XRT95L53 Datasheet, PDF (1/4 Pages) Exar Corporation – OC-48 ETHERNET/SONET MULTI-SERVICE FRAMER PROCESSOR

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PRODUCT BRIEF
ADVA^PN^RC^EE^LD^IMC^IO^NN^AF^RI^YDENTIAL XRT95L53 EXtendAR-48M
OC-48 ETHERNET/SONET MULTI-SERVICE FRAMER PROCESSOR
FEBRUARY 2005
GENERAL DESCRIPTION
EXtendar 48M (XRT95L53) is a highly integrated OC-
48/STM-16, Quad OC-12/STM-4 & OC-3/STM-1
Multi-protocol Framer processor. This device
combines standard OC-48/STM-16, Quad OC-12/
STM-4, OC-3/STM-1 SONET framer functions with a
flexible packet interface as well as a range of framing
and encapsulation techniques integrated on a single
chip. EXtendar 48M supports Generic Framing
Procedure (GFP) in combination with Virtual
Concatenation & LCAS, LAPS, POS, ATM and DS3
capabilities configurable on a per-channel basis.
EXtendar 48M is the industry's first device to
integrate 48 DS3/Fractional DS3 framers on a single
chip. EXtendar 48M, in addition to the SONET OC-
48/OC-12/OC-3 interfaces, supports OIF compliant
SPI-3 interface with optional support for Exar's
proprietary G-header interface. Using this industry
first G-header interface, EXtendar 48M provides
framing and encapsulation support for RPR, MPLS or
proprietary client data that need to be transported
over SONET. The unique combination of flexible
packet framing and encapsulation features combined
with optimal SONET transport capabilities make
EXtendar 48M an ideal solution for Multi-service
SONET transport, Core as well as DWDM systems.
APPLICATIONS
• Multi-Service Provisioning Platforms (MSPPs)
• SONET/SDH add/drop and terminal multiplexers
• Ethernet Over SONET Platforms (MTU/MDU)
• L2/L3 Switches & Routers
KEY FEATURES
• System-side Interfaces
■ Single OIF compliant SPI-3 interface with
optional support for G-header interface
■ OC-12/STM-4
bit@622Mhz)
• Line-side Interfaces
Serdes
Interface
(4x1-
■ Working and protect OC-48/STM-16 Serdes
Interfaces (4-bit@622Mhz)
- Supports TFI-5 interface
■ Quad OC-12/STM-4/OC-3/STM-1 Serdes
Interfaces (4x1-bit@622Mhz/155Mhz)
• Support for flexible mapping of client data on a per
channel basis into optimal SONET/SDH payloads
using Frame-based GFP (GFP -F)
■ Maps Ethernet data into SONET/SDH
payloads using GFP
REV. P1.0.0
■ Maps PPP frames into SONET/SDH payloads
using GFP -F
■ Supports GFP mapping of RPR, MPLS or
proprietary client data using the G-header
interface
■ Supports add/drop of client management
frames from/to the microprocessor interface
• Supports a G-header interface in order to
effectively map RPR, MPLS or proprietary client
data over SONET
■ Compatible with OIF compliant SPI-3 interface
■ Performs G-header
capsulation
encapsulation/de-
■ G-header interface can be optionally disabled
• Support for contiguous pointer-based
concatenation for higher order paths
■ Supports mapping of Gigabit Ethernet to STS-
48C/AU4-16C, STS12C/AU4-16C or STS3C/
AU4 or STS-1/AU3
• Support for a SPI-3 interface with up to 256 logical
sub-channels and individual channel flow control
• Support for High Order and Low Order Virtual
concatenation with optional Link Capacity
Adjustment Scheme (LCAS)
■ Supports flexible mapping of multi-protocol
traffic into standards based high order virtual
concatenation channels of STS-3c-Xv/VC-4-Xv
as well as STS-1-Xv/VC-3-Xv
■ Supports mapping of multi-protocol traffic into
standards based low order virtual
concatenation channels of VT6/VT2/VT1.5
■ Supports a total of 64 Virtual Concatenation
Groups (VCG's)
■ Supports Link Capacity Adjustment Scheme
per ITU-T G.7042
■ Provides up to 256 ms of differential delay
compensation using external SDRAM interface
• Terminates and processes Section, Line and Path
Overhead on OC-48/STM-16, OC-12/STM-4 and
OC-3/STM-1 interfaces
■ Support for extensive performance monitoring
on the SONET/SDH interfaces
• Support for on-chip STS-1 cross-connect between
the OC-12 Add/drop interface and the Lineside
interfaces
• Support for UPSR and 1+1 Linear Automatic
Protection Switching
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • [phone] • FAX [phone] • www.exar.com