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RTL8204B-VC-GR
Single-Chip 5-port 10/100Base-TX PHY Transceiver
 
General Description

The RTL8204B-VC-GR is a single-chip highly integrated 5-port,
10Base-T/100Base-TX Ethernet transceiver implemented in 0.16µm CMOS technology. It is currently the world’s smallest 5-PHY chip package. Flexible hardware settings are provided to configure the various operating modes of the chip.

The RTL8204B-VC-GR provides 5 separate and independent channels. Each channel consists of a SMII/SS-SMII interface-to-MAC controller, and hardware pins are used to configure the interface for SMII, or SS-SMII mode.

A PECL (Pseudo Emitter Coupled Logic) receiver accepts input from a transceiver and directly passes it to a clock recovery circuit for data/clock recovery. The chip utilizes an advanced CMOS process to meet low voltage and low power requirements. With on-chip DSP (Digital Signal Processing) technology, the chip provides excellent performance under all operating conditions.

A built-in UTP cable tester diagnoses an open/short fault in an attached cable. The RTL8204B-VC-GR also features very low power consumption. Additionally, pin-outs are designed to provide optimized direct routing, which simplifies the layout work and reduces possible EMI noise.

 
Features
  • Supports 5-port integrated physical layer and transceiver for 10Base-T and 100Base-TX
  • Robust baseline wander correction for improved 100Base-TX performance
  • Complies with IEEE 802.3/802.3u
  • IEEE 802.3u compliant auto negotiation for 10/100Mbps control
  • Hardware controlled Flow control advertisement ability
  • Supports SMII/SS-SMII interfaces
  • Very low power consumption
  • Supports two power reduction methods:
    • Power saving mode (cable detection)
    • Power down mode
  • Power-on auto reset function eliminates the need for external reset circuits
  • Crossover detection and auto correction
  • Polarity detection and Auto Correction
  • Flexible serial/scan LED display modes
  • Cable tester for diagnosing open/short faults in attached cables
  • Supports 125MHz clock output
  • 128-pin QFP package
  • 1.8V/3.3V or 1.8V/2.5V power supply
  • 0.16µm, CMOS technology
Applications
  • 5 PHY for Fast Ethernet switch with twisted pair interface

 

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