USB to LAN

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Description

The AX88772C USB 2.0 to 10/100M Fast Ethernet controller with Microsoft AOAC(Always On Always Connected) support is a high performance and highly integrated ASIC which enables a low cost, small form factor, and simple plug-and-play Fast Ethernet network connection capability for desktops, notebook PCs, Ultrabooks, cradles/port replicators/docking stations, game consoles, digital-home appliances, and any embedded system using a standard USB port. The AX88772C can be used in any embedded system with a USB host microcontroller requiring a twisted pair physical network connection. Featuring a USB interface (compliant with USB specification V2.0 and V1.1) to communicate with a USB Host Controller, the AX88772C also integrates on-chip Ethernet MAC and PHY (IEEE802.3 and IEEE802.3u compatible) and embedded memory. Additionally, the AX88772C needs only a single 25MHz crystal to drive both the USB and Ethernet PHYs. The AX88772C offers a wide array of features including IPv4/IPv6 checksum offload engine, Protocol Offload(ARP & NS), Auto-MDIX, and IEEE 802.3x and back-pressure flow control. The AX88772C also offers multiple power management Wake-on-LAN features, including Magic Packet, Microsoft Wakeup Frame, Link Status Change, 32 bitmap Wake on LAN Patterns and Wake Packet Indication that allows the AOAC platform to enter a low-power \"Connected Standby\" state and wake on a desired network pattern. Single chip USB 2.0 to 10/100M Fast Ethernet controller Single chip USB 2.0 to RMII, support HomePNA and HomePlug PHY Single chip USB 2.0 to Reverse-RMII, supports glueless MAC-to-MAC connections USB Device Interface Integrates on-chip USB 2.0 transceiver and SIE compliant to USB Spec 1.1 and 2.0 Supports USB Full and High Speed modes with Bus-Power or Self-Power capability Supports 4 endpoints on USB interface Supports AutoDetach power saving, Detach from USB host when Ethernet cable is unplugged High performance packet transfer rate over USB bus using proprietary burst transfer mechanism (US Patent Approval) Fast Ethernet Controller Integrates 10/100Mbps Fast Ethernet MAC/PHY IEEE 802.3 10Base-T/100Base-TX compatible IEEE 802.3 100BASE-FX compatible Supports twisted pair crossover detection and auto-correction (Auto-MDIX) Embeds SRAM for packet buffering Supports IPv4/ IPv6 packet Checksum Offload Engine to reduce CPU loading, including IPv4 IP/TCP/UDP/ICMP/IGMP & IPv6 TCP/UDP/ICMPv6 checksum check & generation Supports full duplex operation with IEEE 802.3x flow control and half duplex operation with back-pressure flow control Supports 2 VLAN ID filtering, received VLAN Tag (4 bytes) can be stripped off or preserved PHY loop-back diagnostic capability Supports Multiple unicast MAC destination address filter Support Wake-on-LAN Function Supports Suspend Mode and Remote Wakeup via Link-change, Magic packet, MS wakeup frame and external wakeup pin Supports Protocol Offloads (ARP & NS) for Windows 8 and 7 Networking Power Management Optional PHY power down during Suspend mode Supports 32 bitmap Wake on LAN Patterns Supports Wake Packet Indication Supports Receive Filter Wakeup Versatile External Media Interface Optional RMII interface in MAC mode allows AX88772C to work with HomePNA and HomePlug PHY Optional Reverse-RMII interface in PHY mode allows AX88772C to support glueless MAC-to-MAC connections Advanced Power Management Features Supports dynamic power management to reduce power dissipation during idle or light traffic period Supports very low power Wake-on-LAN (WOL) mode when the system enters suspend mode and waits for network event to wake it up Supports 256/512 bytes (93c56/93c66) of serial EEPROM (for storing USB Descriptors) Supports automatic loading of Ethernet ID, USB Descriptors and Adapter Configuration from EEPROM after power-on initialization Integrates on-chip voltage regulator and only requires a single 3.3V power supply Single 25MHz clock input from either crystal or oscillator source Integrates on-chip power-on reset circuit Small form factor with 64-pin LQFP RoHS compliant package Operating commercial temperature range 0°C to 70°C

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