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CX28331 参数 Datasheet PDF下载

CX28331图片预览
型号: CX28331
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:
文件页数/大小: 68 页 / 549 K
品牌: CONEXANT [ CONEXANT SYSTEMS, INC ]
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1.0 Pin Description  
CX28331/CX28332/CX28333  
1.1 Pin Assignments  
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit  
Table 1-2. CX2833i-3x Pin Definitions (1 of 8)  
Pin #  
Signal Name  
Description  
I/O/P  
Notes  
CX28331-3x CX28332-3x CX28333-3x  
Coaxial Line Pins  
17  
18  
7
7
RLINEP  
RLINE1P  
RLINEM  
RLINE1M  
RLINE2P  
Ch1 positive  
receive data  
I
I
Differential inputs for each channel from its  
respective receive coax line. The RX expects  
balanced differential inputs, usually  
achieved using a 1:1 transformer.  
The inputs are internally DC biased to 1.9 V.  
8
8
Ch1 negative  
receive data  
27  
17  
Ch2 positive  
receive data  
I
I
28  
18  
27  
28  
RLINE2M Ch2 negative  
receive data  
RLINE3P  
Ch3 positive  
receive data  
I
RLINE3M Ch3 negative  
receive data  
I
12  
13  
2
2
TLINEP  
TLINE1P  
TLINEM  
TLINE1M  
TLINE2P  
Ch1 positive  
transmit data  
O
Differential, coax-driver balanced outputs  
for pulse-shaped AMI B3ZS/HDB3 encoded  
waveforms for each channel.  
3
3
Ch1 negative  
transmit data  
O
These pins should be connected to the  
primary side of the 1:1 transformer through  
two backmatch resistors (see Appendix B).  
22  
12  
Ch2 positive  
transmit data  
O
O
O
O
23  
13  
22  
23  
TLINE2M  
TLINE3P  
TLINE3M  
Ch2 negative  
transmit data  
Ch3 positive  
transmit data  
Ch3 negative  
transmit data  
1-14  
Conexant  
100985A