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PM7325-TC 参数 Datasheet PDF下载

PM7325-TC图片预览
型号: PM7325-TC
PDF下载: 下载PDF文件 查看货源
内容描述: S / UNI - ATLAS -3200电信标准产品数据表初步 [S/UNI-ATLAS-3200 Telecom Standard Product Data Sheet Preliminary]
分类和应用: ATM集成电路SONET集成电路SDH集成电路电信电路异步传输模式
文件页数/大小: 432 页 / 2222 K
品牌: PMC [ PMC-SIERRA, INC ]
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S/UNI®-ATLAS-3200 Telecom Standard Product Data Sheet  
Preliminary  
OBCIF_PHYID  
If this bit is logic 1, then the PHYID field of the VC Linkage Table overwrites a portion of  
the prepended bytes of cells routed to the Output Backwards Cell Interface, as shown in Table  
38. If this bit is logic 0, then these bits will not be overwritten, but cells sent to the OBCIF  
will not be able to be correctly reinserted by an S/UNI-ATLAS-3200 Input BCIF.  
OBCIF_Bwd_VCRA  
If this bit is logic 1, then the Backwards Direction VCRA field of the VC Table overwrites a  
portion of the prepended bytes of cells routed to the Output Backwards Cell Interface, as  
shown in Table 38. If this bit is logic 0, then these bits will not be overwritten, but cells sent  
to the OBCIF must be able to be searched correctly by the receiving S/UNI-ATLAS-3200.  
OBCIF_Cell_Info  
If this bit is logic 1, then 9 bits of information about the cell and its associated connection  
overwrite a portion of the prepended bytes of cells routed to the Output Backwards Cell  
Interface, as shown in Table 38 and Table 39. If this bit is logic 0, then these bits will not be  
overwritten.  
Xlate_To_OBCIF  
If this bit is logic 1, then cells routed to the Output Backwards Cell Interface will be header-  
translated as if they were destined to the Output Cell Interface, i.e. as controlled by the  
XVPIVCI, XPREPO, XHEC, XUDF, and Cell_Info_to_OCIF bits. The OBCIF_Cell_Info,  
OBCIF_PHYID, and OBCIF_Bwd_VCRA bits will still cause overwriting of portions of the  
cell. This bit is normally logic 1 when the Search_From_IBCIF bit is logic 1. When this bit  
is logic 0, cells routed to the Output BCIF are not translated, and cells generated to the Output  
BCIF carry the VPI and VCI programmed into the VPI and VCI fields of the VC Table.  
IBCIF_P2_To_HECUDF  
When this bit is logic 1, then all cells from the Input Backwards Cell Interface will have the  
Prepend/Postpend 2 word of the VC Table inserted into their HEC and UDF. This feature is  
used if the HEC and UDF are used as a routing word or identification tag, and cells from the  
IBCIF require different treatment from cells from the Input Cell Interface. This bit will  
overwrite changes made via the Xlate_From_IBCIF bit.  
IBCIF_P2_To_P1  
When this bit is logic 1, then all cells from the Input Backwards Cell Interface will have the  
Prepend/Postpend 2 word of the VC Table inserted into their Prepend/Postpend 1. This  
feature is used if the first Prepend/Postpend word is used as a routing word or identification  
tag, and cells from the IBCIF require different treatment from cells from the Input Cell  
Interface. This bit will overwrite changes made via the Xlate_From_IBCIF bit.  
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use  
Document ID: PMC-1990553, Issue 4  
201  
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