參數(shù)資料
型號: PM7351-BI
廠商: PMC-SIERRA INC
元件分類: 數(shù)字傳輸電路
英文描述: OCTAL SERIAL LINK MULTIPLEXER
中文描述: ATM/SONET/SDH SUPPORT CIRCUIT, PBGA304
封裝: 31 X 31 MM, 1.51 MM HEIGHT, 1.27 MM PITCH, SBGA-304
文件頁數(shù): 108/174頁
文件大?。?/td> 1790K
代理商: PM7351-BI
RELEASED
PM7351 S/UNI-VORTEX
DATA SHEET
PMC-1980582
ISSUE 5
OCTAL SERIAL LINK MULTIPLEXER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
98
Registers 0x089, 0x0A9, 0x0C9, 0x0E9, 0x109, 0x129, 0x149, 0x169:
Upstream Round Robin Weight
Bit
Type
Function
Default
Bit 7
Unused
X
Bit 6
Unused
X
Bit 5
Unused
X
Bit 4
Unused
X
Bit 3
Unused
X
Bit 2
Unused
X
Bit 1
R/W
RRW[1]
0
Bit 0
R/W
RRW[0]
0
These registers differentiate the access to the RDAT[15:0] bandwidth for each
serial link. The number of opportunities queued cells have of being transferred
over RDAT[15:0] is proportional to the programmed weight. Under uncongested
conditions, a higher weight will result in a slightly lower cell delay variation (CDV).
Under congested situations (i.e. the instantaneous offered load exceeds the
RDAT[15:0] bandwidth), the ultimate maximum throughput of a link before cell
loss (at the cell buffers on the line card) is proportional to the weighting.
Note that if several S/UNI-VORTEX devices reside on a RDAT[7:0] bus, the
allocation of bandwidth between the S/UNI-VORTEX devices is dependant on
the polling algorithm employed by the bus master.
RRW[1:0]
The Round Robin Weight (RRW(1:0]) selects one of four possible polling
weights for the associated serial link.
RRW[1:0]
Weight
01
1
10
2
11
3
00
4
相關(guān)PDF資料
PDF描述
PM7364 Frame Engine and Datalink Manager
PM7364-BI FRAME ENGINE AND DATA LINK MANAGER
PM7366 FRAME ENGINE AND DATA LINK MANAGER
PM7366-BI TVS BI-DIR 30V 1500W DO-201
PM7366-PI FRAME ENGINE AND DATA LINK MANAGER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PM-736 制造商:Eclipse Tools 功能描述:
PM7364 制造商:PMC 制造商全稱:PMC 功能描述:FRAME ENGINE AND DATA LINK MANAGER
PM7364-BI 制造商:PMC-Sierra 功能描述:PROTOCOL CONTROLLER, 256 Pin, BGA
PM7366 制造商:PMC 制造商全稱:PMC 功能描述:FRAME ENGINE AND DATA LINK MANAGER