SR9900

The Supereal SR9900 10/100M Ethernet controller combines an IEEE 802.3u compliant Media Access Controller (MAC), USB bus controller, and embedded memory. A linear regulator (LDO) is incorporated for reduced BOM cost. With state-of-the-art DSP technology and mixed-mode signal technology, the SR9900 offers high-speed transmission over CAT 5 UTP cable or CAT 3 UTP (10Mbps only) cable. Functions such as Crossover Detection and AutoCorrection, polarity correction, adaptive equalization, cross-talk cancellation, echo cancellation, timing recovery, and error correction are implemented to provide robust transmission and reception capabilities. The SR9900 features embedded One-Time-Programmable (OTP) memory. Advanced Configuration Power management Interface (ACPI)—power management for modern operating systems that are capable of Operating System-directed Power Management (OSPM)—is supported to achieve the most efficient power management possible. In addition to the ACPI feature, remote wake-up (including AMD Magic Packet and Microsoft Wake-Up Frame) is supported in both ACPI and APM (Advanced Power Management) environments. The SR9900 supports Microsoft Wake Packet Detection (WPD) to provide Wake-Up Frame information to the OS, e.g., PatternID, OriginalPacketSize, SavedPacketSize, SavedPacketOffset, etc. WPD helps prevent unwanted/ unauthorized wake-up of a sleeping computer. The SR9900 is fully compliant with Microsoft NDIS5, NDIS6 (IPv4, IPv6, TCP, UDP) Checksum features, and supports IEEE 802 IP Layer 2 priority encoding and IEEE 802.1Q Virtual bridged Local Area Network (VLAN). The above features contribute to lowering CPU utilization, especially benefiting performance when in operation on a network server. The SR9900 supports Protocol offload. It offloads some of the most common protocols to NIC hardware in order to prevent spurious wake-up and further reduce power consumption. The SR9900 can offload ARP (IPv4) and NS (IPv6) protocols while in the D3 power saving state. The SR9900 supports IEEE 802.3az-2010, also known as Energy Efficient Ethernet (EEE). IEEE 802.3az operates with the IEEE 802.3 Media Access Control (MAC) Sublayer to support operation in Low Power Idle mode. When the Ethernet network is in low link utilization, EEE allows systems on both sides of the link to save power. The SR9900 also features USB 2.0 technology. It provides higher bandwidth and improved protocols for data exchange between the host and the device. In addition, USB 2.0 offers a more aggressive power management feature that enables selective suspend to save energy. The SR9900 is suitable for multiple market segments and emerging applications, such as desktop, mobile, workstation, server, communications platforms, docking station, and embedded applications.

SR9900是一个高集成度、超低功耗、单芯片USB2.0转10/100M以太网控制电路。为各类应用增加低成本、小型封装、即插即用的快速以太网功能，可用于台式电脑、笔计本电脑、超便携式电脑、平板电脑、托架端口复制器/扩展坞、游戏机、智能家居及任何有USB接口的嵌入式设备。 SR9900内部集成USB 2.0收发器、基于IEEE802.3和IEEE802.3az-2010的10/100M以太网模块、以及高效的内存控制模块。 SR9900完全兼容Microsoft 的NDIS5、NDIS6（IPv4、IPv6、TCP、UDP）Checksum特性。并支持IEEE802 IP2层优先编码，以及IEEE802.1Q虚拟本地网（VLAN）。

• Supports USB 2.0 and 1.1
• Integrated 10/100M transceiver
• Supports Full Duplex flow control (IEEE 802.3x)
• Fully compliant with IEEE 802.3, IEEE 802.3u
• Supports IEEE 802.1P Layer 2 Priority Encoding
• Supports IEEE 802.1Q VLAN tagging
• Supports IEEE 802.3az-2010 (EEE)
• Auto-Negotiation with Next Page capability
• Microsoft AOAC (Always On Always Connected)
• Supports Wake-Up Frame pattern exact matching
• Supports link change wake up
• Supports Microsoft WPD (Wake Packet Detection)
• Supports Protocol Offload (ARP & NS)
• Microsoft NDIS5, NDIS6 Checksum Offload (IPv4, IPv6, TCP, UDP) and Segmentation Task-offload (Large send v1 and Large send v2) support
• Supports pair swap/polarity/skew correction
• Crossover Detection & Auto-Correction
• XTAL-Less Wake-On-LAN
• Supports 25MHz external clock (from oscillator or system clock source)
• Supports power down/link down power saving
• Transmit/Receive on-chip buffer support
• Embedded OTP memory
• Low power supply 1.2V 3.3V and 5.0V; 1.2V and 3.3V are generated by internal linear regulator (LDO)
• Supports Customizable LEDs
• Controllable LED Blinking Frequency and Duty Cycle
• Supports hardware CRC (Cyclic Redundancy Check) function
• LAN disable with GPIO pin
• Supports LPM (Link Power Management)
• SPI Flash Interface
• Supports CDC-ECM
• 24-pin QFN ‘Green’ package 0.11μm CMOS process
• 单芯片USB2.0转10/100M快速以太网控制器USB设备接口
• 集成USB2.0收发器，符合USB2.0 协议
• 支持USB全速及高速模式
• 快速10/100M以太网接口
• 集成10/100M快速以太网MAC和PHY模块
• 兼容IEEE 802.3 10Base-T/100Base-TX
• 兼容IEEE 802.3 100Base-FX
• 自动协商功能
• 支持双绞线交换、极性、相位偏移校正
• 网线交叉检测及自动校正
• 支持无振荡的网络唤醒
• 内置TX/RX 封包缓存
• 内置IPv4/IPv6封包校验和承载引擎，支持IPv4 TCP/IP/UDP/ICMP/IGMP、IPv6TCP/UDP/ICMPv6封包校验的生成和检查
• 支持全双工IEEE 802.3x流量控制及半双工冲突压力回退流量控制
• 支持IEEE 802.1Q VLAN 标记
• 支持IEEE 802.3az-2010（EEE）
• 支持网络远程唤醒功能
• 支持休眠模式
• 支持通过网络链接状态改变、魔术包、Microsoft唤醒包等事件进行远程唤醒
• 支持Protocol Offloads（ARP和NS）
• 休眠模式下可选择网络低功耗或关闭PHY供电
• 先进的电源管理功能
• 支持动态电源管理以节省在空载或轻负载状态下的功耗
• 支持IEEE 802.3az-2010（EEE）