AMCC reserves the right to make changes to its products, or to discontinue any product or service without notice, and advises its customers to

obtain the latest version of relevant information to verify, before placing orders, that the information being relied upon is current.

AMCC is a registered trademark of Applied Micro Circuits Corporation. Copyright © 2002 Applied Micro Circuits Corporation. All Rights Reserved.

200 Minuteman Road • Andover, MA 01810 • Tel: 978-247-8000 • Fax: 978-623-0024 • http://

www.amcc.comnical support, please call 800 840-6055 or email productsupport@amcc.com

Product Brief

Niagara

OC-192/48/12/3 DW/FEC/PM and ASYNC Mapper Device

Part Number S19208CBI, Revision 1.4, Jan 2003

4

Empowering Intelligent Optical Networks

Confidential and Proprietary

Figure 3: OC-48/STM16 (and below) to OTU-1 Edge Tran-

sponder

Figure 3 shows the Niagara in an edge transponder applica-

tion. An AMCC S3474 CMOS Dual-SerDes with Continuous

mode operation provides the interface to the client side and

network side optics. In this application, the client half of the

S3474 will run down to FDDI rates (125 Mbps). The network

side of the S3474 will support the client rate plus 7% overhead

for a pure FEC application, or it will support an OTU-1 rate for

mapping into the Digital Wrapper frame.

Figure 3: OC-48/STM16 to OTU-1 Edge Transponder

S3475

Dual Continuous

Rate Transceiver

Client I/F

TOH

ADD/DROP

ODU-1 OH

ADD/DROP

S19208

NIAGARA

TX REF GEN

LO

OC48/12/3 (and SDH)

8B/10B Signals down

to FDDI (125Mb)

Network I/F