LAN8720AI-CP-TR

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1. Describe

LAN8720A/LAN8720AI-CP-TR is a low-power 10BASE-T/100BASE-TX physical layer (PHY) transceiver with a variable I/O voltage that complies with the IEEE 802.3-2005 standard. LAN8720A/LAN8720Ai supports communication with Ethernet MAC through standard RMII interface. It contains a full-duplex 10-BASE-T/100BASE-TX transceiver and supports 10Mbps (10BASE-T) and 100Mbps (100BASE-TX) operation. LAN8720A/LAN8720Ai implement auto-negotiation to automatically determine the best possible speed and duplex mode of operation. life value Auto-MDIX support allows the use of direct connection or crossover LAN cables. LAN8720A/LAN8720Ai supports IEEE 802.3-2005 compatibility and vendor-specific register functions. However, this operation does not require register access. The initial configuration may be It is selected by configuration pins. Register optional configuration options can be used to further define the transceiver. According to the IEEE 802.3-2005 standard, all digital interface pins can withstand 3.6V. The device can be configured to run on a single 3.3V power supply using an integrated 3.3V to 1.2V linear regulator. This can selectively disable the linear regulator, allowing the use of a high-efficiency external regulator to reduce system power consumption. LAN8720A/LAN8720Ai can be used to extend the commercial and industrial temperature range Version.

2. Feature

    1. High performance 10/100 Ethernet transceiver

        — Conform to IEEE802.3/802.3u (Fast Ethernet)

        — Comply with ISO 802-3/IEEE 802.3 (10BASE-T)

        — Loopback mode

        — Auto-negotiation

        — Automatic polarity detection and correction

        — Link status change wake-up detection

        — Vendor-specific register functions

        — Support RMII interface with reduced pin count

    2. Power and I/O

        — Multiple low power consumption modes

        — Integrated power-on reset circuit

        — Two status LED outputs

        — The latch-up performance of each EIA/JESD exceeds 150mA 78, level 2

        — Can be used with a single 3.3V power supply

    3. Additional features

        — Able to use low-cost 25Mhz crystal to reduce BOM

    4. Bag

        — 24-pin QFN (4x4 mm) lead-free RoHS compatible Package with RMII

    5. environmental

        — Extended commercial temperature range (0°C to +85°C)

        — Available in industrial temperature range version (-40°C to +85°C)

3. Pin configuration

4. Emphasize

    1. Single chip Ethernet physical layer transceiver (Physical layer)

    2. Comprehensive flexPWR® technology

        — Flexible power management architecture

        — LVCMOS variable I/O voltage range: +1.6V to +3.6V

        — Integrated 1.2V voltage regulator

    3. HP Auto-MDIX support

    4. Mini 24-pin QFN RoHS compatible lead-free Package (4 x 4 x 0.85 mm high).

5. Application

    1. Set-top box

    2. Networked printers and servers

    3. test instrument

    4. LAN on the motherboard

    5. Embedded Telecom Applications

    6. Recording/playback system

    7. Cable Modem/Router

    8. DSL Modem/Router

    9. Digital Video Recorder

  10. IP and video telephony

  11. Wireless access point

  12. Digital Television

  13. Digital Media Adapter/Server

  14. Game console

  15. POE application

6. Function Description

    1. transceiver

    2. Auto-negotiation

    3. HP Auto-MDIX support

    4. MAC interface

    5. Serial Management Interface (SMI)

    6. Interrupt management

    7. Configuration belt

    8. Other functions

    9. Application diagram