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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.
6
4
APPLICATION EXAMPLES
The RCMP-200 device is combined with up to 32 PHY devices to implement the
ingress direction an ATM switch port. Two ATM switch port applications are
shown in Figure 1 and Figure 2.
The RCMP-200 device accepts standard 53 byte cells through a SCI-PHY
interface and outputs cells with variable length pre-pends or post-pends through
an extended cell format SCI-PHY interface. The appendages added by the
RCMP-200 are used by the switch for routing. The HEC can optionally be
omitted. The combined pre-pend and post-pend length can vary from 0 to 10
bytes, with the cells correspondingly being 52 to 63 octets or 26 to 32 words.
Backward generated OAM cells and Resource Management cells are specially
labelled by overwriting an appended byte to allow these cells to be processed
and routed in the reverse direction.
The RCMP-200 utilizes external synchronous RAMs to store VPI/VCI translation
tables and per VPI/VCI switch-specific routing appendages, as well as per
VPI/VCI policing and performance monitoring information. All of this information
is stored in a single structure called the VC table
Figure 1
- OC-3 Switch Port Application
Figure 2
- DS-1 PHY Addressing Application
E/O
RXD+/-
ALOS+/-
RRCLK+/-
O/E
TXD+/-
TRCLK+/-
Ref.
Clock
19.44 MHz
PM5347 S/UNI-PLUS
SONET/SDH
USER NETWORK INTERFACE
ATM
SWITCHING
FABRIC
PM7323 RCMP-200
ROUTING CONTROL MONITORING AND
POLICING 200 Mbps
INGRESS
PER VC
PARAMETER
SRAM
PER VC OR PER PHY TRAFFIC
SHAPING AND ABR RM CELL
PROCESSING
EGRESS
O UTPUT
BUFFE R
RAM
UTOPIA
Level 1/2
Interface
Extended
SCI-PHY
Interface
OAM / RM
Cells