PM8620 datasheet(12/190 Pages) PMC

12 / 190 page

NSE-20G™ Standard Product Data Sheet

Preliminary

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

Document ID: PMC-2000170, Issue 3

Features

The Narrowband Switch Element 20G (NSE-20G):

• Implements a Scaleable Bandwidth Interconnect (SBI™) DS0 granularity Space switch.

• Implements a SONET/SDH VT1.5/VT2/TU11/TU12 granularity Space switch for the serial

777.6 MHz LVDS TelecomBus.

• With the allied SBS or SBS-lite device, implements a DS0 granularity Memory-Space-

Memory switch.

• Supports 32 STS-12 equivalent serial ports via 777.6 MHz, 8B/10B encoded LVDS links

(each port can be either Serial TelecomBus or Serial SBI336S)

• When configured for SBI mode, switches DS0 or N*DS0 for all T1 and E1 tributaries and

aggregate columns for switching T1, E1, TVT1.5, TVT2, DS3 and E3 tributaries.

• When configured for the serial 777.6 MHz TelecomBus interface, switches any SONET/SDH

virtual tributary or tributary unit up to STS-1.

• Supports switching of arbitrary non-standard octet aggregates.

• Supports unicast, multicast, and broadcast for all switching modes.

• Provides 20 Gbit/s (258,048 DS0s, 10,752 T1s/VT1.5s, 8,064 E1s/VT2s, 384 DS3s/E3s)

switching.

• Works with SBS devices that support up to four 19.44 MHz SBI buses or one 77.76 MHz

SBI336 bus that communicates with PMC-Sierra’s SBI device family. Alternatively, the SBS

and SBS-lite devices support up to four 19.44 MHz STS-3 TelecomBuses or one 77.76 MHz

STS-12 TelecomBus for connection with PMC-Sierra’s SPECTRA™ family of devices.

• Can be combined in applications with PMC-Sierra’s CHESS™ Set devices (PM5374 TSE

and PM5307 TBS).

• Supports a microprocessor interface which is used to configure/control the NSE, to make

DS0-granularity switch settings.

• Supports clean error checked 8 Mbit/s full-duplex, in-band communications channels from

the NSE’s attached microprocessor to the attached microprocessors of each of the 32 attached

SBS336S devices. This channel is used to initialize and control the SBSs, or other such

devices, and to implement call-establishment set-up changes.

• Supports JTAG for all non-LVDS signals.

• Requires dual power supplies at 1.8 V and 3.3 V.

• Packaged as a 480 ball UBGA.

• In conjunction with the SBS or SBS-lite, supports “1+1” and “1:N” fabric redundancy.

PM8620 Datasheet(PDF) 12 Page - PMC-Sierra, Inc