Datasheet > STC5420

STC5420

更新时间： 2024-11-19 21:13:03

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
70页	2104K
描述
Clock Recovery Circuit, 1-Func, PQFP100, ROHS COMPLIANT, TQFP-100

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STC5420 数据手册

STC5420

Synchronous Clock for SETS

Data sheet

Description

Features

Functional Specification

The RoHS 6/6 compliant STC5420 is a single chip clock

synchronization solution for applications in SDH/SETS,

SONET, and Synchronous Ethernet network elements. The

device is fully compliant with ITU-T G.813 option 1 and 2,

G.8262 EEC Opt1 and Opt2 and Telcordia GR1244 and

GR253.

- Complies with ITU-T G.813 Opt1/Opt2, G.8262 EEC

Opt1/Opt2, Telcordia GR1244 and GR253 (Stratum3/4E/

4/SMC)

- Two timing generators T0 and T4; T4 may lock to T0’s

synchronized output

- Supports Master/Slave and Multiple-Master redundant

application (T0 timing generator only)

The STC5420 accepts 12 clock reference inputs and gener-

ates 10 synchronized clock outputs: CLK1~CLK8, frame

pulse clock CLK8K at 8kHz, and frame pulse clock CLK2K

at 2kHz. CLK1~CLK8 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 automatic, manual, and

hard-wired manual.

- Provides programmable compensation for phase delay

between master and slave unit, in 0.1ns steps

- Accepts external oscillator at frequency of 10MHz,

12.8MHz, 19.2MHz,or 20MHz with programming

- Accepts 12 clock reference inputs

- Supports frequency auto detection or manually accept-

able frequency for reference inputs. Each of them is

monitored for activity and quality

Two independent timing generators, T0 and T4, may oper-

ate in the Freerun, Synchronized, Pseudo Holdover, and

Holdover mode. Each timing generator includes a DSP-

based PLL. Synchronized mode external timing while fre-

erun and holdover mode are self-timing. T0 supports Mas-

ter/Slave and Multiple Master operation for redundant

design. T4 only supports master operation. DSP-based PLL

technology removes any external component except the

oscillator. It provides excellent performance and reliability to

STC5420.

- Automatic/manual/hard-wired manual reference select

- Outputs 10 synchronized clock outputs, including 2

frame pulse clocks CLK8K and CLK2K

- 10 clock synthesizers generate frequencies

- Programmable phase skew in synthesizer level

- Phase-align or hit-less reference locking/switching

- Programmable loop bandwidth, from 0.1Hz to 100Hz

- Supports bus interface: Intel, Motorola, Multiplex, SPI

- Single 3.3V operation

The STC5420 is clocked by an external oscillator (TCXO or

OCXO). Using a well-chosen external oscillator ensures the

STC5420 meet the required specification and standards.

- IEEE 1149.1 JTAG boundary scan

- Available in TQFP100 package

Synthesizer G₁

Synthesizer G₂

CLK1, LVPECL/LVDS

CLK2, LVPECL/LVDS

SRCSW

Master_Slave

EX_SYNC

Frame8K

Frame2K

Composite

CLK8K

CLK2K

Synth

CLK3

CLK4

Synthesizer G₃

Synthesizer G₄

T0 Timing

Generator

CLK5

CLK6

Synthesizer G₅

Synthesizer G₆

Synthesizer G₇

Ref

Ref Clk

10 LVCMOS

Monitor

CLK7

CLK8

2 LVPECL/LVDS

Synthesizer G₈

Synthesizer G_T4

T4 Timing

Generator

TCXO

OCXO

P Interface

Figure 1:Functional Block Diagram

Page 1 of 70 TM112 Rev: 2.0

Date: September 28, 2011

12 3 4 5 6 7...70

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与STC5420相关器件

型号	品牌	获取价格	描述	数据表
STC5420-I	CONNOR-WINFIELD	获取价格	Clock Recovery Circuit, 1-Func, PQFP100, ROHS COMPLIANT, TQFP-100
STC5423	CONNOR-WINFIELD	获取价格	Synchronous Clock for SETS
STC5423-I	CONNOR-WINFIELD	获取价格	Clock Recovery Circuit, 1-Func, PQFP100, ROHS COMPLIANT, TQFP-100
STC5425	CONNOR-WINFIELD	获取价格	Clock Recovery Circuit, 1-Func, PQFP64, ROHS COMPLIANT, TQFP-64
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

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