Datasheet > ACS8526

ACS8526

更新时间： 2024-01-06 10:59:25

品牌	Logo	应用领域
商升特 - SEMTECH		开关光电二极管
页数	文件大小	规格书
74页	801K
描述
Line Card Protection Switch for PDH, SONET or SDH Systems

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ACS8526 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	QFP
包装说明：	LFQFP, QFP64,.47SQ,20	针数：	64
Reach Compliance Code：	compliant	HTS代码：	8542.39.00.01
风险等级：	5.41	应用程序：	SONET;SDH
JESD-30 代码：	S-PQFP-G64	JESD-609代码：	e3
长度：	10 mm	湿度敏感等级：	3
功能数量：	1	端子数量：	64
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	LFQFP
封装等效代码：	QFP64,.47SQ,20	封装形状：	SQUARE
封装形式：	FLATPACK, LOW PROFILE, FINE PITCH	峰值回流温度（摄氏度）：	260
电源：	3.3,3.3/5 V	认证状态：	Not Qualified
座面最大高度：	1.6 mm	子类别：	Digital Transmission Interfaces
最大压摆率：	0.2 mA	标称供电电压：	3.3 V
表面贴装：	YES	电信集成电路类型：	ATM/SONET/SDH SUPPORT CIRCUIT
温度等级：	INDUSTRIAL	端子面层：	MATTE TIN
端子形式：	GULL WING	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	10 mm	Base Number Matches：	1

ACS8526 数据手册

ACS8526 LC/P LITE

Line Card Protection Switch for PDH, SONET

or SDH Systems

ADVANCED COMMUNICATIONS

Description

FINAL

Features

DATASHEET

The ACS8526 is a highly integrated single-chip solution

for protection switching between two SECs (SDH/SONET

Equipment Clocks) from Master and Slave SETS clock

cards, for line cards in a PDH, SONET or SDH Network

Element. The ACS8526 has fast activity monitors on the

inputs and will raise a flag on a pin if there is a loss of

activity on the currently selected input. The protection

switching between the input reference clock sources is

controlled by an external pin.

Line card protection switch - partners Semtech SETS

devices for Stratum 3E/3/4E/4 PDH, SONET or SDH

applications

High performance DPLL/APLL solution

Output jitter compliant to STM-1

Two independent SEC inputs ports (TTL)

Four independent output ports:

Two clock ports: one PECL/LVDS, one TTL

Two Syncs (TTL): 8 kHz FrSync & 2 KHz MFrSync

TTL I/O ports: spot frequencies 2 kHz to 77.76 MHz

PECL/LVDS port: spot frequencies 2 kHz to 311 MHz

N x E1/DS1 mode

The ACS8526 has two SEC reference clock input ports,

configured for expected frequency by setting hardware

pins or by writing to registers via the serial interface.

The ACS8526 can perform frequency translation,

converting, for example, an 8 kHz SEC input clock from a

backplane into a 155.52 MHz clock for local line cards.

Programmable pulse width and polarity on Syncs

SONET/SDH frequency translation

Digital Holdover mode on input failure

The ACS8526 generates two independent SEC clock

outputs, one on a PECL/LVDS port and one on a

TTL/CMOS port, at spot frequencies configured by

hardware pins, or by writing to registers via the serial

interface. The hardware selectable spot frequencies

range from 1.544 MHz up to 155.52 MHz, with further

options for N x E1/DS1 and 311.04 MHz via register

selection. The ACS8526 also provides an 8 kHz Frame

Sync output and 2 kHz Multi-Frame Sync output, both with

programmable pulse width and polarity.

Separate activity monitors and register alarms on

each input.

“Loss of activity” on selected input flagged on

dedicated pin

Source switch under external hardware control

PLL “Locked” and “Acquisition” bandwidth selectable

from 18, 35 or 70 Hz

Configurable via serial interface or hardware pins

Output clock phase continuity to GR-1244-CORE^[13]

Single 3.3 V operation, 5 V I/O compatible

IEEE 1149.1 JTAG Boundary Scan is supported

Operating temperature (ambient) of -40 to +85°C

Available in LQFP 64 package

Advanced configuration possibilities are available via the

serial port (which can be SPI compatible), however the

basic configuration of I/O frequencies and SONET/SDH

selection by hardware make the device suitable for

standalone operation, i.e., no need for a microprocessor.

Lead (Pb)-free version available (ACS8526T), RoHS

Block Diagram

and WEEE compliant.

Figure 1 Block Diagram of the ACS8526 LC/P LITE

LOS_ALARM

IP_FREQ

SONSDHB

SEC Outputs:

DPLL1

DPLL2

01 (LVDS/PECL)

MUX

2 x SEC TTL inputs

APLL2

Output

Port

Frequency

Selection

02 (TTL)

SEC1

SEC Inputs:

Programmable

Frequencies

N x 8 kHz

1.544 MHz

2.048 MHz

6.48 MHz

Input

SEC Port

Selector

Digital Feedback

APLL3

Sync Outputs:

E1/DS1

Synthesis

SEC2

MFrSync 2 kHz (TTL)

FrSync 8 kHz (TTL)

MUX

APLL 1

19.44 MHz

Output Frequencies/MHz

SRCSW

25.92 MHz

38.88 MHz

51.84 MHz

77.76 MHz

01 Output:

19.44

02 Output:

1.544

TCK

TDI

TMS

TRST

TDO

Chip

Clock

Generator

IEEE

1149.1

JTAG

25.92

2.048

SPI Compatible

Serial Interface

Port

Priority

Table

34.368 (E3)

38.88

3.088

19.44

44.736 (DS3) 25.92

51.84

34.368 (E3)

77.76

38.88

155.52

44.736 (DS3)

51.84

77.76

TCXO or

F8526D_001BLOCKDIA_03

OP_FREQ1

OP_FREQ2

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型号	品牌	描述	获取价格	数据表
ACS8526LC	SEMTECH	Line Card Protection Switch for PDH, SONET or SDH Systems	获取价格
ACS8526P	SEMTECH	Line Card Protection Switch for PDH, SONET or SDH Systems	获取价格
ACS8526T	SEMTECH	Line Card Protection Switch for PDH, SONET or SDH Systems	获取价格
ACS8527	SEMTECH	Line Card Protection Switch for PDH, SONET or SDH Systems	获取价格
ACS8527T	SEMTECH	Line Card Protection Switch for PDH, SONET or SDH Systems	获取价格
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