ax88742

Manufacturer Part Numberax88742
DescriptionAsix Ax88742 - 2-port Ethernet Switch Controller
ManufacturerASIX Electronics Corporation
ax88742 datasheet
 


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Features
High Performance PCI Bus
Supports 32-bit 33MHz PCI host interface,
easily interface to most common embedded
MCUs
Supports PCI Bus Master mode and ACPI
Management function
Supports
PPPoE/IPv4
IGMP checksum offload to relieve CPU loading
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 (4K ~
100M bps)
Integrates two-way Address-Lookup engine and
table for 1K MAC addresses
Supports Routing Table/IGMP/VLAN Table
access through PCI 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 functions
Supports Double tagging 802.1Q-in-802.1Q
Product Description
The AX88742 is a PCI 2-port 10/100M Ethernet controller which integrates a 3-port switching fabric, three 10/100M
MACs, two 10/100M PHYs, and an 32-bit PCI bus interface. This controller is targeted at embedded system
applications that need to support two Ethernet ports, typically one for a LAN port and one for a WAN port. The
AX88742 supports a popular 32-bit 33MHz PCI bus interface with bus master mode data transfer and routine packet
checksum calculation which makes it easy to provide high performance 2-port Ethernet connectivity solutions for any
embedded MCU. The built-in switching fabric supports non-blocking wire-speed forwarding and provides four priority
queues for advanced QoS functions including Port-Based, 802.1p VLAN, IPv4 TOS/IPv6 COS for voice, video, audio
and data traffic classification. The AX88742 combines the benefits of high integration and flexibility which makes it an
ideal single-chip solution for designing high performance, QoS-aware, cost effective and small form factor 2-port
Ethernet function for any embedded system application.
ASIX Electronics Corporation
4F, No.8, Hsin Ann Rd.,
Hsinchu Science Park,
Hsinchu 30078, Taiwan
32-bit PCI 2-Port 10/100M Fast Ethernet Controller
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
IP/TCP/UDP/ICMP/
Supports 802.1X port-based Authorization
Multicast
Supports GMRP/GVRP/GARP packet snooping
Supports up to 1K Multicast Group (shared with
L2 MAC table)
Supports eight IGMP Multicast IP address
snooping
Monitoring
Supports
(RFC1213)
Supports Ethernet-like MIB counter (RFC 1643)
Supports Bridge MIB counter (RFC 1493)
Egress/Ingress Port Mirroring
Sniffer functions:
Optional Interfaces Supported:
MII or Reverse-MII
RMII or Reverse-RMII
Optional serial EEPROM
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 LQFP RoHS compliant package
Operating temperature range: 0°C to 70°C
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AX88742
Product Brief
RMON
group
1,2,3,9
Source/Destination Port
DA/SA
VLAN ID
Ethernet Packet Type
IPv4/IPv6 Protocol
IPv4/IPv6 TCP/UDP Port Number
Released Date: 2/22/2008
TEL: +886-3-579-9500
FAX: +886-3-579-9558
http://www.asix.com.tw/
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ax88742 Summary of contents

  • Page 1

    ... QoS functions including Port-Based, 802.1p VLAN, IPv4 TOS/IPv6 COS for voice, video, audio and data traffic classification. The AX88742 combines the benefits of high integration and flexibility which makes it an ideal single-chip solution for designing high performance, QoS-aware, cost effective and small form factor 2-port Ethernet function for any embedded system application ...

  • Page 2

    ... Port Redundancy and Port Monitoring Single Board Computers (SBC) Product Selection Guide ASIX Electronics Corporation 4F, No.8, Hsin Ann Rd., Hsinchu Science Park, Hsinchu 30078, Taiwan 32-bit PCI 2-Port 10/100M Fast Ethernet Controller 2 AX88742 Released Date: 2/22/2008 TEL: +886-3-579-9500 FAX: +886-3-579-9558 http://www.asix.com.tw/ ...