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): 106/162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
109
PM2329 ClassiPI Network Classification Processor Datasheet
If a field cannot be extracted due to an extraction error, or if the extraction was disabled, then the
corresponding fields in the extracted header are loaded with the default values shown below:
SIP:0FFFF FFFFh
DIP:0000 0000h
Protocol: 0000h
SP: 0000h
DP: 0000h
Flags (SYN FIN and ACK): 0
OC Sequence Mode
This bit is a don
t care if the OC Trace Enable bit is
1
.
If the OC Trace Enable bit is
0
and this bit is
0
, OC Sequencing is automatic and PM2329 terminates
packet processing at the end of the OC sequence.
If the OC Trace Enable bit is
0
and this bit is
1
, OC Sequencing is under processor control. At the
end of the current OC Sequence specified in the OCC word, the PM2329 retains the current packet and
enters a wait condition. It permits the processor to control the next sequence of OCs to be executed. For
further description of this bit, see OC Sequencing description in Chapter 5.
OC Trace Enable
When this bit is 1, the PM2329 executes an OC and enters a break condition (if the OC just executed
was not the last OC in the sequence) or a wait condition (if the OC just executed was the last OC in the
sequence). For further description of break and wait conditions, see the Alternate OCC register
description.
The table below shows the operation of the device based on the setting of the OC Sequencing Mode and
OC Trace Enable bits.
Layer 3 Header Offset
These 10 bits specify the start of the Layer 3 header with respect to the start ofthe packet. This field is
used only if Auto L3 Header Extraction is enabled and the Ethernet Framing bit is
0
.
Table 24
Processor Controlled OC Sequencing & Trace OC Execution
OC Trace
Enable
OC Sequence
Mode
Operation
0
0
Automated OC sequencing operation
(original PM2328 compatible operation)
Processor controlled OC sequencing (wait
after each OC sequence)
Trace OC sequencing--break after each OC
execution and wait after each OC sequence
0
1
1
X
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