MTVX2602

Features:

·Integrated Single-Chip 10/100Mbps Ethernet Switch
·24 10/100Mbps Autosensing, Fast Ethernet Ports with RMII or Serial Interface (7WS). Each port can independently use one of the two interfaces.
·Supports 8/16-bit CPU interface in managed mode
·Serial interface in unmanaged mode
·Supports one Frame Buffer Memory domain with SRAM at 100MHz
·Supports SRAM domain memory size 1MB or 2MB
·Applies centralized shared memory architecture
·Up to 64K MAC addresses
·Maximum throughput is 2.4Gbps non-blocking
·High performance packet forwarding (7.1431M packets per second) at full wire speed
·Provides port based and ID tagged VLAN support (IEEE 802.1Q), up to 255 VLANs
·Supports IP Multicast with IGMP snooping
·Supports spanning tree with CPU, on per port or per VLAN basis
·Packet Filtering and Port Security
·Static address filtering for source and/or destination MAC
·Static MAC address not subject to aging
·Secure mode freezes MAC address learning Each port may independently use this mode
·Full Duplex Ethernet IEEE 802.3x Flow Control
·Backpressure flow control for Half Duplex ports
·Supports Ethernet multicasting and broadcasting and flooding control
·Supports per-system option to enable flow control for best effort frames even on QoS- enabled ports
·Traffic Classification
·4 transmission priorities for Fast Ethernet ports with 2 dropping levels

Specifications

Storage Temperature....................................-65°C to +150°C
Operating Temperature...................................-40°C to +85°C
Maximum Junction Temperature ...................................+125°C
Supply Voltage VCC with Respect to VSS+3.0 V ......... to +3.6 V
Supply Voltage VDD with Respect to VSS +2.38 V .....to +2.75 V
Voltage on Input Pins..............................-0.5 V to (VCC + 3.3 V)
Caution: Stress above those listed may damage the device. Exposure to the Absolute Maximum Ratings for
extended periods may affect device reliability. Functionality at or above these limits is not implied.

Description

The MTVX2602 is a high density, low cost, high performance, non-blocking Ethernet switch chip. A single chip provides 24 ports at 10/100Mbps and a CPU interface for managed and unmanaged switch applications.

The MTVX2602 supports up to 64K MAC addresses and up to 255 port-based Virtual LANs (VLANs). The centralized shared memory architecture permits a very high performance packet forwarding rate at up to 3.571M packets per second at full wire speed. The chip is optimized to provide low-cost, high-performance workgroup switching. The Frame Buffer Memory domains utilize cost-effective, high-performance synchronous SRAM with aggregate bandwidth of 6.4Gbps to support full wire speed on all ports simultaneously.

With delay bounded, strict priority, and/or WFQ transmission scheduling, and WRED dropping schemes, the MTVX2602 provides powerful QoS functions for various multimedia and mission-critical applications. The chip provides 4 transmission priorities and 2 levels of dropping precedence. Each packet is assigned a transmission priority and dropping precedence based on the VLAN priority field in a VLAN tagged frame, or the DS/TOS field, or the UDP/TCP logical port fields in IP packets. The MVTX2602 recognizes a total of 16 UDP/TCP logical ports, 8 hard-wired and 8 programmable (including one programmable range).

The MTVX2602 supports 2 groups of port trunking/load sharing. Each 10/100 group can contain up to 4 ports. Port trunking/load sharing can be used to group ports between interlinked switches to increase the effective network bandwidth. In half-duplex mode, all ports support backpressure flow control to minimize the risk of losing data during long activity bursts.

In full-duplex mode, IEEE 802.3x flow control is provided. The MTVX2602 also supports a per- system option to enable flow control for best effort frames, even on QoS-enabled ports.

Statistical information for SNMP and the Remote Monitoring Management Information Base (RMON MIB) are collected independently for all ports. Access to these statistical counters/registers is provided via the CPU interface. SNMP Management frames can be received and transmitted via the CPU interface creating a complete network management solution.

The MTVX2602 is fabricated using 0.25 micron technology. Inputs however, are 3.3V tolerant, and the outputs are capable of directly interfacing to LVTTL levels. The MVTX2602 is packaged in a 553-pin Ball Grid Array package.