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ADM6996F

6 port 10/100 Mb/s Single Chip Ethernet Switch Controller

Infineon Technologies 

ADM6996F

Product Review

Chapter 1 Product Overview

1.1 Overview

The ADM6996F is a high performance, low cost, highly integrated (Controller, PHY and

Memory) four-port 10/100 Mbps TX/FX plus two 10/100 MAC port Ethernet switch

controller with all ports supporting 10/100 Mbps Full/Half duplex. The ADM6996F is

intended for applications to stand alone bridge for low cost SOHO markets such as 5Port,

Router applications. The 2nd MAC can be configured as PCS type MII with 10/100 PHY

integrated.

ADM6996F provides the most advance functions such as: 802.1p(Q.O.S.),

802.1q(VLAN), Port MAC address Locking, Management, Port Status, TP Auto-

MDIX, 25M Crystal & Extra MII port functions to meet customer requests on Switch

demand.

The ADM6996F also supports Back Pressure in Half-Duplex mode and 802.3x Flow

Control Pause packet in Full-Duplex mode to prevent packet loss when buffers are full.

When Back Pressure is enabled, and there is no receive buffer available for the incoming

packet, the ADM6996F will issue a JAM pattern on the receiving port in Half Duplex

mode and transmit the 802.3x Pause packet back to receiving end in Full Duplex mode.

The built-in SRAM used for the packet buffer and address learning table is divided into

256 bytes/block to achieve the optimized memory utilization through complicated link

list on packets with various lengths.

ADM6996F also supports priority features by Port-Base, VLAN and IP TOS field

checking. Users can easily set different priority modes in individual ports, through a

small low-cost micro controller to initialize or on-the-fly to configure. Each output port

supports four queues in the way of fixed N: 1 fairness queuing to fit the bandwidth

demand on various types of packet such as Voice, Video and data. 802.1Q, Tag/Untag,

and up to 16 groups of VLAN are also supported.

An intelligent address recognition algorithm allows ADM6996F to recognize up to 2048

different MAC addresses and enables filtering and forwarding at full wire speed.

Port MAC address Locking function is also supported by ADM6996F to use on Building

Internet access to prevent multiple users sharing one port traffic.

Infineon-ADMtek Co Ltd

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