Datasheet > STC5425

STC5425

更新时间： 2024-11-23 19:38:43

品牌	Logo	应用领域
CONNOR-WINFIELD		ATM 异步传输模式电信电信集成电路
页数	文件大小	规格书
48页	778K
描述
Clock Recovery Circuit, 1-Func, PQFP64, ROHS COMPLIANT, TQFP-64

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中文翻译

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STC5425 数据手册

STC5425

Line Card Clock

Data sheet

Description

Features

Functional Specification

- Suitable for SONET, SDH, and Synchronous Ethernet

applications

The RoHS 6/6 compliant STC5425 is a single chip

clock synchronization solution for line card applica-

tions in SDH, SONET, and Synchronous Ethernet

network elements.

- Supports 4 different frequencies of external oscillator

upon soft-reset: 10MHz, 12.8MHz, 19.2MHz, 20MHz

- Provides three 2kHz or 8kHz external frame sync input

- Accepts 5 clock reference inputs

The STC5425 accepts 5 clock reference inputs, 3

external frame sync inputs (EX_SYNC1, 2, 3) and

generates 4 synchronized clock outputs. Synchro-

nized outputs may be programmed for wide variety of

frequencies from 1MHz up to 156.25MHz, in 1kHz

steps. Reference inputs are individually monitored for

activity and quality. Reference selection may be auto-

matic, manual, or hard-wired manual.

- Supports automatically frequency detection or manually

acceptable frequency. Each reference input is monitored

for activity and quality

- Automatic, manual, and hard-wired manual reference

selection

- Outputs 4 synchronized clock outputs, including 2 frame

pulse clocks

- Frequency translation of input clock to a different local

line card clock

The timing generator may operate in the Freerun,

Synchronized, and Holdover. It includes a DSP-

based PLL. Synchronized mode is external timing

while freerun and holdover mode are self-timing.

DSP-based PLL technology removes any external

component except the oscillator. It provides excellent

performance and reliability to STC5425.

- 3 clock synthesizers generate frequencies

- Phase-align locking or hit-less reference switching

- Programmable loop bandwidth, from 13Hz to 100Hz

- Programmable phase skew in synthesizer level

- SPI bus interface

The STC5425 is clocked by an external oscillator,

either a stable TCXO or XO, as required by applica-

tion.

- Single 3.3V operation

- IEEE 1149.1 JTAG boundary scan

- Available in TQFP64 package

SRCSW

8kHz

Synth

CLK8K

CLK2K

2kHz

EX_SYNC 1

EX_SYNC 2

EX_SYNC 3

Timing

Synthesizer G₁

Synthesizer G₄

CLK1, LVPECL/LVDS

Generator

CLK2

Ref

Monitor

Ref Clk

3 LVCMOS

2 LVPECL/LVDS/LVCMOS

TCXO

SPI Interface

Figure 1:Functional Block Diagram

Page 1 of 48 TM113

Rev: P1.3

Date: September 20, 2011

Preliminary

12 3 4 5 6 7...48

中文翻译

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与STC5425相关器件

型号	品牌	获取价格	描述	数据表
STC5428	CONNOR-WINFIELD	获取价格	ATM/SONET/SDH Clock Recovery Circuit,
STC5429	CONNOR-WINFIELD	获取价格	Telecom IC, PQCC64,
STC5455	CONNOR-WINFIELD	获取价格	Synchronous Clock for SETS
STC5551F	KODENSHI	获取价格	NPN Silicon Transistor
STC5DNF30V	STMICROELECTRONICS	获取价格	Dual N-channel 30V - 0.032з - 4.5A - TSSOP8 2
STC5NF20V	STMICROELECTRONICS	获取价格	N-CHANNEL 20V - 0.030ohm - 5A TSSOP8 2.7V-DRI
STC5NF20V_07	STMICROELECTRONICS	获取价格	N-channel 20V - 0.030ohm - 5A - TSSOP8 2.7V-drive STripFET TM ll Power MOSFET
STC5NF20V_0710	STMICROELECTRONICS	获取价格	N-channel 20V - 0.030Ω - 5A - TSSOP8 2.7V-dri
STC5NF30V	STMICROELECTRONICS	获取价格	N-CHANNEL 30V - 0.027 OHM - 5A TSSOP8 2.7V-DRIVE STripFET II POWER MOSFET
STC5NF30V_06	STMICROELECTRONICS	获取价格	N-channel 30V - 0.027ヘ - 5A - TSSOP8 2.7V-dri

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