Microchip KSZ9031吉比特以太网收发器解决方案

Microchip KSZ9031吉比特以太网收发器解决方案

时间：2017-04-07 10:58:16 作者：Microchip 来源：中电网

microchip公司的KSZ9031是支持GMII/MII的吉比特以太网收发器,能在标准的未屏蔽双绞线(UTP)上以三速(10BASE-T/100BASE-TX/1000BASE-T)发送和接收数据,满足IEEE 802.3应用包括激光/网络打印机,网络服务器,宽带网关,吉比特SOHO/SMB路由器,IPTV,IP机顶盒,游戏控制台和IP照相机以及数据,语音和视频媒体中心和媒体转换器.本文介绍了KSZ9031主要特性,框图和系统框图,以及评估板KSZ9031MNX-EVAL主要特性,电路图和材料清单.

The KSZ9031MNX is a completely integrated triple-speed

(10BASE-T/100BASE-TX/1000BASE-T) Ethernet physicallayertransceiver for

transmission and reception of data on standard CAT-5 unshielded twisted pair (UTP)

cable.

The KSZ9031MNX offers the industry-standard GMII/MII (Gigabit Media Independent

Interface/Media IndependentInterface) for connection to GMII/MII MACs in Gigabit

Ethernet processors and switches for data transfer at 1000 Mbpsor 10/100 Mbps.

The KSZ9031MNX reduces board cost and simplifies board layout by using on-chip

termination resistors for the fourdifferential pairs and by integrating an LDO controller to

drive a low-cost MOSFET to supply the 1.2V core.

The KSZ9031MNX offers diagnostic features to facilitate system bring-up and debugging

in production testing and inproduct deployment. Parametric NAND tree support

enables

fault detection between KSZ9031MNX I/Os and the board.

The LinkMD® TDR-based cable diagnostic identifies faulty copper cabling. Remote and

local loopback functions verifyanalog and digital data paths.

The KSZ9031MNX is available in a 64-pin, lead-free QFN package.

KSZ9031主要特性:

• Single-Chip 10/100/1000 Mbps Ethernet TransceiverSuitable for IEEE 802.3

Applications

• GMII/MII Standard Interface with 3.3V/2.5V/1.8VTolerant I/Os

• Auto-Negotiation to Automatically Select theHighest Link-Up Speed (10/100/1000 Mbps)

andDuplex (Half/Full)

• On-Chip Termination Resistors for the DifferentialPairs

• On-Chip LDO Controller to Support Single 3.3VSupply Operation

• Jumbo Frame Support Up to 16 KB

• 125 MHz Reference Clock Output

• Energy-Detect Power-Down Mode for ReducedPower Consumption When the Cable is

NotAttached

• Wake-On-LAN (WOL) Support with Robust Custom-Packet Detection

• Programmable LED Outputs for Link, Activity, andSpeed

• Baseline Wander Correction

• LinkMD TDR-based Cable Diagnostic to IdentifyFaulty Copper Cabling

• Parametric NAND Tree Support to Detect FaultsBetween Chip I/Os and Board

• Loopback Modes for Diagnostics

• Automatic MDI/MDI-X Crossover to Detect andCorrect Pair Swap at All Speeds of

Operation

• Automatic Detection and Correction of PairSwaps, Pair Skew, and Pair Polarity

• MDC/MDIO Management Interface for PHY RegisterConfiguration

• Interrupt Pin Option

• Power-Down and Power-Saving Modes

• Operating Voltages

- Core (DVDDL, AVDDL, AVDDL_PLL): 1.2V(External FET or Regulator)

- VDD I/O (DVDDH): 3.3V, 2.5V, or 1.8V

- Transceiver (AVDDH): 3.3V or 2.5V(Commercial Temp.)

• 64-pin QFN (8 mm×8 mm) Package

KSZ9031目标应用:

• Laser/Network Printer

• Network Attached Storage(NAS)

• Network Server

• Broadband Gateway

• Gigabit SOHO/SMB Router

• IPTV

• IP Set-Top Box

• Game Console

• IP Camera

• Triple-Play (Data, Voice, Video) Media Center

• Media Converter

图9031功能框图

图9031系统框图

图9031吉比特磁接口电路图

评估板KSZ9031MNX-EVAL

The KSZ9031MNX is a completely integrated triple speed

(10Base-T/100Base-TX/1000Base-T)Ethernet Physical Layer Transceiver for

transmission and reception of data on standard CAT-5unshielded twisted pair (UTP) cable.

The KSZ9031MNX reduces board cost and simplifies board layout by using on-chip

terminationresistors for the four differential pairs and by integrating a LDO controller to

drive a low costMOSFET to supply the 1.2V core.

On the copper media interface, the KSZ9031MNX can automatically detect and correct for

differential pair misplacements and polarity reversals, and correct propagation delays and

re-synctiming between the four differential pairs, as specified in the IEEE 802.3 standard

for 1000Base-Toperation.

The KSZ9031MNX provides the industry standard GMII/MII (Gigabit Media Independent

Interface/ Media Independent Interface) for connection to GMII/MII MACs in Gigabit

Ethernet Processorsand Switches for data transfer at 1000 Mbps or 10/100Mbps speed.

The KSZ9031MNX Evaluation Board (KSZ9031MNX-EVAL) provides a comprehensive

platformto evaluate the KSZ9031MNX features. All KSZ9031MNX configuration pins are

accessible eitherby jumpers, test points or interface connectors.

评估板KSZ9031MNX-EVAL主要特性:

• Micrel KSZ9031MNX 10Base-T/100Base-TX/1000Base-T Physical Layer Transceiver

• RJ-45 Jack for Ethernet cable interface

•Auto MDI/MDI-X for automatic detection and correction for straight-through and

crossovercables

• GMII Loopback for standalone 1000Mbps evaluation

• MII Connector to interface with 10/100Mbps MAC controller/switch

• LED Indicators for link status and activity

• Jumpers to configure strapping pins

• Manual Reset Button for quick reboot after re-configuration of strapping pins

• USB port for MDC/MDIO programming access to KSZ9031MNX PHY registers

图4.评估板KSZ9031MNX-EVAL外形图

图5.评估板KSZ9031MNX-EVAL电路图(1)

图6.评估板KSZ9031MNX-EVAL电路图(2)

图7.评估板KSZ9031MNX-EVAL电路图(3)

图8.评估板KSZ9031MNX-EVAL电路图(4)

图9.评估板KSZ9031MNX-EVAL电路图(5)

图10.评估板KSZ9031MNX-EVAL电路图(6)

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图11.评估板KSZ9031MNX-EVAL电路图(7)

评估板KSZ9031MNX-EVAL材料清单: