PM8621 PMC-Sierra, Inc., PM8621 Datasheet - Page 12

• Manufacturer Part Number: PM8621
• Description: NSE-8G Standard Product Data Sheet Preliminary
• Manufacturer: PMC-Sierra, Inc.

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Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2010850, Issue 1
Features
The Narrowband Switch Element 8G (NSE-8G):
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 an allied PM8610 SBS or PM8611 SBS-lite device, implements a DS0 granularity
Memory-Space-Memory switch.
Supports 12 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 (VT) or tributary unit (TU) up to STS-1.
Supports switching of arbitrary non-standard octet aggregates.
Supports unicast, multicast, and broadcast for all switching modes.
Provides 8 Gbit/s (96,768 DS0s, 4.032 T1s/VT1.5s, 3,024 E1s/VT2s, 144 DS3s/E3s)
switching.
Works with SBS devices that support up to four 19.44 MHz SBI 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™ chip set devices (PM5374
TSE and PM5307 TBS).
Supports a microprocessor interface used to configure/control the NSE and make DS0-
granularity switch settings.
Supports clean error checked 8 Mbit/s full-duplex, in-band communications channels from its
attached microprocessor to the attached microprocessors of each of the 12 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 1.8V and 3.3V.
Packaged as a 480 ball UBGA.
In conjunction with the SBS or SBS-lite, supports “1+1” and “1:N” fabric redundancy.
NSE-8G™ Standard Product Data Sheet
Preliminary
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