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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  
therefore the TNEG is fed directly to the RNEG input. This diagnostic loopback  
can be used when configured as a multiplexer or as a framer only. The DS3  
loopback mode is shown diagrammatically in Figure 25.  
Figure 25: DS3 Diagnostic Loopback Diagram  
DS3 Line Loopback  
DS3 Line Loopbacks allow the received DS3 streams to be looped back into the  
transmit DS3 paths, overriding the DS3 streams created internally by the  
multiplexing of the lower speed tributaries. The transmit signals on TPOS/TDAT  
and TNEG/TMFP are substituted with the receive signals on RPOS/RDAT and  
RNEG/RLCV. The TCLK signal is also substituted with the receive DS3 clock,  
RCLK. While this mode is active, AIS may be substituted for the DS3 payload  
being transmitted on the TPOS/TDAT and TNEG/TMFP outputs. Note that the  
transmit interface must be configured to be the same as the DS3 FRMR receive  
interface for this mode to work properly. The DS3 line loopback mode is shown  
diagrammatically in Figure 26. There is a second form of line loopback which  
only loops back the DS3 payload. In this mode the DS3 framing overhead is  
regenerated for the received DS3 stream and then retransmitted. Line loopback  
is selected with the LLOOP bit in the DS3 Master Data source register and  
payload loopback is selected by the PLOOP bit in the same register.  
Proprietary and Confidential to PMC-Sierra, Inc. and for its Customers’ Internal Use  
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