Description

The ADM6996MX is a highly integrated four-port 10/100 Mbps TX/FX plus two 10/100 MAC port Ethernet switch controller. It is designed for low-cost applications in the SOHO market, such as 5-port switches and routers. The controller features a controller, PHY, and memory, and supports 10/100 Mbps full/half duplex on all ports.

Specifications and features

• Supports four 10M/100M auto-detect half/full duplex switch ports with TX/FX interfaces
• Supports two MII/GPSI ports
• Supports 2048 MAC addresses table
• Supports four queues for QoS
• Supports priority features by Port-Based, 802.1p VLAN & IP TOS of packets
• Supports store & forward architecture for nonblocking full wire speed forwarding and filtering
• Supports buffer allocation with 256 bytes per block
• Supports aging function enable/disable
• Supports per port 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 lengths up to 1522 bytes
• Includes broadcast storming filter function
• Supports 802.1Q VLAN with up to 16 VLAN groups implemented by the last four bits of VLAN ID
• Supports 2-bit MAC clone to support multiple WAN applications
• Supports TP interface Auto MDIX function for auto TX/RX swap by strapping-pin
• Includes easy management with 32-bit smart counter for per port RX/TX byte/packet count, error count, and collision count
• Supports PHY status output for management system
• Uses a 25M crystal for the whole system
• Comes in a 128 QFP package with 0.18um technology
• Requires 1.8V/3.3V power supply

Application Scenarios

The ADM6996MX is commonly used in SOHO 5-port switches and 5-port switches with a router and MII CPU interface.

Comparison

- High performance

- Low cost

- Highly integrated

- Supports 10/100 Mbps full/half duplex on all ports

- Supports QoS and priority features

- Requires external crystal