78Q2123/78Q2133 MicroPHY 10/100BASE-TX Transceiver TM DATA SHEET Simplifying System Integration April 2010 DESCRIPTION FEATURES TM The 78Q2123 and 78Q2133, MicroPHY , are the Smallest 10/100 PHY available smallest 10BASE-T/100BASE-TX Fast Ethernet 10BASE-T/100BASE-TX IEEE-802.3 compliant transceivers in the market. They include integrated TX and RX functions requiring a dual 1:1 isolation MII, ENDECs, scrambler/descrambler, dual-speed transformer interface to the line clock recovery, and full-featured auto-negotiation Integrated MII, 10BASE-T/100BASE-TX ENDEC, functions. The transmitter includes an on-chip pulse- 100BASE-TX scrambler/descrambler, and shaper and a low-power line driver. The receiver has full-featured auto-negotiation function an adaptive equalizer and a baseline restoration Full duplex operation capable circuit required for accurate clock and data recovery. The transceiver interfaces to Category-5 unshielded Automatic MDI/MDI-X cross over correction twisted pair (Cat-5 UTP) cabling for 100BASE-TX Register-programmable transmit amplitude applications, and Category-3 unshielded twisted pair Automatic polarity correction during auto- (Cat-3 UTP) for 10BASE-T applications. The MDI is negotiation and 10BASE-T signal reception connected to the line media via dual 1:1 isolation Power-saving and power-down modes including transformers. No external filter is required. Interface transmitter disable to the MAC is accomplished through an IEEE-802.3 2 Programmable LED indicators (Link and compliant Media Independent Interface (MII). The Activity by default) 78Q2123/78Q2133 are intended to serve the embedded Ethernet market, tailored specifically to the User programmable Interrupt pin needs of game consoles, broadband modems, Package: 32-QFN (5x5 mm) printers, set top boxes and audio/visual equipment. It Low Power (~290mW) is designed for low-power consumption and operates Single 3.3 V 0.3V Supply from a single 3.3V supply. The 78Q2123 is rated for commercial temperature range and the 78Q2133 is 78Q2123 rated for 0C to 70C operation rated for industrial temperature range. 78Q2133 rated for -40C to 85C operation 4B/5B Encoder, 100M MRZ/NRZI Pulse Shaper Scrambler, MLT3 Encoder and Filter RXC Parallel/Serial Tx/Rx TXC TX CLK GEN Auto RXD MDI-X MII TXD 10M Parallel/Serial, Mux Rx/Tx Manchester Encoder SMI Auto Negotiation Carrier Sense, Collision Detect 10M 100M Manchester Decoder, Parallel/Serial CLK Adaptive EQ, Recovery MII Baseline Wander Correct, Registers Serial/Parallel MLT3 Decode, NRZI/NRZ Descrambler, LEDs Clock Reference 5B/4B Decoder Link Act 25MHz CLKIN Rev. 1.6 2010 Teridian Semiconductor Corporation 1 78Q2123/78Q2133 Data Sheet DS 21x3 001 Table of Contents 1 Functional Description .................................................................................................................. 5 1.1 General ................................................................................................................................... 5 1.1.1 Power Management .................................................................................................... 5 1.1.2 Analog Biasing and Supply Regulation ........................................................................ 5 1.1.3 Clock Selection............................................................................................................ 5 1.1.4 Transmit Clock Generation .......................................................................................... 5 1.1.5 Receive Signal Qualification ........................................................................................ 6 1.1.6 Receive Clock Recovery.............................................................................................. 6 1.2 100BASE-TX OPERATION ..................................................................................................... 6 1.2.1 100BASE-TX Transmit ................................................................................................ 6 1.2.2 100BASE-TX Receive ................................................................................................. 6 1.2.3 PCS Bypass Mode (Auto-negotiate must be off) .......................................................... 6 1.3 10BASE-T OPERATION ......................................................................................................... 7 1.3.1 10BASE-T Transmit..................................................................................................... 7 1.3.2 10BASE-T Receive...................................................................................................... 7 1.3.3 Polarity Correction ....................................................................................................... 7 1.3.4 SQE TEST .................................................................................................................. 7 1.3.5 Natural Loopback ........................................................................................................ 7 1.3.6 Repeater Mode............................................................................................................ 7 1.4 Auto-Negotiation ..................................................................................................................... 8 1.5 Media Independent Interface ................................................................................................... 9 1.5.1 MII Transmit and Receive Operation ............................................................................ 9 1.5.2 Station Management Interface ..................................................................................... 9 1.6 Additional Features ............................................................................................................... 10 1.6.1 LED Indicators ........................................................................................................... 10 1.6.2 Interrupt Pin............................................................................................................... 10 1.6.3 Automatic MDI/ MDI-X Configuration ......................................................................... 10 2 Pin Description ............................................................................................................................ 11 2.1 Legend ................................................................................................................................. 11 2.2 MII (Media Independent Interface) ......................................................................................... 11 2.3 Control and Status ................................................................................................................ 12 2.4 MDI (Media Dependent Interface).......................................................................................... 12 2.5 Oscillator/Clock ..................................................................................................................... 12 2.6 Power Supply and Ground .................................................................................................... 12 2.7 LED Signals (Programmability Is Secondary Requirement).................................................... 13 3 Register Description ................................................................................................................... 14 3.1 MR0: Control Register ........................................................................................................... 15 3.2 MR1: Status Register ............................................................................................................ 16 3.3 MR2: PHY Identifier Register 1.............................................................................................. 17 3.4 MR3: PHY Identifier Register 2.............................................................................................. 17 3.5 MR4: Auto-Negotiation Advertisement Register ..................................................................... 17 3.6 MR5: Auto-Negotiation Link Partner Ability Register ............................................................. 18 3.7 MR6: Auto-Negotiation Expansion Register ........................................................................... 18 3.8 MR16: Vendor Specific Register ............................................................................................ 18 3.9 MR17: Interrupt Control/Status Register ................................................................................ 20 3.10 MR18: Diagnostic Register .................................................................................................... 21 3.11 MR19: Transceiver Control................................................................................................... 21 3.12 MR20: Reserved ................................................................................................................... 21 3.13 MR21: Reserved ................................................................................................................... 21 3.14 MR22: Reserved ................................................................................................................... 21 3.15 MR23: LED Configuration Register........................................................................................ 22 3.16 MR24: MDI/MDIX Control Register ........................................................................................ 22 2 Rev. 1.6