AX88772CLF USB 2.0 to 10/100M Fast Ethernet Controller

AX88772 Manufacturer: ASIX

AX88772 Package: LQFP64

AX88772 packaging: 2500/pack

AX88772 Model: AX88772CLF

AX88772C is a USB to Ethernet controller chip, and supports Microsoft AOAC (Always On Always Connected), which can add low-cost, small package, high-performance, high-integration, plug-and-play Fast Ethernet connectivity to various applications. It can be used in desktop computers, notebook computers, ultrabooks, computer bases (Cradles/Port replicators/Docking Stations), game consoles, smart home appliances and any embedded system with standard USB ports.

The USB port of the AX88772C conforms to the USB 2.0/1.1 specification, and the Fast Ethernet MAC and PHY are compatible with the IEEE 802.3 and IEEE 802.3u protocols. A microcontroller with a built-in USB Host port can be used with the AX88772C to add twisted pair Fast Ethernet features. In addition, the AX88772C requires only a single 25MHz clock to function properly.

The AX88772C supports many advanced features, including IPv4/IPv6 packet checksum bearer engine, Protocol Offload (ARP & NS), auto-correction of reversed-pair wiring (Auto-MDIX), and IEEE 802.3x/backpressure flow control. AX88772C also supports a variety of power management Wake-on-LAN functions, including receiving magic packets, Microsoft wake-up packets, detecting changes in network connection status, 32 sets of bitmap network remote wake-up modes and wake-up packet indication, etc. Allows the AOAC platform to enter the low-power Connected Standby state, and then wake up with the expected network packet.

AX88772C Specifications:

Single Chip USB 2.0 to 10/100M Fast Ethernet Controller

Single-chip USB 2.0 to RMII, supports HomePNA and HomePlug PHY

Single-chip USB 2.0 to Reverse-RMII, support MAC-to-MAC seamless connection

USB device interface

Integrated USB 2.0 Transceiver and Serial Interface Engine (SIE), Compliant with USB 1.1/2.0 Specifications

Support USB full-speed and high-speed mode, power drive capability supports bus-powered mode and self-powered mode

Supports 4 programmable USB bus endpoints (endpoints)

Support self-separation power saving mode, when it detects that the network cable is removed, it will actively disconnect from the USB host

Utilize a unique burst transfer mechanism (US patented) to maximize the packet transfer rate on the USB bus

Fast Ethernet Single Chip

Integrated 10/100M Fast Ethernet MAC/PHY

Compatible with IEEE 802.3 10Base-T/100Base-TX

Compatible with IEEE 802.3 100BASE-FX

Support twisted pair crossing detection and automatic correction (Auto-MDIX)

Built-in Packet Buffer SRAM

Built-in IPv4/IPv6 packet checksum bearer engine to reduce CPU load, support IPv4 IP/TCP/UDP/ICMP/IGMP, IPv6 TCP/UDP/ICMPv6 packet checksum generation and inspection

Supports full-duplex IEEE 802.3x flow control and half-duplex back pressure flow control

Support 2 VLAN ID filtering, after receiving VLAN Tag (4 bytes), you can choose to strip or retain

Support PHY self-loop diagnosis

Support multiple unicast MAC destination address filtering

Support network remote wake-up function

Supports Suspend mode and remote wakeup by detecting any changes in network connection status, receiving magic packets, receiving Microsoft wakeup packets, and detecting changes in EXTWAKEUP_N pin status.

Supports ARP & NS protocol offload for Windows 8 and 7 network power management

Sleep mode can choose to turn off the PHY power supply

Support 32 sets of bitmap network remote wake-up mode

Support wake-up packet indication

Support receive filter wake-up

Universal Expansion Media Interface

Optional RMII interface to support MAC working mode for AX88772C to connect external 100Base-FX or HomePNA PHY

Optional Reverse-RMII interface to support PHY working mode, support MAC-to-MAC seamless connection

Advanced Power Management Features

Supports dynamic power management to save power consumption under conditions such as no load, light load, or removal of network cables

Supports extremely low-power network remote wake-up mode when the system enters sleep mode and waits for network events to wake up

Supports 256/512 bytes (93c56/93c66) serial EEPROM (for storing descriptors)

Support embedded ID SRAM (USB Device Descriptors can be set by online program to save the cost of EEPROM)

Integrated voltage converter inside the chip, only requires a single 3.3V power supply

25MHz clock input, support crystal and oscillator

Built-in power-on reset circuit

Small 64-pin LQFP package and RoHS compliant

Operating temperature range: 0°C to 70°C