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CN8380

更新时间： 2024-09-16 22:28:43
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科胜讯 - CONEXANT /
页数 文件大小 规格书
91页 813K
描述
integrated quad line interface unit unit for both 1.544 Mbps (T1) and 2.048 Mbps (E1) applications

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CN8380 数据手册

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Advance Information  
This document contains information on a product under development. The parametric information  
contains target parameters that are subject to change.  
CN8380  
Quad T1/E1 Line Interface  
The CN8380 is a fully integrated quad line interface unit for both 1.544 Mbps (T1) and  
2.048 Mbps (E1) applications. It is designed to complement T1/E1 framers or operate as  
a stand-alone line interface to synchronous or plesiochronous mappers and  
multiplexers. The device can be controlled through a host mode serial port or by  
hardware mode operation, where device control and status are obtained through  
non-multiplexed dedicated pins. Many of these pins are also dedicated to individual  
channels for maximum flexibility and for use in redundant systems. Integrated in the  
CN8380 device is a clock rate adapter (CLAD), which provides various low-jitter  
programmable system clock outputs. The receive section of the CN8380 is designed to  
recover encoded signals from lines having up to 12 dB of attenuation. The transmit  
section consists of a programmable, precision pulse shaper.  
Distinguishing Features  
•
Four T1/E1 short haul line interfaces  
in a single chip  
•
•
On-chip CLAD /system synchronizer  
Digital (crystal-less) jitter attenuators  
selectable for transmitter/receiver on  
each line interface  
•
•
Meets AT&T pub 62411 jitter specs  
Meets ITU G.703, ETS 300 011  
(PSTNX) Connections  
•
•
AMI/B8ZS/HDB3 line codes  
Host serial port or hardware only  
control modes  
•
•
On-chip receive clock recovery  
Common transformers for 120/75 Ω  
E1 and 100 Ω T1  
•
•
•
Low-power 3.3 V power supply  
Transmitter performance monitor  
Compatible with latest ANSI, ITU-T,  
and ETSI standards  
Functional Block Diagram  
•
•
128-pin MQFP package  
Remote and local loopbacks  
Clock  
and  
Data  
RPOSO[1]  
RTIP[1]  
Re-  
ceiver  
ZCS  
Decode  
RLOS  
Detect  
RNEGO[1]  
RCKO[1]  
RRING[1]  
Recovery  
Applications  
Jitter  
Attenuator  
•
•
•
•
SONET/SDH multiplexers  
T3 and E3/E4 (PDH) multiplexers  
ATM multiplexers  
Voice compression and voice  
processing equipment  
WAN routers and bridges  
Digital loop carrier terminals (DLC)  
HDSL terminal units  
TPOSI[1]  
TNEGI[1]  
TCLK[1]  
XTIP[1]  
Pulse  
Shaping  
ZCS  
Decode  
Driver  
TAIS  
XRING[1]  
LIU #1  
LIU #2  
LIU #3  
LIU #4  
•
•
•
•
•
•
•
•
Remote concentrators  
JTAG  
Test Port  
Clock Rate Adapter  
Control  
47  
Central office equipment  
PBXs and rural switches  
PCM/voice channel banks  
Digital access and cross-connect  
systems (DACS)  
4
5
JTAG  
Test  
Signals  
Control and Host  
Alarm Signals Serial  
10 MHz Variable 1.544 2.048 32.768 8 kHz–32 MHz  
Fixed Reference MHz MHz MHz Selectable  
Port Reference  
8380_001  
Data Sheet  
Advance Information  
N8380DSA  
April 26, 1999  
1234567...91

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