TI公司的TLK111是一款单端口以太网10Base-T和100Base TX 信号收发器芯片，内嵌以双绞线为传输前言的尺度以太网所有物理层吸收和发送数据的功能。别的，通过外部增加光端收发器器件可以实现100Base-FX信号收发功能。该芯片通过MII和RMII接口与内部MAC控制器举行数据交互，供电可接纳3.3V单独电源供电或接纳淘汰功率的3.3V和1.55V组合方式供电。本文首先先容芯片的简介、特点、内部框架图及应用范畴，并给出相应设计方案的设计原理图及元器件列表。
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 device 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.
TLK111主要特点：
Fully Pin Compatible with the TLK110 Device
IEEE 1588 SFD indication enables time stamping by a controller or processor
Low deterministic latency supports IEEE1588 implementation
IEEE 802.3u 100BASE-FX Fiber Interface
Fully programmable LED outputs for 11 states (Link, Activity , Speed, Blink, Collision Detect)
Low Power Consumption: <205mW PHY and 275mW with Center Tap (Typical)
Programmable Power Back Off to reduce PHY power up to 20% in systems with shorter cables
Cable Diagnostics
Programmable Fast Link Down Modes, <10µs reaction time
Variable I/O voltage range: 1.8V to 3.3V
3.3V MAC Interface
Fixed TX Clock to XI, with programmable phase shift
Auto-MDIX for 10/100Mbs
Energy Detection Mode
25 MHz Clock Out
MII and RMII Interfaces
Serial Management Interface
IEEE 802.3u MII
IEEE 802.3u Auto-Negotiation and Parallel Detection
Error-Free Operation up to 150 Meters Under Typical Conditions
IEEE 802.3u PCS, 100Base-TX Transceivers
IEEE 802.3u ENDEC, 10Base-T Transceivers and Filters
IEEE 1149.1 JTAG
Integrated ANSI X3.263 Compliant TP-PMD Physical Sublayer with Adaptive Equalization and Baseline Wander Compensation
10/100Mbs Packet BIST (Built in Self Test)
48-pin LQFP Package (7mm) × (7mm)
HBM ESD protection on RD± and TD± of 16kV
TLK111应用：
Industrial Networks and Factory Automation
Real Time Industrial Ethernet Applications such as EtherCAT®, Ethernet/IP™, ProfiNET®, SERCOSIII and VARAN
Motor and Motion Control
General Embedded Applications
图1. TLK111内部方框架图
TLK111方案先容：
The TLK111CUSEVM platform from Texas Instruments allows a customer to evaluate the TLK111 device and demonstrate the advanced features described in the TLK111 datasheet.
The EVM supports 10/100 Base-T and is IEEE 802.3 standard compliant.
The TLK111CUSEVM operates with a single supply (5V or 3.3V) from the MII. All other voltages required for the TLK111 are internally generated in the device.
The TLK111CUSEVM is designed to work in industrial temperatures.
Features
The TLK111CUSEVM features include:
• Industrial temperature rating: (-40°C to 85°C)
• Industrial temperature external magnetics
• Control and status:
C Configurable 8 PHY Addresses C 01h (default) or any other address between 00h - 07h using Jumpers
C 8 LEDs C 2 power, 6 status LEDs (speed, link, and active data)
• Strap options:
C MII or RMII jumper (MII disable)
C Resistor strapping options:
• Configurable PHY addresses 08h - 31h
• CFG_ANEG_MODE
• CFG_ANEG_SPD_0,1
• CFG_CROSSOVER
C RESET_N jumper
• Connections for the following interfaces:
C MII connector
C RJ-45 connector
• Single-sided component placement
• On-board clock C crystal or oscillator dual footprint
• On-board power supplied by MII connector only, resistors to configure 5V or 3.3V operation
TLK111方案原理图：
图2. TLK111方案原理图
TLK111方案质料清单：
PCB元件结构图：
详见：
sllsef8.pdf
sllu186.pdf
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