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PMC-Sierra Introduces the Industry's Highest Density Chip Set for IP over T1/E1 Applications.


NOTE TO MEDIA: Photo and PowerPoint presentation (figures) are

available in a Smart News Release(TM) on Business Wire's Home

Page at www.businesswire.com

BURNABY, British Columbia--(BUSINESS WIRE)--Oct. 5, 1999--

-- New FREEDM-84/TEMUX chip set provides a complete packet processor, framer and mapper solution for T1/E1 over SONET/SDH and uses less than half the number of chips compared to other currently available solutions

PMC-Sierra (NASDAQ NASDAQ
 in full National Association of Securities Dealers Automated Quotations

U.S. market for over-the-counter securities. Established in 1971 by the National Association of Securities Dealers (NASD), NASDAQ is an automated quotation system that reports on
:PMCS PMCS PMC Sierra (stock symbol)
PMCS Project Management Control System
PMCS partial mission-capable, supply (US DoD)
PMCS Preventive Maintenance Checks & Services
PMCS Professional Military Comptroller School
) today announced the new FREEDM-84/TEMUX chip set. The chip set consists of two new members of the FREEDM FREEDM Frame Engine and Data Link Manager  family of high density packet processors, and the TEMUX - a highly integrated T1/E1 framer and SONET/SDH mapper device. The FREEDM-84/TEMUX chip set provides an optimized solution for packet based T1/E1 over channelized Refers to an architecture that transmits data in channels. It often refers to the 64 Kbps channels in T1 lines, which were originally developed to handle digitized voice streams (TDM). See TDM.  DS-3 or SONET/SDH interfaces used in Internet access switch, router and access multiplexer applications. This improved density allows designers to build T1/E1 channelized interface cards with multiple OC-3 capacity (see Figure 1 which illustrates a complete OC-12 solution using TEMUX and FREEDM-84).

Internet Access Equipment Design Challenges

Internet access system designers face the challenge to develop equipment that terminates a dramatically increasing amount of bandwidth, while remaining restricted to a fixed space and power budget. System port card capacities must evolve from aggregate rates ranging from 45 to 155 Mbit/s to capacities ranging from 155 to 622 Mbit/s within the same form factor. The FREEDM-84/TEMUX chip set meets this need, providing a complete T1/E1 over SONET/SDH solution in half the space required by other currently available devices. In a T1 channelized OC-3 application, the new chip set replaces up to 10 devices (Figure 2), while in an E1 channelized STM-1 application, the FREEDM-84/TEMUX chip set replaces up to 13 chips (Figure 3). In either case the solution consists of just five chips (Figure 4).

FREEDM-84/TEMUX Chip Set Meets Cisco Systems' Port Card Density

Requirements

"We worked closely with PMC-Sierra on the specification for both the FREEDM-84 and TEMUX devices," said Yakov Zbinovich, Cisco Systems' manager of hardware development. "This new chip set meets our requirements for both port card density and backwards compatibility," he added.

FREEDM-84/TEMUX Chip set

The PM7384 FREEDM-84P672 and PM7385 FREEDM-84A672 each support up to 672 simultaneous High-level Data Link Control (networking) High-level Data Link Control - (HDLC) A general-purpose data link control protocol defined by ISO for use on both point-to-point and multipoint (multidrop) data links. It supports full-duplex, transparent-mode operation.  (HDLC (High-level Data Link Control) A data link protocol from ISO for point-to-point communications over serial links. Derived from IBM's SDLC protocol, HDLC has been the basis for numerous protocols including X.25, ISDN, T1, SS7, GSM, CDPD, PPP and others. ) channels across up to 84 T1 or E1 links. The FREEDM-84P672 supports a 66 MHz (MegaHertZ) One million cycles per second. It is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. A one-megahertz clock (1 MHz) means some number of bits (16, 32, 64, etc. , 32 bit PCI (1) (Payment Card Industry) See PCI DSS.

(2) (Peripheral Component Interconnect) The most widely used I/O bus (peripheral bus).
 2.1 compliant system interface, and allows system designers to continue to deliver high performance PCI-based solutions. The FREEDM-84A672 supports PMC-Sierra's Any-PHY(TM) streaming packet system interface. The Any-PHY(TM) interface supports aggregate data rates exceeding 622 Mbit/s and the ability to ensure low latency required for delay sensitive applications such as voice over IP.

Both new FREEDM devices support up to three times the number of links previously possible in a single device. This radically improved link density is achieved through the new Scaleable Bandwidth Interconnect (SBI SBI Special Background Investigation
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SBI State Bank of India
SBI Secure Border Initiative
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SBI Stockholm Brain Institute
SBI Serious Bacterial Infection
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) bus developed by PMC-Sierra. The SBI bus uses an 8 bit parallel format to interconnect the TEMUX Layer 1 framer device with high density Layer 2 solutions such as the new FREEDM-84 devices (Figure 5).

