Products MDX250

MDX250
Multiple 10/100/1000 Mbps Ethernet to SPI-3 Multi-PHY Mapper

MDX250 is a highly integrated multi-channel Ethernet controller for Ethernet over SONET/SDH applications. Connecting seamlessly with next-generation SONET/SDH framers supporting virtual concatenation and LCAS, the MDX250 provides an efficient solution for channelized Ethernet transport.

Interfaces

• Equipment / client side:
• Up to 4 Gigabit Ethernet via GMII
• Up to 16 Ethernet/Fast Ethernet via SMII
• Network Side
• 16 channel OIF compliant SPI-3 Master
• Control/Test
• Non-multiplexed Address/Data
• IEEE 1149.1 compliant JTAG

• Network Access Equipment ( e.g. modems )
• Telecom/Datacom Aggregation Equipment ( e.g. MSPP )
• Multi-Service Customer Premises or Customer Located Equipment ( e.g. MicroMSPP)
• Test Equipment
• for additional sample solutions please visit our solutions catalog.

• 16 Ethernet/Fast Ethernet MACs and 4 Gigabit Ethernet MACs
• Full RMON/MIB II performance monitoring
• 802.3x PAUSE frame generation for flow control
• Jumbo frame (9600 bytes) support for Gigabit Ethernet ports
• Lossless flow control for up to 15 km for Ethernet/Fast Ethernet and 10km for Gigabit Ethernet
• Channelized SPI-3 Master (Link Layer) interface
• Direct connection to SPI-3 Slave (PHY) interface
• 8 or 32 bits @ up to 104MHz
• 16 rate independent channels
• Generic 16-bit microprocessor interface
• Non-multiplexed Address/Data + Control

The MDX250 is a highly integrated device capable of mapping Ethernet, Fast Ethernet and Gigabit Ethernet signals into SPI-3 (POS-PHY Level 3) channels. On the client side, 16 Ethernet/Fast Ethernet or 4 Gigabit Ethernet interfaces are available. On the network side, a 16-channel Multi-PHY SPI-3 Master (Link Layer) interface is provided to seamlessly interface to highly channelized SONET/SDH data mappers such as the Galazar VersaNode, MSF2500, MSF250, DSF2500 or DSF250.

The MDX250 maps packet data from each of 16 E/FE interfaces or 4 Gigabit Ethernet interfaces into individual SPI-3 channels. Backpressure on the Ethernet, Fast Ethernet and Gigabit Ethernet ports is implemented with IEEE 802.3x flow control with programmable trigger thresholds in the packet FIFOs. A mix of Gigabit Ethernet and Ethernet/Fast Ethernet channels is supported. Each Gigabit Ethernet port shares resources with 4 Ethernet/Fast Ethernet ports.

The SPI-3 Master interface operates in 8-bit or 32-bit mode at up to 104 MHz for transfer rates up to 3.2 Gbps. This interface supports direct, selected and polled packet availability flow control signals from the corresponding SPI-3 Slave. In the transmit direction, the SPI-3 always transfers packets across the SPI-3 bus in blocks which are 64 bytes in length. Transfers for packets less than 64 bytes or remainders of packets less than 64 bytes are interrupted to preserve interface throughput. In the receive direction, the SPI-3 can either receive packets in blocks (of any size) or as complete packets..

On-chip memory is used for packet buffers in both the receive and transmit directions. In the receive direction (SPI-3 to Ethernet), the device contains 36 slices of buffer memory assignable across all channels in 1 kbyte granularity. In the transmit direction, the device contains 96 slices of buffer memory assignable amongst all channels in 1 kbyte granularity. When coupled with the MSF250 or DSF250 framer, this is sufficient to support 15 km of lossless flow control on all 16 E/FE ports and 10 km of lossless flow control on all 4 Gigabit Ethernet ports.

The Ethernet interfaces provide all necessary counters to support SNMP and RMON/MIB-II implementations. Diagnostic circuitry is provided to enable loopback of data received on any Ethernet interface or on any SPI-3 channel. Software initiated IEEE 802.3x flow control packet generation is also supported in the Ethernet MACs to help facilitate diagnostic testing

For more sample solutions, please visit our solutions catalog.

For more information on the MDX250 device, please contact your Galazar Networks Sales representative at http://www.galazar.com/contact/sales.html.

Galazar Networks, the Galazar Networks logo, SOLAR, ASSURED are registered trademarks of Galazar Networks Inc. The information found in this document is subject to change without notice. This material is provided on an "as is" basis. Galazar Networks Inc. makes no representation or warranties of any kind, expressed or implied arising out of the application or use of any product described herein, neither does it convey any license under its patent rights, copyrights, or trade secrets nor the rights of others. This document is the property of Galazar Networks Inc. No part of this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form of any means, electronic, photographic, or otherwise, or used as the basis for manufacture or sale of any items without the prior written consent of Galazar Networks Inc.

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