock frequencies. The extended temperature range of

the MPC9894 supports telecommunication and networking requirements.

QUAD INPUT REDUNDANT

IDCS CLOCK GENERATOR

Features

•

8 differential LVPECL output pairs

Quad-redundancy reference clock inputs

IDCS-on-chip intelligent dynamic clock switch

Smooth output phase transition during clock failover switch/*

Automatically detects clock failures

Clock activity monitor

Clock qualifier inputs

Manual clock select and automatic switch modes

21.25 – 340 MHz output frequency range

Specified frequency and phase slew rate on clock switch

LVCMOS compatible control inputs and outputs

External feedback enables zero-delay configurations

Output enable/disable and static test mode (PLL bypass)

Low-skew characteristics: maximum 50 ps⁽¹⁾output-to-output

I²C interface for device configuration

VF SUFFIX

100-LEAD MAPBGA PACKAGE

CASE 1462-01

Low cycle-to-cycle and period jitter

IEEE 1149.1 JTAG Interface

100-ball MAPBGA package

Supports 2.5 V or 3.3 V supplies with 2.5 V and 3.3 V I/O

Junction temperature range –40°C to +110°C

Functional Description

The MPC9894 is a quad differential redundant input clock generator. The device contains logic for clock failure detection and

auto switching for clock redundant applications. The generator uses a fully integrated PLL to generate clock signals from any one

of four redundant clock sources. The PLL multiplies the frequency of the input reference clock by one, two, four, eight or divides

the reference clock by two or four. The frequency-multiplied clock signal drives four banks of two differential outputs. Each bank

allows an individual frequency-divider configuration. All outputs are phase-aligned⁽¹⁾to each other. Due to the external PLL

feedback, the clock signals of all outputs are also phase-aligned⁽¹⁾to the selected input reference clock, providing virtually

zero-delay capability.

The integrated IDCS continuously monitors all four clock inputs and indicates a clock failure for each clock input. When a false

clock signal is detected on the active clock, the MPC9894 switches to a redundant clock input, forcing the PLL to slowly slew to

alignment and not produce any phase bumps at the outputs. The MPC9894 also provides a manual mode that allows for

user-controlled clock switches.

The device is packaged in a 11x11 mm²100-ball MAPBGA package.

1. At coincident rising edges.

12 3 4 5 6 7...28

中文翻译

下载PDF

与MPC9894相关器件

型号	品牌	获取价格	描述	数据表
MPC9894VF	NXP	获取价格	9894 SERIES, PLL BASED CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PBGA100, 11 X
MPC9894VF	MOTOROLA	获取价格	PLL BASED CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PBGA100, 11 X 11 MM, MAPBG
MPC9894VFR2	NXP	获取价格	PLL Based Clock Driver, 9894 Series, 8 True Output(s), 0 Inverted Output(s), PBGA100, 11 X
MPC9894VM	IDT	获取价格	PLL Based Clock Driver, 9894 Series, 8 True Output(s), 0 Inverted Output(s), PBGA100, 11 X
MPC990	MOTOROLA	获取价格	LOW VOLTAGE PLL CLOCK DRIVER
MPC990FA	MOTOROLA	获取价格	400MHz, PROC SPECIFIC CLOCK GENERATOR, PQFP52, PLASTIC, TQFP-52
MPC990FAR2	MOTOROLA	获取价格	400MHz, PROC SPECIFIC CLOCK GENERATOR, PQFP52, TQFP-52
MPC991	MOTOROLA	获取价格	LOW VOLTAGE PLL CLOCK DRIVER
MPC991FAR2	MOTOROLA	获取价格	ECL SERIES, PLL BASED CLOCK DRIVER, 13 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP52, TQFP-
MPC992	MOTOROLA	获取价格	LOW VOLTAGE PLL CLOCK DRIVER

与MPC9894相关文章

国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

23
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

7
AMD宣布全球裁员约1000人，调整战略聚焦增长
2024-11-14

8
英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

31

产品中心

服务支持

精选活动

关于我们

帮助中心

MPC9894

MPC9894 数据手册

与MPC9894相关器件

与MPC9894相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MPC9894

MPC9894 数据手册

与MPC9894相关器件

与MPC9894相关文章

您还可以找

您在本页遇到什么问题？