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PM7340 参数 Datasheet PDF下载

PM7340图片预览
型号: PM7340
PDF下载: 下载PDF文件 查看货源
内容描述: S / UNI ATM反向多路复用, 8个环节 [S/UNI INVERSE MULTIPLEXING FOR ATM, 8 LINKS]
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: 334 页 / 2670 K
品牌: PMC [ PMC-SIERRA, INC ]
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PM7340 S/UNI-IMA-8  
PRELIMINARY  
INVERSE MULTIPLEXING OVER ATM  
DATA SHEET  
PMC-2001723  
ISSUE 3  
INVERSE MULTIPLEXING OVER ATM  
Figure 18  
- Snapshot of DCB Buffers after deletion of links from group  
DCB  
DCB  
DCB  
DCB  
Link 0  
Link 1  
Link 2  
Link3  
Write  
Pointer 0  
15  
14  
13  
11  
9
Removed  
from  
Removed  
from  
Write  
Pointer 1  
group  
group  
12  
10  
8
7
5
6
3
4
Group  
Read  
Pointer  
1
2
10.2.4.3  
IMA Link Error Handling  
For IMA operation, the RDAT is responsible for detecting Loss of IMA Frame  
defects (LIF), Idle Cells on IMA Links, Loss of Cell Delineation defects (LCD), and  
DCB overruns/underruns that contribute to Loss of Delay Synchronization  
(LODS). This information is forwarded to the RIPP with the ICP messages for  
processing and reporting.  
10.2.4.3.1  
IMA Error/Maintenance State Machine (IESM)  
A state machine is maintained for the LIF defect detection. This state machine is  
called the IMA Error/Maintenance State machine [IESM]. The state diagram for  
the IESM is shown in Figure 19. The RDAT maintains an IESM for each link. The  
LIF Defect state is the initial state for this process, thus all links will initially come  
up in the LIF condition.  
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE  
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