Description
Simplifying System IntegrationTM 78Q2123/78Q2133 MicroPHYâ„¢ 10/100BASE-TX Transceiver DATA SHEET .
The 78Q2123 and 78Q2133, MicroPHYTM, are the smallest 10BASE-T/100BASE-TX Fast Ethernet transceivers in the market.
Features
* x Smallest 10/100 PHY available x 10BASE-T/100BASE-TX IEEE-802.3 compliant
TX and RX functions requiring a dual 1:1 isolation transformer interface to the line x Integrated MII, 10BASE-T/100BASE-TX ENDEC, 100BASE-TX scrambler/descrambler, and full-featured auto-negotiation function x Full duplex ope
Applications
* and Category-3 unshielded twisted pair (Cat-3 UTP) for 10BASE-T applications. The MDI is connected to the line media via dual 1:1 isolation transformers. No external filter is required. Interface to the MAC is accomplished through an IEEE-802.3 compliant Media Independent Interface (MII). The 78Q21