PM7323 datasheet(71/219 Pages) PMC

71 / 219 page

STANDARD PRODUCT

PM7323 RCMP-200

DATASHEET

PMC-960543

ISSUE 2

ROUTING CONTROL, MONITORING, & POLICING

200 MBPS

Proprietary and Confidential to PMC-Sierra, Inc.

and for its Customer’s Internal Use.

Table 13

CELLID[2:0]

Definition

000

All other cells:

• cells received via the Input Cell Interface

• cells inserted via the Microprocess Cell Inferface if the

UPHDRX register bit is a logic 1

• generated AIS cells if the TAGAIS register bit is a logic 0

• generated Continuity Check cells

001

Forward RM cell.

010

Backward RM cell.

011

Backward generated OAM cells:

• generated RDI

• generated Backward Reporting

• generated AIS if the TAGAIS register bit is a logic 1

100-111

Reserved

For all generated backward OAM cells (i.e. generated RDI and Backward

Reporting), the RCMP-200 can be programmed to enable or disable header

translation. That is, the RCMP-200 can insert either the ingress VPI/VCI or the

translated VPI/VCI for a backward generated OAM cell.

9.4

Multicasting

The RCMP-200 supports multicasting. A single received cell can result in an

arbitrary number of cells presented on the Output Cell Interface, each with its

own unique VPI/VCI value and appended bytes. The ATM cell payload is

duplicated without modification. Multicasting is implemented by having special

code in the VC identification search table which indicates that the VC Table

Record identified by the search process is one of a multicast set. That VC is

processed and then the next VC for the same received cell is identified by a

linked list pointer in the search table. This process can continue indefinitely.

(Optionally, a 63 cell limit can be imposed as a watch dog.)

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