80221 Datasheet | LSI

.. 80220/80221 80220/80221 100BASE-TX/10BASE-T Ethernet Media Interface Adapter Features s Single Chip 100Base-TX / 10Base-T Physical Layer Solution s Dual Speed - 100/10 Mbps s Half And Full Duplex s MII Interface To Ethernet Controller s MI Interface For Configuration & Status s Optional Repeater Interface s Auto Negotiation: 10/100, Full/Half Duplex s Meets All Applicable IEEE 802.3, 10Base-T, 100Base-TX Standards s On Chip Wave Shaping - No External Filters Required s Adaptive Equalizer s Baseline Wander Correction s Interface to External 100Base-T4 PHY s LED Outputs - Link - Activity - Collision - Full Duplex - 10/100 - User Programmable s Many User Features And Options s Few External ponents s Pin configuration - 44L PLCC - 80220 - 64L LQFP - 80221 Note: Check for latest Data Sheet revision before starting any designs. SEEQ Data Sheets are now on the Web, at .lsilogic.. This document is an LSI Logic document. Any reference to SEEQ Technology should be considered LSI Logic. Description The 80220/80221 are highly integrated analog interface IC's for twisted pair Ethernet applications. The 80220/ 80221 can be configured for either 100 Mbps (100Base TX) or 10 Mbps (10Base-T) Ethernet operation. The 80220 is packaged in a 44L package, while the 80221 is packaged in a 64L package and contains a few more Features . The 80220/80221 consist of 4B5B/Manchester encoder/ decoder, scrambler/descrambler, 100Base-TX/10Base-T twisted pair transmitter with wave shaping and output driver, 100Base-TX/10Base-T twisted pair receiver with on chip equalizer and baseline wander correction, clock and data recovery, Auto Negotiation, controller interface (MII), and serial port (MI). The addition of internal output waveshaping circuitry and on-chip filters eliminates the need for external filters normally required in 100Base-TX and 10Base-T applications. The 80220/80221 can automatically configure itself for 100 or 10 Mbps and Full or Half Duplex...