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Description

The AX88783 is a 2-port Ethernet switch featuring a third port, 8/16/32-bit Non-PCI/SRAM-like host interface. The built-in switching fabric supports non-blocking wire-speed forwarding and offers an advanced switch feature set that includes tag/port-based VLAN, spanning tree, QoS priority management, rate control, port security, port mirroring, IGMP snooping, and MIB counters. ASIX's new ICs are targeted at performance-sensitive embedded applications that need to support two Ethernet ports, typically one for a LAN port and one for a WAN port. Also, the AX88783 support HP Auto-MDIX, which allows both the straight-through and crossover cables to be directly connected to the device without end user's guesswork. As the multimedia applications for distributing voice, video, and data remotely over the network grow, demands for adding Ethernet connectivity to an embedded system have also been increasing. Because of its ease of use, low-cost, high-throughput, and seamlessly interoperating with existing computer network, the Ethernet is a very attractive infrastructure technology to expand beyond the SOHO networking and Enterprise space. There is a growing awareness of the need for a network in the home that can easily distribute and share the high quality digital video and audio content among different home devices. Ethernet is also expanding into industrial applications on the factory floor. ASIX's latest chip offerings can meet our customer's needs for current and emerging 2-port Ethernet applications, such as VoIP phone/ATA adapters, IP cameras, next-generation IP-STB/IPTV, industrial controller/network sensors, port redundancy/port monitoring, and Single Board Computers (SBC). To help customers evaluate and develop applications with the AX88783, ASIX provides comprehensive technical support including hardware and software application notes, user guides, schematics, PCB layout guides, and drivers for Linux/WinCE operating systems. High Performance Non-PCI Interface Configurable 8/16/32-bit SRAM-like host interface (US Patent Approval), easily interfaces with most common embedded MCUs Supports PPPoE/IPv4 IP/TCP/UDP/ICMP/ IGMP checksum offload to relieve CPU loading Supports burst-mode access, minimizing CPU overhead Fast Ethernet MAC/PHY IEEE 802.3 10Base-T/100Base-TX compatible Supports full-duplex operation with IEEE 802.3x flow control and half duplex with backpressure 10/100M PHY supports twisted pair crossover detection and auto-correction (HP Auto-MDIX) Supports Wake-on-LAN by Microsoft Wakeup Frame, Magic Packet and link status change detection Switching Fabric Performs non-blocking wire-speed forwarding and filtering Embeds 32KB SRAM for packet buffering Supports broadcast storm filtering Supports per queue and per port ingress and egress programmable rate limit control Integrates two-way Address-Lookup engine and table for 1K MAC addresses Supports Routing Table/IGMP/VLAN Table access through CPU read/write operation Supports 802.1D Spanning Tree Protocol and 802.1w Rapid Spanning Tree Protocol QoS Supports Quality-of-Service for port-based, 802.1p VLAN and IPv4 TOS/IPv6 COS packets with four priority queues Supports RFC2475 DiffServ-based VLAN Supports up to 3 VLAN groups for port-based VLAN and 16 VLAN entries for 802.1Q tag-based VLAN function Supports Double tagging 802.1Q-in-802.1Q function for WAN access Security Supports ingress port security mode, incoming packets with unknown source MAC address could be dropped Supports eight Security MAC Registrations Supports 802.1X port-based Authorization Multicast Supports GMRP/GVRP/GARP packet snooping Supports IPv4 IGMP and IPv6 ICMP/MLD (Multicast Listener Discovery) Snooping Supports up to 1K Multicast Group (shared with L2 MAC table) Supports eight IGMP Multicast IP address snooping Monitoring Supports RMON group 1,2,3,9 counter (RFC1213) Supports Ethernet-like MIB counter (RFC 1643) Supports Bridge MIB counter (RFC 1493) Egress/Ingress Port Mirroring Sniffer functions Source/Destination Port DA/SA VLAN ID Ethernet Packet Type IPv4/IPv6 Protocol IPv4/IPv6 TCP/UDP Port Number Optional Interfaces Supported: MII or Reverse-MII RMII or Reverse-RMII Optional serial EEPROM Optional GPIO/GPI/GPO Single 3.3V power supply with options for 1.8V, 2.5V and 3.3V I/O voltage support Integrates an on-chip voltage regulator requiring only a single power supply of 3.3V Integrates an on-chip oscillator and PLL requiring only a 25MHz crystal to operate Integrates on-chip power-on reset circuit 128-pin E-PAD LQFP RoHS compliant package Operating temperature range: 0°C to +70°C

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