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PM4318 参数 Datasheet PDF下载

PM4318图片预览
型号: PM4318
PDF下载: 下载PDF文件 查看货源
内容描述: 八进制E1 / T1 / J1线路接口设备 [OCTAL E1/T1/J1 LINE INTERFACE DEVICE]
分类和应用:
文件页数/大小: 244 页 / 2135 K
品牌: PMC [ PMC-SIERRA, INC ]
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PRELIMINARY  
PM4318 OCTLIU  
DATASHEET  
PMC- 2001578  
ISSUE 3  
OCTAL E1/T1/J1 LINE INTERFACE DEVICE  
Figure 10 – Compliance with ITU-T Specification G.823 for E1 Input Jitter  
DPLL TOLERANCE  
WITH AMI ENCODED  
10  
215 -1 PRBS  
SINEWAVE  
JITTER  
DPLL TOLERANCE  
AMPLITUDE  
WITH HDB3 ENCODED  
P. TO P. (UI)  
IN SPEC  
REGION  
215-1 PRBS  
LOG SCALE  
1.5  
1
REC. G823  
JITTER  
TOLERANCE  
SPECIFICATION  
0.2  
0.1  
1.8  
2.4  
5
3
4
10  
10  
10  
SINEWAVE JITTER FREQUENCY, Hz - LOG SCALE  
9.4  
9.5  
Receive Jitter Attenuator (RJAT)  
The Receive Jitter Attenuator (RJAT) digital PLL attenuates the jitter present on the  
RXTIP/RXRING inputs. The attenuation is only performed when the RJATBYP register bit is a  
logic 0.  
The jitter characteristics of the Receive Jitter Attenuator (RJAT) are the same as the Transmit  
Jitter Attenuator (TJAT).  
T1 Inband Loopback Code Detector (IBCD)  
The T1 Inband Loopback Code Detection function is provided by the IBCD block. This block  
detects the presence of either of two programmable INBAND LOOPBACK ACTIVATE and  
DEACTIVATE code sequences in the receive data stream. Each INBAND LOOPBACK code  
sequence is defined as the repetition of the programmed code in the PCM stream for at least 5.1  
seconds. The code sequence detection and timing is compatible with the specifications defined  
in T1.403-1993, TA-TSY-000312, and TR-TSY-000303. LOOPBACK ACTIVATE and  
DEACTIVATE code indication is provided through internal register bits. An interrupt is generated  
to indicate when either code status has changed.  
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE  
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