GENERAL DESCRIPTION :
The VSC8204 is a low power, low cost, quad port Gigabit Ethernet PHY. It is ideal for Gigabit Ethernet Switch applications that require a GMII/MII, RGMII, TBI, or RTBI MAC / Switch interface. Vitesse’s proprietary DSP technology yields robust performance and low power consumption, supporting 1000BASE-T over unshielded twisted pair (UTP) cable, with more than 5dB of design margin with respect to all worst-case impairments (NEXT, FEXT, Echo, and system noise sources).

FEATURES :
► Four, Triple Speed (10/100/1000BASE-T) Transceivers in a Single 388- Pin Thermally Enhanced HS-PBGA Package
► 1000BASE-T Power Consumption of <1W per Port
► Integrated Series Termination Resistors on MAC Interface Pins
► Integrated RGMII Timing Compensation Eliminates PCB Design Challenges
► VeriPHY™ Cable Diagnostics Software Suite
► Fully IEEE 802.3, 802.3u (10BASE-T, 100BASE-TX) & 802.3ab (1000BASE-T) Compliant
► Automatic Detection and Correction of Cable Pair Swaps, Pair Skew, and Pair Polarity, Along with Auto MDI/MDI-X Crossover Function
► Choice of Standard GMII/MII or TBI, or Pin Saving RGMII/RTBI Interfaces
► Optional, Integrated Oscillator Circuit
► >10KB Jumbo Frame Support with Programmable Synchronization FIFOs
► Manufactured in Mainstream, 3.3V / 1.5V Digital CMOS rocess

BENEFITS :
► Enables Widespread, Low Cost, 1000BASE-T Deployment in Gigabit Ethernet and Switches
► Eliminates Expensive Fans and Heat Sinks
► Improves Signal Integrity, Reduces EMI, and Eliminates More Than 600 External Components in 48-port Switch Blade Applications
► Decreases Board Design Efforts, Increases PCB Timing Margins and Yields, and Shortens Time-to-market
► Enables Network Manufacturers to Simplify Deployment and Improve Network Management Capabilities of Gigabit Ethernet Links
► Ensures Seamless Deployment Throughout Category-5 Networks
► Compatible with 1st Generation 1000BASE-T PHYs, Allowing Trouble Free Migration to 1000BASE-T by Minimizing Common Interoperability Problems
► Compatible with a Wide Variety of MACs and Switches
► Supports Single Low Cost 25MHz Crystal, or Either a 25MHz or 125MHz Standard Reference Clock Input
► Provides Support for Maximum Jumbo Frame Sizes in Custom LAN and SAN Systems
► Cost Effective Manufacturing Process Eliminates Expensive Analog Process Variants

APPLICATIONS :
► Desktop LAN and SAN Switches with High Density 10/100/1000BASE-T Ports
► Workgroup & Campus Switches, Routers
► High Performance, Multi-port Server NICs