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PM5363-BI 参数 Datasheet PDF下载

PM5363-BI图片预览
型号: PM5363-BI
PDF下载: 下载PDF文件 查看货源
内容描述: SONET / SDH支路单元荷载处理器, 622兆比特/ s接口 [SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S INTERFACES]
分类和应用: ATM集成电路SONET集成电路SDH集成电路电信集成电路电信电路异步传输模式
文件页数/大小: 459 页 / 3435 K
品牌: PMC [ PMC-SIERRA, INC ]
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PM5363 TUPP+622  
TUPP+622  
DATASHEET  
PMC-1981421  
ISSUE 4  
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S  
INTERFACES  
The RTOP provides tributary performance monitoring of incoming tributaries. Bit  
interleaved parity of the incoming tributaries is computed and compared with the  
BIP-2 code encoded in the V5 byte of the tributary. Errors between the computed  
and received values are accumulated. RTOP also accumulates remote error  
indication codes. Incoming path signal label is debounced and compared with the  
provisioned value. Path signal label unstable, path signal label mismatch and  
change of path signal label event are identified.  
10.4.1 Clock Generator  
The clock generator derives various clocks from the 19.44 MHz system clock and  
distributes them to other blocks within the tributary path overhead processor. The  
overall design is totally synchronous, with processing occurring at a 6.48 MHz  
rate in each tributary path overhead processor.  
10.4.2 Timing Generator  
The timing generator identifies the incoming tributary being processed at any  
given point in time. Based on the configuration of the RTOP (it can process  
various mixes of tributary types), the incoming timing generator extracts the STS-  
1 SPE, VC3, or a single TUG3 from a VC4, and identifies the bytes within these  
envelopes that correspond to various types of overhead and those that carry  
specific tributaries to be processed. The identification of specific tributaries allows  
the error monitor and extract blocks to be time-sliced across the mix of tributaries  
present in the incoming data stream.  
10.4.3 Error Monitor  
The error monitor block is a time-sliced state machine. It relies on the timing  
generator block to identify the tributary being processed. The error monitor block  
contains a set of 12-bit counters that are used to accumulate tributary path BIP-2  
errors, and a set of 11-bit counters to accumulate remote error indications (REI).  
The contents of the counters may be transferred to a holding RAM, and the  
counters reset under microprocessor control.  
Tributary path BIP-2 errors are detected by comparing the tributary path BIP-2  
bits in the V5 byte extracted from the current multiframe, to the BIP-2 value  
computed for the previous multiframe. BIP-2 errors may be accumulated on a  
block or nibble basis as controlled by software configurable registers. Remote  
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE  
101  
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