[Altima Communications Inc.]

GENERAL DESCRIPTION
The AC104QF is a highly integrated, 3.3V, low power, four port, 10Base-T/100Base-TX/FX, Ethernet transceiver implemented in 0.35mm CMOS technology. Multiple modes of operation including normal operation, test mode and power saving mode are available through either hardware or software control.

FEATURES
• 4 RMII
    • RMII 5Volt tolerant and 2.5Volt capable
• 4 10/100 TX or 3 10/100 TX and 1 100 FX
    • Full Duplex or Half Duplex
    • FEFI on 100FX
• Very small package
    • 100PQFP
• Very low power – TYP < 280mW (/ port)
    • Cable Detect mode – TYP < 40mW (/ port)
    • Power Down mo de – TYP < 3.3mW (/ port)
    • Selectable TX drivers for 1:1 or 1.25:1 transformers for additional power reduction
• 3.3Volt .35micron CMOS
• Fully compliant with
    • IEEE 802.3 / 802.3u
    • RMII
    • UNH test labs
• Baseline Wander Compensation
• Multi-Function LED outputs
• Cable length indicator
• Reverse polarity detection and correction with Register Bit indication – Automatic or Forced
• 8 programmable interrupts
• Diagnostic registers