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ACS8527T PDF预览

ACS8527T

更新时间: 2024-01-07 14:50:47
品牌 Logo 应用领域
商升特 - SEMTECH 开关ATM集成电路SONET集成电路SDH集成电路电信集成电路电信电路光电二极管异步传输模式
页数 文件大小 规格书
22页 404K
描述
Line Card Protection Switch for PDH, SONET or SDH Systems

ACS8527T 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Not Recommended零件包装代码:QFP
包装说明:LFQFP, QFP64,.47SQ,20针数:64
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.29应用程序:SONET;SDH
JESD-30 代码:S-PQFP-G64JESD-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 mmBase Number Matches:1

ACS8527T 数据手册

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ACS8527 MUXPLL  
Line Card Protection Switch for PDH, SONET  
or SDH Systems  
ADVANCED COMMUNICATIONS  
Description  
FINAL  
Features  
DATASHEET  
The ACS8527 is a highly integrated, single-chip, MUX with  
PLL solution for protection switching between two SECs  
(SDH/SONET Equipment Clocks) from Master and Slave  
SETS (Synchronous Equipment Timing Source) clock  
cards, for line cards in a PDH, SONET or SDH Network  
Element. The ACS8527 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 LVDS, one TTL  
‹ Two Syncs (TTL): 8 kHz FrSync & 2 KHz MFrSync  
‹ I/O frequencies configurable via hardware pins:  
The ACS8527 has two SEC reference clock input ports,  
configured for expected frequency by setting hardware  
pins.  
‹ TTL I/O ports: spot frequencies 1.544 MHz to  
77.76 MHz  
‹ LVDS output port: spot frequencies 19.44 MHz to  
The ACS8527 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.  
155.52 MHz  
‹ Digital Holdover mode on input failure  
‹ “Loss of activity” on selected input flagged on  
The ACS8527 generates two independent SEC clock  
outputs, one on a LVDS port and one on a TTL/CMOS port,  
at spot frequencies configured by hardware pins. The spot  
frequencies range from 1.544 MHz up to 155.52 MHz.  
The ACS8527 also provides an 8 kHz Frame Sync output  
and 2 kHz Multi-Frame Sync output.  
dedicated pin  
‹ Source switch under external hardware control  
‹ 7O Hz (acquisition) /35 Hz (locked) DPLL bandwidth  
‹ 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  
‹ Lead (Pb)-free version available (ACS8527T). RoHS  
Block Diagram  
and WEE compliant  
Figure 1 Block Diagram of the ACS8527 MUXPLL  
IP_FREQ  
SONSDHB  
LOS_ALARM  
SRCSW  
SEC Outputs:  
01 (LVDS)  
2 x SEC TTL inputs  
Output  
Port  
Frequency  
Selection  
02 (TTL)  
SEC1  
Input Frequencies  
8kHz  
SEC Inputs:  
Input  
SEC Port  
Selector  
DPLL  
APLL  
Sync Outputs:  
1.544 MHz  
2.048 MHz  
6.48 MHz  
19.44 MHz  
25.92 MHz  
38.88 MHz  
51.84 MHz  
77.76 MHz  
SEC2  
MFrSync 2 kHz (TTL)  
FrSync 8 kHz (TTL)  
Output Frequencies/MHz  
01 Output:  
19.44  
02 Output:  
1.544  
2.048  
TCK  
TDI  
TMS  
TRST  
TDO  
IEEE  
1149.1  
JTAG  
Chip  
Clock  
Generator  
25.92  
34.368 (E3) 3.088  
38.88  
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  
XO  
OP_FREQ1  
OP_FREQ2  
F8527D_001BLOCKDIA_01  
Revision 4.01/June 2006 © Semtech Corp.  
Page1  
www.semtech.com  

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