[Teridian Semiconductor Corporation]

DESCRIPTION
The 78Q2123 and 78Q2133, MicroPHY™, are the smallest 10BASE-T/100BASE-TX Fast Ethernet transceivers in the market. They include integrated MII, ENDECs, scrambler/descrambler, dual-speed clock recovery, and full-featured auto-negotiation functions. The transmitter includes an on-chip pulse shaper and a low-power line driver.

FEATURES
•  Smallest 10/100 PHY available
•  10BASE-T/100BASE-TX IEEE-802.3 compliant TX and RX functions requiring a dual 1:1 isolation transformer interface to the line
•  Integrated MII, 10BASE-T/100BASE-TX ENDEC, 100BASE-TX scrambler/descrambler, and full featured auto-negotiation function
•  Full duplex operation capable
•  Automatic MDI/MDI-X cross over correction
•  Register-programmable transmit amplitude
•  Automatic polarity correction during auto negotiation and 10BASE-T signal reception
•  Power-saving and power-down modes including transmitter disable
•  2 Programmable LED indicators (Link and Activity by default)
•  User programmable Interrupt pin
•  Package:  32-QFN (5x5 mm) 32-TPFP (5x5 mm)
•  Low Power (~290mW)
•  Single 3.3 V ±0.3V Supply
•  78Q2123 rated for 0°C to 70°C operation
•  78Q2133 rated for -40°C to 85°C operation