Product Brief
PB PRS / v0.6 / 2-10-2006
PRS 80G, PRS C48X, and PRS C192X
Switch Fabric
Line Card
Product Overview
Backplane
CSIX / PL3
2x3.2 Gbps
Protection Switch
NP / TM
(nP37xx)
5 Gbps
4 x OC-12
PRS C48X
Active Switch
2x3.2 Gbps
Line Card
CSIX
GE
GE
8x3.2 Gbps
8x3.2 Gbps
10G / OC-192
NP / TM
20 Gbps
PRS C192X
Line Card
CSIX / PL3
NP / TM
(nP37xx)
4 x GE
4 x OC-12
OC-48
NP / TM
(nP37xx)
8x3.2 Gbps
8x3.2 Gbps
20 Gbps
PRS C192X
PRS 80G
(one or two per plane)
NP / TM
(nP37xx)
Serial Links at
3.2 Gbps (with
8b/10b coding)
Fibre
Channel
NP / TM
PRS 80G Switch with PRS C48X and PRS C192X Fabric Interfaces
the traffic of the failing board), and
maintenance switchover between switch
boards (without any service interruption and
no cell loss).
Support of Real-Time Traffic (TDM)
Multiple QoS Options
The PRS 80G can be suited to the
application specific QoS requirements thanks
to multiple traffic scheduling options:
The PRS 80G addresses the technical
challenges (latency, jitter) of merging
real-time traffic with other traffic types over a
single communication infrastructure:
Control Software
• Strict traffic priority scheduling
• Deterministic low latency, typically a few
microseconds transit delay in worst case
conditions (100% traffic load) for high
priority traffic.
The control processor of the switch board
runs the AMCC Secondary Switch Controller
software (SSC), in charge of configuring,
monitoring, and controlling the switch board
operations. The SSC initializes the cell switch
device, performs diagnostics, monitors
device status, accumulates statistics, and in
a redundant switch configuration,
• Configurable credit table (weighted
round-robin) to guarantee bandwidth to
lower priority traffic
• Credit Table with fully preemptive highest
traffic priority (exhaustive scheduling)
• Guaranteed precedence of time-sensitive
traffic (for example, TDM) over other traffic
types, using fully preemptive traffic priority.
Switch Board Redundancy for
High Availability
communicates with its peer to perform
system recovery in case of component
failure.
Full Bandwidth Multicast
The PRS 80G can be designed to operate in
redundant switch board configurations that
address the high-availability requirements of
five-nine applications. On the payload
boards, the PRS C48X and PRS C192X
Fabric Interface chips provide a redundant
path with the switch boards.
The PRS 80G addresses the growing needs
of audio and video distribution applications,
thanks to its powerful multicast and
broadcast mechanisms: cell replication at
sending, with cells being scheduled at
different times for different output ports.
In addition, the AMCC Switch Integrated
Control Console (SWICC) tool, a PC software
application, enables access to any
addressable resources in the switch device to
initiate or monitor any operational or test
function (for example, traffic generation,
digital eye, sense and operate of any bit, loop
back, and so on). The SWICC can be used
locally, on the customer premises, or for
remote support.
The PRS 80G supports three redundancy
modes: hot standby mode (with automatic
takeover of the traffic of the failing active
board), traffic load sharing between the two
switch boards (with automatic take over of
2
Empowering Intelligent Networks
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
