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參數(shù)資料
| 型號(hào)： | PM7323 |
| 廠商： | PMC-SIERRA INC |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | ROUTING CONTROL, MONITORING, & POLICING 200 MBPS |
| 中文描述： | ATM/SONET/SDH SUPPORT CIRCUIT, PQFP240 |
| 封裝： | PLASTIC, QFP-240 |
| 文件頁(yè)數(shù)： | 68/219頁(yè) |
| 文件大?。?/td> | 695K |
| 代理商： | PM7323 |
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STANDARD PRODUCT
PM7323 RCMP-200
DATASHEET
PMC-960543
ISSUE 2
ROUTING CONTROL, MONITORING, & POLICING
200 MBPS
Proprietary and Confidential to PMC-Sierra, Inc.
and for its Customer’s Internal Use.
57
Block Error Detection Code - This field is the even parity BIP-16 error detection
code computed over the information field of the block of user cells transmitted
after the last monitoring cell.
Time Stamp - The default of all ones is inserted.
Block Error Result - The generated cell is a forward monitoring cell; therefore,
this field is coded as 6AH.
Lost/Misinserted Cell Count - The generated cell is a forward monitoring cell;
therefore, each byte of this field is coded as 6AH.
A backward reporting cell is output for each forward monitoring cell received at
an OAM flow end-point if the BACKRPT bit is a logic 1 and the SRCPM bit is a
logic 0.
The PM0 bit of the VC table must be set to '1' initially to suppress the
accumulation of error counts upon the arrival of the first forward Performance
Management cell. This bit is cleared upon receiving the first PM cell.
If the RCMP-200 is a sink of PM cells, all received user cells result in updating of
the current cell count and BIP16 fields of the VC table. If the RCMP-200 is a
source of PM cells, only user cells which are not discarded by the UPC function
result in an updating of the current cell count and BIP16 fields of the VC table.
For the purposes of Performance Management at the F4 (VPC) level , cells with
VCI values of 1, 2, 5 or 16 are considered user cells. For the purposes of
Performance Management at the F5 (VCC) level, cells with PTI values of 000
through 011 are considered user cells.
If the "PM_activate" bit is a logic 1 and the RCMP-200 is not the source of
monitoring cells (i.e. the SRCPM VC table bit is logic 0), the fields of received
Forward Monitoring and Monitoring/Reporting cells are compared with the
accumulated data for the block of user cells since the latest PM cell. Receipt of a
monitoring cell results in the updating of the statistics located at SA[19:16]=1111:
Lost Cell Count - The Lost Cell Count is incremented by the number of lost cells
if the number of received cells in the block is less than the number that are
expected based on the contents of the TUC field. If the number of lost cells
equals or exceeds the threshold set by the MLOST[7:0] register bits, the SECB
count is incremented and the lost cell accumulation is suppressed.
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| PM7324-BI | S/UNI-ATM LAYER SOLUTION |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PM7323-SI | 制造商:PMC 制造商全稱:PMC 功能描述:ROUTING CONTROL, MONITORING, & POLICING 200 MBPS |
| PM7324 | 制造商:PMC 制造商全稱:PMC 功能描述:S/UNI-ATM LAYER SOLUTION |
| PM7324BI | 制造商:PMC-Sierra 功能描述: |
| PM7324-BI | 制造商:PMC 制造商全稱:PMC 功能描述:S/UNI-ATM LAYER SOLUTION |
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