參數(shù)資料
型號(hào)： PM2329
英文描述： Telecommunication IC
中文描述： 通信集成電路
文件頁數(shù)： 102/162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
105
PM2329 ClassiPI Network Classification Processor Datasheet
4.2.2.14 OC Conductor Register (OCCR; 8258h)
Access Mode: Read/Write, Global
This register contains the OC Conductor to specify the OCs to be executed. The OC Conductor can be
supplied either using this register or as part of the packet stream (preceding the packet header).
The format of the OCC Field, which comes in preceding the packet header, is same as the OC Conductor
(OCC) register format. If the OCC Field is received from the Packet Source, the content of this register is
not used and its content are not changed. If the OCC Field is not supplied with the packet, this register
should be written by the processor prior to supplying the current packet and it should not be updated by the
processor until after the EOP for the associated packet has been transferred to the device.
If Trace OC Execution Enable or Processor controlled OC Sequencing Enable bits are set, the intial OC
processing starts using the content of this register or the OCC Field received from the Packet Source
depending on the state of the Enable OCC Field in the OPCR register. Once the wait condition is reached,
further OC processing continues using the content of the Alternate OCC register supplied by the processor.
The register can be read at any time by the processor to find out which OCC is currently active.
The OCC register supports two formats to specify the OCs to be executed as shown below. It can contain:
1. a set of up to 4 OC Identifiers OCIDs, or
2. the address of an E-RAM location that contains a valid C-Word.
If bit [63] of the OCC register is
‘
0
’
then the OCC register contains up to four OC Identifiers (OCIDs). The
first OCID is located at bits [62:48], the following OCIDs at bits [46:32], [30:16] and [14:0], respectively.
The OD Identifier format is shown below.
If bit [63] of the OCC register is
‘
1
’
then the OCC register contains the address of the first C-Word to be
executed from the E-RAM, OCC [16:0] supply the address.
Bit
Range
63:0
Size
64
Name
Value after Reset
0000 0000 0000
0000h
OC Conductor
Table 23
OC Conductor Register format
Forma
t
0
1
Bits 63:48
0:OCID
1
[14:0]
1xxx xxxx xxxx xxxx
Bit 47:32
Bits 31:16
0:OCID
3
[14:0]
xxxx xxxx xxxx
xxxE
16
Bits 15:0
0:OCID
2
[14:0]
xxxx xxxx xxxx xxxx
0:OCID
4
[14:0]
E[15:0]
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