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): 143/162頁
文件大?。?/td> 1581K
代理商: PM2329
Proprietary and Confidential to PMC-Sierra, Inc and for its Customers
Internal Use
Document ID: PMC-2010146, Issue 4
146
PM2329 ClassiPI Network Classification Processor Datasheet
5.3.2.3 OCC Sequencing
If the OCC contains an OCC word containing OC Identifiers (the structure of the OCC word is as
described for the OCC Register in Chapter 4 along with the format of the OC Identifiers) then OCC
Sequencing is employed.
OC execution starts when the EOP for the packet is detected. The OCC can specify up to 4 OCs. This
allows up to 4 OCs to be run in a fixed sequence. Packet processing terminates when an OC with the
Cascade OC Enable field value set to 00 is encountered, or when the last (fourth) OC is executed.
When operating in the cascaded mode, each OC Identifier also identifies the set of devices in the cascade
which will participate in the OC. The OC Descriptor Index across all devices in the cascade executing this
OC must be identical.
While ERAM sequencing using C-Words (described in the next section) is not supported in this case, E-
RAM D-Words can be updated, if enabled. In other words, all fields of the C-Word except the D-Word
Update Control field are ignored, and D-Words are updated as specified in the D-Word Update Control
field.
Figure 32
shows the sequence of events during OC execution when OCC sequencing is performed.
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