Single-Chip Solution with Integrated Five-Port Ethernet Switch

Conexant’s broadband communications portfolio includes a comprehensive suite of semiconductor solutions that enable the digital home and information network. The Conexant CX84200 Network Processor supports complete networking system solutions for a wide variety of mainstream applications in the residential and SOHO environments. Based on a 75 MHz ARM7TDMI, this Network Processor is a single-chip solution with an integrated switch that supports five 10/100 Mbps Ethernet ports.

CX84200 Features
• 5 Ethernet ports, 1 MII
• Embedded RISC CPU, 75MHZ ARM7TDMI
• Embedded switch engine
 - Store-and-forward operation
 - Non-blocking, full line speed capability
 - Full-duplex (IEEE802.3x) and half-duplex flow control (Back pressure)
 - Two priorities CoS, set by port, VLAN tag, TCPIP TOS, and customized type
 - 6 port grouping VLAN (overlappable)
 - MIB counters
 - Sharing dynamic data buffer management, embedded SSRAM
 - MAC look-up table read/write-able
 - MAC address level security
 - Bandwidth control
 - Hashing scheme: direct-map or XOR
• Embedded 10/100BaseT/TX PHY
 - DSP based design
 - 10BASE-T/100BASE-TX IEEE 802.3u Compliant
 - Digital Decision Feedback Equalizer
 - Integrated Baseline Wander Correction
 - 3 LEDs provided per port
• Flash interface (512Kx8, 512Kx16 up to 1Mx16)
• SDRAM interface (1Mx16x2 up to 4Mx16x2)
• 2 UART interface, one for the modem interface
• GPIO pins
• LAN / WAN bandwidth prioritized
• Single 25MHz crystal input for network
• 2.5/3.3V, 0.25u CMOS process, 208-pin PQFP