參數(shù)資料
型號: PM2329
英文描述: Telecommunication IC
中文描述: 通信集成電路
文件頁數(shù): 60/162頁
文件大小: 1581K
代理商: PM2329
Proprietary and Confidential to PMC-Sierra, Inc and for its Customers
Internal Use
Document ID: PMC-2010146, Issue 4
63
PM2329 ClassiPI Network Classification Processor Datasheet
Figure 18 Packet Input, Result Output, and associated Status Handshake
3.2 Field Extraction Engine (FEE)
3.2.1 Introduction
The Field Extraction Engine (FEE) represents the first stage of processing for all packet classification
operations in the PM2329.
Packet Input Buffer
The FEE includes an 8 KB Packet Input Buffer which can store up to 32 packets simultaneously. Whenever
the external device (processor or other packet source) sends packet data to the PM2329, the packet is first
deposited in the Packet Input Buffer.
Packets may transfer to the PM2329 while earlier packets are still being processed.
Packet bytes may begin to transfer to the PM2329 before other packets have completed transfer.
Multiple packets may be stored concurrently in the Packet Input Buffer.
CSR Read
Result FIFO Read
OC Processing
Packet FIFO Write
Pkt Buffer Available
Result Available
OC Seq Terminated
Interrupt OR
Poll OC Seq Term OR
Chnl Strobe
Poll PBA Set
Write
Packet
EOP
OC Processing
OC Start
OC Done
Read
Result
Last Result
Read
(Status handshake associated with Result Output involves PBA, RA and OCST signals)
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