
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.
41
2. a. If the Primary Search Table is not used (i.e. L
P
= L
A
= 0), the root of the
single resulting binary search tree must be located at the Secondary Search
Table entry at SA[15:0]=0x0000.
b. If the Primary Search Table is in use, no root node shall use location
SA[15:0]=0x0000, although this location may be used for nodes at least one
level down. A value of 0x0000 in the Primary Search Table represents a null
pointer.
9.3
Cell Processing
After a VPI/VCI search has been completed for a cell, the resulting actions are
dependent upon the cell contents and the VC Table Record. Particular features
such as policing and OAM cell processing can be disabled on a global basis.
The VPI/VCI search results in a SA[15:0] value which points to a VC Table
Record. Table 6 illustrates the fields for each VC Table Record. A description of
each field is given below. If fewer than 32768 connections are supported, the
most significant bits of SA[15:0] and the associated memory may not be
required. The individual fields of the VC Table Record are accessed by the
SA[19:16] outputs. If particular features are disabled, the associated fields are
unused and no memory need be provided for them.
When a new VC is provisioned, the microprocessor must initialize the contents of
the VC Table Record. Refer to the External RAM Address (MSB) and Access
Control register description for details on access control. Once provisioned, the
microprocessor can retrieve the contents of the VC Table Record.