LXT970A Datasheet | Intel Corporation

Dual-Speed Fast Ethernet Transceiver The LXT970A is an enhanced derivative of the LXT970 10/100 Mbps Fast Ethernet PHY Transceiver that supports selectable driver strength capabilities and link-loss criteria. The LXT970A supports 100BASE-TX, 10BASE-T, and 100BASE-FX applications. It provides a Media Independent Interface (MII) for easy attachment to 10/100 Media Access Controllers (MAC)s and a pseudo-ECL interface for use with 100BASE-FX fiber networks. The LXT970A supports full-duplex operation at 10 and 100 Mbps. Its operating condition is set using auto-negotiation, parallel detection or manual control. The encoder may be bypassed for symbol mode applications. The LXT970A is fabricated with an advanced CMOS process and requires only a single 5V power supply. The MII may be operated independently with either a 5V or a 3.3V supply. Applications s s bination 10BASE-T/100BASE-TX Network Interface Cards (NICs) 10/100 Switches, 10/100 Printservers s 100BASE-FX Network Interface Cards (NICs) Product Features s s s s s IEEE 802.3 pliant: - 10BASE-T and 100BASE-TX using a single RJ-45 connection. - Supports auto-negotiation and parallel detection for legacy systems. - MII interface with extended register capability. Robust baseline wander correction performance. 100BASE-FX fiber optic capable. Standard CSMA/CD or full-duplex operation. Configurable via MII serial port or external control pins. s s s s s s Configurable for DTE or switch applications. CMOS process with single 5Vsupply operation with provision for interface to 3.3V MII bus. Integrated LED drivers. Integrated supply monitor and line disconnect during low supply fault. Available in: - 64-pin TQFP (LXT970ATC) - 64-pin PQFP (LXT970AQC) mercial temperature range (0 - 70o C ambient). As of January 15, 2001, this document replaces the Level One document LXT970A - Dual-Speed Fast Ethernet Transceiver. Order Number: 249099-001 January 2001 Information in this document is...