78Q2123/78Q2133 MicroPHY 10/100BASE-TX Transceiver TM DATA SHEET SimplifyingSystemIntegration DESCRIPTION FEATURES TM The 78Q2123 and 78Q2133, MicroPHY , are the x Smallest 10/100 PHY available smallest 10BASE-T/100BASE-TX Fast Ethernet x 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 x 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 x Full duplex operation capable circuit required for accurate clock and data recovery. The transceiver interfaces to Category-5 unshielded x Automatic MDI/MDI-X cross over correction twisted pair (Cat-5 UTP) cabling for 100BASE-TX x Register-programmable transmit amplitude applications, and Category-3 unshielded twisted pair x 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 x 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 x 2 Programmable LED indicators (Link and compliant Media Independent Interface (MII). The 78Q2123/78Q2133 are intended to serve the Activity by default) embedded Ethernet market, tailored specifically to the x User programmable Interrupt pin needs of game consoles, broadband modems, x Packages: 32-QFN (5x5 mm) and 32-TQFN (5x5mm) printers, set top boxes and audio/visual equipment. It x Low Power (~290mW) is designed for low-power consumption and operates x Single 3.3 V r 0.3V Supply from a single 3.3V supply. The 78Q2123 is rated for commercial temperature range and the 78Q2133 is x 78Q2123 rated for 0C to 70C operation rated for industrial temperature range. x 78Q2133 rated for -40C to 85C operation 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 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, Clock Reference LEDs 5B/4B Decoder Link Act 25MHz CLKIN Rev. 2.0 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 MediaIndependentInterface......................................................................................................... 9 1.5.1 MII Transmit and Receive Operation................................................................................... 9 1.5.2 Station Management Interface ............................................................................................ 9 1.6 AdditionalFeatures ......................................................................................................................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-NegotiationAdvertisementRegister.........................................................................17 3.6 MR5: Auto-Negotiation Link Partner Ability Register ................................................................18 3.7 MR6: Auto-NegotiationExpansionRegister ...............................................................................18 3.8 MR16: Vendor Specific Register .................................................................................................18 3.9 MR17: Interrupt Control/Status Register.....................................................................................20 3.10 MR18: DiagnosticRegister ..........................................................................................................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