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PDF TXC-04246 Data sheet ( Hoja de datos )
| Número de pieza | TXC-04246 | |
| Descripción | OC-3 Ethemet Over SONET/SDH Mapper | |
| Fabricantes | Transwitch | |
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EtherMap-3 Pt Device
OC-3 Ethernet over SONET/SDH Mapper
TXC-04246
PRODUCT INFORMATION
FEATURES
• Eight 10/100 Mbit/s Ethernet ports, each using a SMII
interface
• Single 1000 Mbit/s Ethernet port, using a parallel GMII
interface (lead shared with SMII interfaces)
• Ethernet Jumbo Frame support, all modes
• Ethernet Management interface for control
• Low latency throughput performance
• 64 ms differential delay compensation
• Configurable transmit and receive buffers up to 512 kbytes
• Provides IEEE 802.3 Half Duplex mode on 10/100 Mbit/s
and Full Duplex mode on 10/100/1000 Mbit/s Ethernet ports
• Provides IEEE 802.3 Management Statistics (RMON)
• Ethernet frame encapsulation/decapsulation protocols:
• ITU-T G.7041, Generic Framing Procedure (GFP)
• ITU-T X.86/X.85, Link Access Procedure SDH (LAPS)
• ITU-T Q.922, Link Access Procedure Frame Mode (LAPF)
• RFC1662/3518, PPP Bridging Control Protocol (BCP)
• Performs mapping/demapping of encapsulated Ethernet
frames into/from low order (VT1.5 SPE/VT2 SPE/VC-11/
VC-12) and high order (STS-1 SPE/VC-3) virtually
concatenated payloads
• Performs mapping/demapping of encapsulated Ethernet
frames into/from a single contiguous concatenated (STS-3c-
SPE/VC-4) payload or a single Low/High order (VT1.5/VT2/
VC-11/VC-12/STS-1/VC-3) payload
• On-chip LCAS processing (ITU-T G.7042) for low and high
order virtual concatenated payloads
• Glueless interface to external 64/128/256 Mbit SDRAM
• Low Order POH and Pointer processing for 84/63 VT1.5/
VT2/TU-11/TU-12 and 3 TU-3
• High Order POH processing for STS-1 SPE/VC-3/STS-3c
SPE/VC-4
• Byte-wide 19 MHz parallel Add and Drop Telecom Bus
interfaces
• Per-port Ethernet side and SONET/SDH system side
loopback for system level diagnostics
• 16-bit wide microprocessor interface, selectable between
Motorola or Intel
• Boundary scan (IEEE 1149.1 standard)
• + 3.3V and +1.8V power supplies, 5V tolerant I/O leads
• 400-lead plastic ball grid array package
(PBGA, 27 mm x 27 mm)
• Device Driver
DESCRIPTION
The EtherMap-3 Pt (Platinum) is a highly integrated EoS device that
provides for mapping of 10/100/1000 Mbit/s Ethernet into SONET/SDH
STS-3/STM-1 Transport payloads with extremely low latency throughput.
The device supports connection for up to eight 10/100 Mbit/s Ethernet
ports, using SMII interfaces, or a single 1000 Mbit/s Ethernet port, using a
GMII interface. Ethernet frames are encapsulated using either GFP, LAPS,
LAPF or PPP/BCP protocol. The encapsulated Ethernet frames are then
mapped into either virtually concatenated low or high order payloads, such
as VT1.5 SPE/VT2 SPE/VC-11/VC-12/STS-1 SPE/VC-3, or into
contiguously concatenated payloads such as STS-3c SPE/VC-4. Low and
high order SONET/SDH POH generation and processing/termination is
performed. A Telecom Bus provides the SONET/SDH interface.
In addition to support for full-rate Ethernet transfer, over-subscribed
Ethernet transfers are also supported using back pressure mechanisms
(half and full duplex flow control) in order to prevent frame loss.
Configurable external SDRAM is used for buffering Ethernet frames to
support bandwidth oversubscription, highly bursty traffic and flow control
operation. Buffers are used as well for receive SONET/SDH container
alignment and differential delay compensation of low and high order
virtually concatenated payloads.
For both low and high order virtually concatenated payloads, optional on-
chip standards based LCAS processing is provided to allow hitless
dynamic bandwidth adjustments.
A powerful hardware and RTOS independent EtherMap family device
driver provides full access to all the features of the device through APIs. It
utilizes matched get/set functions and can be easily ported.
APPLICATIONS
• SONET/SDH Add/Drop and Terminal Multiplexers
• Multi-Service Access Platforms (MSAP)
• Compact Access or CPE Platforms
• IP DSLAMS
• Wireless Backhaul Electronics (RNC/BSC)
• Latency Sensitive Transport (FTP)
TELECOM BUS SIDE
+1.8V
+3.3V •
HO/LO HO/LO
RING POH
Ports Ports
Controls
CLOCKS
(SONET/SDH Ref,
System, One Sec.)
ETHERNET LINE SIDE
EtherMap -3 PtDROP Bus
.comADD Bus
OC-3 Ethernet over
SONET/SDH Mapper
TXC-04246
10/100 Mbit/s SMII (Port 1)
• / 1000 Mbit/s GMII
•
•
•
10/100 Mbit/s SMII (Port 8)
eet4u Microprocessor SDRAM
h Interface Interface
sU.S. and/or foreign patents issued or pending
taCopyright © 2004 TranSwitch Corporation
aEtherMap, PHAST, TEMx28, TranSwitch and TXC
.dare registered trademarks of TranSwitch Corporation
Boundary
Scan
Ethernet
Management
Interface
TranSwitch Corporation • 3 Enterprise Drive • Shelton, Connecticut 06484
www Tel: 203-929-8810 • Fax: 203-926-9453 • www.transwitch.com
Document Number:
TXC-04246-MC, Ed. 1
October 2004
• USA
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