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Product Brief

PRS 5G and PRS 20G

Switch Fabric

PB PRS 5G-20G / v0.5 / 05-24-2004

4

Empowering Intelligent Networks

PRS 5G (PRS C48X) and PRS 20G

(PRS C192X) Switch Fabric Device

Features

• 2.5-Gbps (PRS 5G) and 10-Gbps

(PRS 20G) full-duplex user bandwidth

switch devices with an overspeed of

two towards the backplane

• Embedded IBM 3.2-Gbps SerDes, with

8b/10b coding and XAUI-compliant

high-speed serial links

• PRS 5G (PRS C48X): CSIX-L1 or

PL3-based (POS-PHY Level 3 / OIF-

SPI3-01.0) 32-bit wide interface for

multi-GE / OC-48 network processors

• PRS 20G (PRS C192X): CSIX-L1

64-bit wide or 128-bit wide interface for

a 10-Gbps / OC-192 network

processor or 4x CSIX-L1 or PL3-based

(POS-PHY Level 3 / OIF-SPI3-01.0)

32-bit wide interfaces for multi-GE /

OC-48 network processors.

• PRS 20G (PRS C192X) operation in

subport mode or, in conjunction with

the PRS 80G switch core, in quad

PRS 5G (PRS C48X) mode, for more

integrated line card solutions

• Dual-switch attachment for redundant

switch plane operations (central switch

configurations)

• Highly-efficient multicast and

broadcast mechanism

• Ingress virtual output queuing (VOQ)

per destination port and priority, with

separate multicast queues, preventing

head-of-line blocking

• Up to four levels of traffic priority (CoS)

and four programmable ingress queue

thresholds (ingress CSIX / PL3 flow

control per destination port and

priority)

• Packet scheduling: strict priority

scheduling, credit table (weighted

round-robin), exhaustive highest

priority first

• Implements flow control bit map

mapping to ease adapter redundancy

schemes

• End-to-end packet payload protection,

with optional cyclic redundancy check

insertion

• Internal loop back support for both the

CSIX / PL3 interface and switch

interface

• Hardware compatibility with PRS 80G

switch core device via SerDes

operating at 3.2 Gbps

• Backward compatibility with

PRS 64Gu switch core device via

SerDes operating at 2.5 Gbps

(overspeed factor of 1.6)

• Backward compatibility with

PRS Q-64G switch core device via

SerDes operating at 2.5 Gbps

(overspeed factor of 1.6 for PRS 20G /

PRS C192X, or 6.4 for PRS 5G /

PRS C48X)

Enablement Tools for an

Expedited Time to Market

To facilitate the evaluation and

prototyping of complete solutions,

reference switch boards featuring the

AMCC PRS 5G and PRS 20G,

respectively, are available for installation

in evaluation platforms.

To help reduce development time and

cost, AMCC offers PRS 64Gu, PRS 80G

and PRS Q-64G switch evaluation

platforms, switch core reference

designs, and reference software to

operate switch boards.

To allow system vendors to evaluate

multi-vendor solutions, the PRS boards

and platforms are enabled for

attachment of other suppliers' NPU

platforms. Board design services and

board manufacturing capabilities

complement the AMCC PRS offering.

Specifications

PRS 5G (PRS C48X)

PRS 20G (PRS C192X)

Technology

0.13 µm

0.13 µm

Supply voltage

1.5 V, 2.5 V

1.5 V, 2.5 V

Typical power @100% traffic

5 Watts

9.5 Watts

Junction °C

0°C to 125°C

0°C to 125°C

Package

899-ball FC-PBGA

937-ball CBGA

mm x mm (pitch)

31x31 (1 mm)

32.5x32.5 (1 mm)