TLK111 datasheet(2/110 Pages) TI1

2 / 110 page

MII Option

RMII Option

MII/RMII Interface

100BASE-T/FX

TLK111

SLLSEF8B – AUGUST 2013 – REVISED JANUARY 2014

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The TLK111 is a single-port Ethernet PHY for 10Base-T and 100Base TX signaling. This device integrates

all the physical-layer functions needed to transmit and receive data on standard twisted-pair cables.

Additionally, the TLK111 supports 100Base-FX signaling via an external optical transceiver. The TLK111

supports the standard Media Independent Interface (MII) and Reduced Media Independent Interface

(RMII) for direct connection to a Media Access Controller (MAC).

The TLK111 is designed for power-supply flexibility, and can operate with a single 3.3V power supply or

with combinations of 3.3V and 1.55V power supplies for reduced power operation.

The TLK111 uses mixed-signal processing to perform equalization, data recovery, and error correction to

achieve robust operation over CAT 5 twisted-pair wiring. This device not only meets the requirements of

IEEE 802.3, but maintains high margins in terms of cross-talk and alien noise.

The TLK111 Ethernet PHY has a special Power Back Off mode to conserve power in systems with

relatively short cables. This mode provides the flexibility to reduce system power when the system is not

required to drive the standard IEEE 802.3 100m cable length, or the extended 150m, error-free cable

reach of the TLK111. For more detail, see application note SLLA328.

Figure 1-1. TLK111 Functional Block Diagram

Introduction

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