标签: ax88178a

AX88178A 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 AX88178A also integrates on-chip Gigabit Ethernet MAC and PHY (IEEE802.3, IEEE802.3u and IEEE802.3ab compatible). Additionally, the AX88178A needs only a single 25MHz crystal to drive both the USB and Ethernet PHYs. The AX88178A offers a wide array of features including IPv4/IPv6 checksum offload engine, crossover detection and auto-correction, TCP large send offload and IEEE802.3az EEE (Energy Efficient Ethernet). The EEE defines a mechanism that allows the AX88178A to enter a low power idle state to reduce power and to achieve a more energy efficient Ethernet. It supports dynamic cable length detection and dynamic power adjustment Green Ethernet in Gigabit mode. The AX88178A also offers multiple power management Wake-on-LAN features, including Magic Packet, Microsoft Wakeup Frame and Link Status Change that allows systems to enter a low power state and wake on desired network traffic.  

AX88178A的USB接口符合USB 2.0/1.1规范，千兆以太网MAC及PHY兼容于IEEE 802.3、IEEE 802.3u及IEEE 802.3ab协议。内置USB Host接口的微控制器搭配AX88178A，即可增加双绞线千兆以太**性。此外，AX88178A仅需单25MHz时钟即可正常工作。 AX88178A支持许多高级特性，包括IPv4/IPv6封包校验和承载引擎、双绞线交叉自适应、TCP大包传送承载及符合IEEE802.3az超节能以太网标准(EEE; Energy Efficient Ethernet)等。根据EEE，当以太网连结中没有数据流量时，AX88178A会进入低功耗模式，可以省掉不必要的耗电，让能源能更有效的被利用。在千兆模式时还可支持绿色以太网Green Ethernet，可自动侦测有线网络连结与使用状况，调整输出功率达到省电目的。AX88178A还支持网络远程唤醒(Wake-on-LAN)功能，系统进入低功率状态, 透过侦测网络连线状态变动、收到魔术包及Microsoft 唤醒包等事件来远程唤醒。   单芯片USB 2.0转10/100/1000M千兆以太网控制器，支持超节能以太网(EEE)标准及低消耗功率的数位讯号处理器(DSP)技术 USB 设备控制器 集成USB 2.0 PHY和控制器并兼容USB 2.0及1.1规范 支持USB高速/全速模式，电源驱动能力支持总线供电模式和自供电模式 利用独有的突发传输机制(己获得美国专利)，让USB总线上的封包传输速率达到极致 千兆以太网控制器 支持IEEE 802.3az (Energy Efficient Ethernet) 兼容IEEE 802.3、802.3u 和 802.3ab 集成10/100/1000Mbps千兆以太网 MAC/PHY 支持绿色以太网，可自动侦测有线网络连接和调整输出功率以达到省电目的(仅Gigabit模式) 支持并行检测及自动极性校正 支持交叉检测及自动更正 支持IPv4/IPv6封包校验和卸除引擎，以减轻CPU的负载，包括IPv4 IP/TCP/UDP/ICMP/IGMP、IPv6 TCP/UDP/ICMPv6 checksum的产生及核对 支持TCP大量传送承载V1 支持全双工IEEE 802.3x流量控制及半双工背压流量控制 支持 IEEE 802.1P 第2层优先编码和译码 支持IEEE 802.1Q VLAN tagging和两组VLAN ID过滤，所收到的4字节VLAN Tag可以选择被剥除或保留 支持Jumbo frame 具备MAC/PHY自环诊断 支持网络远程唤醒功能 支持休眠模式和通过网络链接状态变动、收到魔术包、收到Microsoft 唤醒封包及外部唤醒引脚状态变动等事件进行远程唤醒 支持Bonjour唤醒需求 先进的电源管理功能 支持电源管理及卸除 (ARP NS) 支持动态电源管理，以节省在空载、轻负载或断开网络线等状况下的功耗 当网络线被断开时，从USB Soft-disconnected 支持AutoDetach省电功能 当网络线被断开时，支持先进的断电节能功能 支持可选串行EEPROM (93c56/66) 用来储存USB描述符和Node-ID等信息 支持嵌入式eFuse (64位) 储存USB描述符和Node-ID等信息，可以替代外部存储的EEPROM 当上电启动后，支持自动从嵌入式eFuse或外部EEPROM加载USB描述符和Node-ID等信息 25MHz 时钟输入，支持晶体及钟振 内置上电复位(Power-on reset)电路 内置用于处理协议和控制功能的Pipelined RISC (System on a Chip, SoC) 68引脚QFN 8mm x 8mm 并符合RoHS/REACH规范   工作温度范围: 0°C to +70°C            

The AX88178 USB to 10/100/1000 Gigabit Ethernet/HomePNA/HomePlug controller is a high performance and highly integrated ASIC with embedded 40KB SRAM for packet buffering. It enables low cost and affordable Gigabit Ethernet network connection to desktop, notebook PC, and embedded system using popular USB ports. It has an USB interface to communicate with USB host controller and is compliant with USB specification V1.0, V1.1 and V2.0. It implements 10/100/1000Mbps Ethernet LAN function based on IEEE802.3, IEEE802.3u, IEEE802.3ab standards or HomePNA standard. It supports media-independent interface (MII) to simplify the design on implementing Fast Ethernet and HomePNA functions. It also provides gigabit media-independent (GMII) and reduced gigabit media-independent (RGMII) interface for interfacing with Gigabit Ethernet PHY.   Single chip USB to 10/100/1000 Gigabit Ethernet and HomePNA and HomePlug Network Controller. USB specification 1.0 and 1.1 and 2.0 compliant. Supports USB Full and High Speed modes with Bus power capability. Supports 4 endpoints on USB interface. High performance packet transfer rate over USB bus using proprietary burst transfer mechanism (US Patent Approval). IEEE 802.3, 802.3u and 802.3ab (10BASE-T, 100BASE-TX, and 1000BASE-T) compatible. Embedded 20KB SRAM for RX packet buffering and 20KB SRAM for TX packet buffering. Supports both full-duplex and half-duplex operation on Fast Ethernet. Provide MII/GMII/RGMII interfaces for Ethernet PHY interface and MII interface for HomePNA/HomePlug PHY interface. Supports Jumbo packet of up to 9KB. Supports suspend mode and remote wakeup via link-up, magic packet, or external pin. Optional PHY power down during suspend mode. 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. External PHY loop-back diagnostic capability. Integrates on-chip 3.3V to 2.5V voltage regulator and requires only single power supply: 3.3V. Small form factor with 128-pin LQFP package.   12MHz clock input from either crystal or oscillator source