Samurai
ADM6996LC/LCX/LHX
Product Overview
1
Product Overview
1.1
Overview
The Samurai (ADM6996LC/LCX/LHX) is a high performance, low cost, highly integrated (Controller, PHY and
Memory) five-port 10/100 Mbit/s TX/FX plus one 10/100 MAC port Ethernet switch controller with all ports
supporting 10/100 Mb/s Full/Half duplex. The ADM6996LC/LCX/LHX is intended for applications for stand alone
bridges for low cost SOHO markets such as Wire/ADSL/Wireless Router, IP Set Top Box, VDSL2, Gateway and
HomePNA/HomePlug applications. The ADM6996LCX is the environmentally friendly “green” package version.
The LH solution contains a heat sink which can be used in special circumstances but is not recommended for all
projects.
ADM6996LC/LCX/LHX provides advanced functions such as:802.1p(Q.O.S.), Port-based/Tag-based VLAN,
Port MAC address Locking, Management, Port Status, MAC Address Access and Bandwidth Control.
The ADM6996LC/LCX/LHX also supports Back Pressure in Half-Duplex mode and 802.3x Flow Control Pause
packet in Full-Duplex mode to prevent packet loss when buffer is full. When Back Pressure is enabled, and there
is no receive buffer available for the incoming packet, the ADM6996LC/LCX/LHX 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 packet buffering is divided into 256 bytes/block to achieve the optimized memory
utilization through complicated link lists on packets with various lengths.
ADM6996LC/LCX/LHX also supports priority features by Port-Base, VLAN, IP TOS, TCP/UDP Layer4 destination
port number, MAC destination address field checking. Users can be 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 8:4:2:1 fairness queuing to fit the bandwidth demand on various types of packets
such as Voice, Video and Data. Tag/Untag, and up to 16 groups of VLAN also is supported.
An intelligent address recognition algorithm makes ADM6996LC/LCX/LHX to recognize up to 2K different MAC
addresses and enables filtering and forwarding at full wire speed.
Port MAC address Locking function is also supported by ADM6996LC/LCX/LHX to use on Building Internet access
to prevent multiple users sharing one port traffic.
1.2
Features
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Supports five 10M/100M auto-detect Half/Full duplex switch ports with TX/FX interfaces and one MII/GPSI
port.
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Supports 2K MAC addresses table with 4-ways associative hash algorithm.
6KX64 bits packet buffers are divided into 192 blocks of 256 bytes each
Supports four queue for QoS
Supports priority features by Port-Based, 802.1p, IP TOS of packets, Layer4 TCP/UDP destination port
number and MAC address DA.
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Supports MAC dress accessible such as Search, Add and Delete.
Supports Engress/Ingress Scalable Bandwidth control.
Supports Store & Forward architecture and performs forwarding and filtering at non-blocking full wire speed.
Supports Aging function Enable/Disable.
Supports Single/Dual color mode with Power On auto diagnostic.
Supports 802.3x Flow Control pause packet for Full Duplex in case buffer is full.
Supports Back Pressure function for Half Duplex operation in case buffer is full.
Supports packet length up to 1518/1522 (Default)/1536/1784 bytes in maximum.
Broadcast/Multicast Storm Suppression.
Data Sheet
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Revision 1.4, 2006-03-24