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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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CX28331/CX28332/CX28333  
2.0 Functional Description  
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit  
2.4 Jitter Tolerance  
2.4.1 Jitter Transfer  
The receiver must meet certain jitter transfer specifications between the input and  
output jitter as a function of frequency. These specifications are only intended to  
be met with the use of a jitter attenuator. Because the CX2833i does not contain a  
jitter attenuator, one will have to be supplied externally. For reference purposes,  
the specifications are discussed in the following documents and shown in  
Figure 2-9.  
E3 rateAssume the same as DS3.  
DS3 rateBellcore GR499, section 7.3.2 and figures 7-3, 7-4, and 7-5,  
defines and describes DS3 jitter transfer.  
STS-1 rateBellcore GR253, section 5.6.2.1, defines and describes jitter  
transfer for the STS-1 rate.  
Figure 2-9. Maximum Jitter Transfer Curve Requirement  
0.1 dB  
19.9 dB  
STS-1 Category II  
DS3 Category I  
DS3 Category II  
(Note: All slopes are 20 dB/decade)  
10 Hz  
100 Hz  
1 kHz  
10 kHz  
100 kHz  
Jitter Frequency  
100985_012  
100985A  
Conexant  
2-15  
 
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