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PM5365-PI 参数 Datasheet PDF下载

PM5365-PI图片预览
型号: PM5365-PI
PDF下载: 下载PDF文件 查看货源
内容描述: VT / TU映射器和M13多路复用器 [VT/TU MAPPER AND M13 MULTIPLEXER]
分类和应用: 复用器
文件页数/大小: 244 页 / 1139 K
品牌: PMC [ PMC-SIERRA, INC ]
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STANDARD PRODUCT  
PM5365 TEMAP  
DATASHEET  
PMC-1991148  
ISSUE 3  
HIGH DENSITY VT/TU MAPPER  
AND M13 MULTIPLEXER  
STM-1/VC4 TUG3 or STM-1/VC3 otherwise no loopback data will get through.  
The ingress data path is not affected by the telecom line loopback. This loopback  
is only available for VT1.5/VT2/TU11/TU12 mapped tributaries. DS3 mapped  
tributaries must use the DS3 line loopback. The Telecom bus line loopback mode  
is shown diagrammatically in Figure 29.  
Figure 29: Telecom Line Loopback Diagram  
VTPP  
VT/TU  
RTDM  
Receive  
LDDATA[7:0]  
LDDP  
LDPL  
Payload  
Processor  
Tributary  
Path O/H  
LDC1J1  
LADATA[7:0]  
LADP  
TTOP  
VTPP  
VT/TU  
Transmit  
Tributary  
Path O/H  
LAPL  
Payload  
Processor  
LAC1J1V1  
LAC1  
12.7 SBI Bus Data Formats  
The TEMAP uses the Scaleable Bandwidth Interconnect (SBI) bus as a high  
density link interconnect with devices processing T1s, E1s, DS3s and  
transparent virtual tributaries. The SBI bus is a multi-point to multi-point bus  
capable of interconnecting up to three TEMAP devices in parallel with other link  
layer or tributary processing devices.  
Multiplexing Structure  
The SBI structure uses a locked SONET/SDH structure fixing the position of the  
TU-3 relative to the STS-3/STM-1. The SBI is also of fixed frequency and  
alignment as determined by the reference clock (SREFCLK) and frame indicator  
signal (SC1FP). Frequency deviations are compensated by adjusting the  
location of the T1/E1/DS3/TVT1.5/TVT2 channels using floating tributaries as  
determined by the V5 indicator and payload signals (SDV5, SAV5, SDPL and  
SAPL). TVTs also allow for synchronous operation where SONET/SDH tributary  
Proprietary and Confidential to PMC-Sierra, Inc. and for its Customers’ Internal Use  
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