STE400P

STE400P 10/100 FAST ETHERNET 4 PORT TRANSCEIVER 1 GENERAL DESCRIPTION The STE400P, also referred to as STEPHY4, is a high performance Fast Ethernet physical layer interface for 10BASE-T and 100BASE-TX applications. It was designed with advanced CMOS technology to provide a Media Independent Interface (MII) for easy attachment to 10/100 Media Access Controllers (MAC) and a physical media interface for 100BASETX of IEEE802.3u and 10BASE-T of IEEE802.3. The STE400P supports both half-duplex and full-duplex operation, at 10 and 100 Mbps operation. Its operating mode can be set using auto-negotiation, parallel detection or manual control. It also allows for the support of auto-negotiation functions for speed and duplex detection. 2 FEATURES PQFP208 ORDERING NUMBER: STE400P 10BASE-T compliant s s Support for IEEE802.3x flow control IEEE802.3u Auto-Negotiation support for 10BASE-T and 100BASE-TX MII interface Standard CSMA/CD or full duplex supported 2.1 INDUSTRY STANDARD s s s IEEE802.3u 100BASE-TX and IEEE802.3 Figure 1. BLOCK DIAGRAM FOR 1 PORT LEDS LEDS 100Mb/s TX_CLK TXD[3:0] TX_ER TX_EN Serial Management TX Channel Scrambler Parallel to Serial NRZ To NRZI Encoder Binary To MLT3 Encoder TRANSMITTER 10/100 10 TX Filter TXP TXN 4B/5B 10Mb/s NRZ To Manchester Encoder Link Pulse Generator MDIO Interface / Controller MDC REGISTERS Auto Negotiation Loopback Clock Generation System Clock RXD[3:0] RX_ER RX_DV RX_CLK MII RX Channel 100Mb/s 4B/5B Descrambler C...