Cisco CRS-1 System Description page 89

Route Processor
A CPU interface and system control ASIC provides resources and communication paths between the CPU
and the rest of the system to provide line card management, configuration, monitoring, protocol control, and
exception packet handling. The fabric queuing portion of this ASIC acts as the fabric interface to handle the
traffic to the fabric. Traffic from the fabric is handled by the ingress queuing portion of an interface bridging
FPGA.
Note A chassis may not be populated with a mix of RP and PRP cards. Both route processor cards should be of the
same type (RP or PRP).
The following figure shows a block diagram of the PRP card.
Figure 54: Performance Route Processor Block Diagram
Performance Route Processor Memory Options
The following memory configurations are supported by the CPU memory controller:
• Three 2GB DDR3 DIMMs, for a total of 6GB (Cisco product ID: CRS-8-PRP-6G)
• Three 4GB DDR3 DIMMs, for a total of 12GB (Cisco product ID: CRS-8-PRP-12G)
Note The memory on the 6GB PRP is not upgradable to 12GB.
Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router System Description
Performance Route Processor Memory Options
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