The PM8315 TEMUX integrates 28 T1 framers, 21 E1 framers, a DS-3 framer/multiplexer and SONET/SDH mappers into a single chip. The device supports transmission over both DS-3 and SONET/SDH links, interfacing directly to the PM5342 SPECTRA-155 for SONET/SDH applications. The TEMUX supports the new SBI bus high density interface to FREEDM-84 while also supporting seamless interconnect to other members of the FREEDM family and to the PM73121 AAL (ATM Adaption Layer) The part of the ATM protocol that breaks up application packets into 48-byte payloads which become ATM cells when the 5-byte headers are attached. The AAL resides between the higher layer transport protocols and the ATM layer. 1gatorII ATM AAL1 SAR (Segmentation And Reassembly) The protocol that converts data to cells for transmission over an ATM network. It is the lower part of the ATM Adaption Layer (AAL), which is responsible for the entire operation. See AAL.

SAR - segmentation and reassembly
.

"Through the SATURN Development Group The SATURN Development Group was an important industry forum that enabled the specification of chip-to-chip interfaces for the communications industry. It was co-founded in 1992 by PMC-Sierra and Sun Microsystems.  we've worked to define interfaces such as Any-PHY(TM) and SBI that provide the future scalability our customers require -- they simply cannot afford the time to market costs of choosing a point solution," said Glenn Bindley, PMC-Sierra vice-president & general manager access products division.

Pricing, Availability and Customer Support

The PM7384 FREEDM-84P672 is packaged in a 35 by 35mm 352-pin SBGA SBGA Striped Bass Growers Association
SBGA Spreader Ball Grid Array
SBGA Super Ball Grid Array
 and is priced at $480 in 1KU volumes. The pin-compatible PM7385 FREEDM-84A672 is priced at $385 in 1KU volumes. The PM8315 TEMUX is packaged in a 23 by 23 mm 324 pin PBGA PBGA Plastic Ball Grid Array  and is priced at $299 in 1KU volumes. All devices are sampling now and are rated for industrial temperature range operation (-40 to +85 degrees Celsius).

The FREEDM-84P672 and FREEDM-84A672 are software compatible with the entire FREEDM family, while the TEMUX provides software compatibility with PMC-Sierra's PM4351 COMET and PM8313 D3MX products ensuring an easy upgrade path for the 100's of existing designs currently using these devices. A comprehensive customer support package including device datasheets, technical overview, software drivers, programmer's guide and hardware reference design is available at http://www.pmc-sierra.com/freedm.

About PMC-Sierra

PMC-Sierra is a leading provider of high speed internetworking component solutions emphasizing ATM, Ethernet, SONET/SDH, T1/E1 and T3/E3 applications. The company's quality system is registered with the Quality Management Institute to the ISO (1) See ISO speed.

(2) (International Organization for Standardization, Geneva, Switzerland, www.iso.ch) An organization that sets international standards, founded in 1946. The U.S. member body is ANSI.
 9001 standard. As co-founder of the SATURN Development Group, PMC-Sierra works with over 30 other member companies to define and develop interoperable, standard-compliant solutions for high speed networking applications.

The company is headquartered in Burnaby, British Columbia “Burnaby” redirects here. For persons sharing this surname, see Burnaby (surname).
Burnaby, British Columbia, Canada, is the city immediately east of Vancouver.
 and is publicly traded on NASDAQ under the symbol "PMCS". PMC-Sierra offers worldwide technical and sales support and has design centers located throughout North America. For more information about PMC-Sierra, visit http://www.pmc-sierra.com.

-0-
Figures: (See PowerPoint presentation or visit
http://www.pmc-sierra.com/pressroom/pr/1999100501.html)
Figure 1: PMC T1/E1 over SONET/SDH 622 Mbit/s Solution
Figure 2: Competitive T1 over SONET OC-3 Solution
Figure 3: Competitive E1 over SDH STM-1 Solution
Figure 4: PMC T1/E1 over SONET/SDH 155 Mbit/s Solution
Figure 5: SBI Interconnect vs. Traditional Comparison

Addendum:  Acronyms and Terms
DS - Digital Signal
FREEDM - Frame Engine and Data Link Manager
HDLC - High-level Data Link Control
IP - Internet Protocol
OC - Optical Carrier
PCI - Peripheral Component Interconnect
SAR - Segmentation And Reassembly
SDH - Synchronous Digital Hierarchy - the European counterpart to
      SONET
SONET - Synchronous Optical NETwork
STM - Synchronous Transport Module
TEMUX - High Density T1/E1 Framer with Integrated VT/TU Mapper
      and M13 Multiplexer
COPYRIGHT 1999 Business Wire
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 1999, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Date:Oct 5, 1999
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