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CX28333-1X 参数 Datasheet PDF下载

CX28333-1X图片预览
型号: CX28333-1X
PDF下载: 下载PDF文件 查看货源
内容描述: 单/双/三E3 / DS3 / STS - 1线路接口单元 [Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit]
分类和应用: 电信集成电路PC
文件页数/大小: 68 页 / 549 K
品牌: CONEXANT [ CONEXANT SYSTEMS, INC ]
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2
2.0 Functional Description  
2.1 Overview  
CX28333 is a triple E3/DS3/STS-1 Line Interface Unit (LIU). It is the physical  
layer interface between the data framer (or other terminal-side equipment) and the  
electrical cable used for data transmission.  
The CX28333 LIU consists of three independent data transceivers that can  
operate over type 734/728 coaxial cable at the rates of 34.368 Mbps (E3), 44.736  
Mbps (DS3), and 51.84 Mbps (STS-1). The transmit side takes an NRZ or  
already-encoded dual rail input and encodes it into AMI B3ZS (for DS3/STS-1)  
or HDB3 (for E3) analog waveforms to be transmitted over the coaxial cable. The  
receiver side takes in the attenuated and distorted analog receive signal and  
equalizes, slices, and resynchronizes the signal before decoding it to the NRZ  
output or sending out a non-decoded dual rail.  
CX28331 and CX28332 are single- and dual-E3/DS3/STS-1 LIUs,  
respectively. In all respects, their performance and features are identical to the  
CX28333.  
The architecture of the CX2833i includes the following internal functions for  
each channel:  
Transmitter:  
AMI B3ZS/HDB3 encoder  
pulse shaper  
line driver  
Alarm Indication Signal (AIS) insertion  
transmit monitor  
Receiver:  
receive sensitivity  
Automatic Gain Control (AGC)  
receive equalizer  
Clock Recovery circuit  
Loss Of Signal (LOS) detector  
B3ZS/HDB3 decoder with bipolar violation detector  
data squelching  
100985A  
Conexant  
2-1  
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