KSZ9031RNXIC-TR Ethernet Transceiver: Datasheet, Pinout, Circuit

Product Overview

The KSZ9031RNX is a completely integrated triple-speed (10BASE-T/100BASE-TX/1000BASE-T) Ethernet physicallayer transceiver for transmission and reception of data on standard CAT-5 unshielded twisted pair (UTP) cable. The KSZ9031RNX provides the Reduced Gigabit Media Independent Interface (RGMII) for direct connection to RGMII MACs in Gigabit Ethernet processors and switches for data transfer at 10/100/1000 Mbps.

 

This blog will introduce KSZ9031RNXIC-TR systematically from its features, pinout to its specifications, applications, also including KSZ9031RNXIC-TR datasheet and so much more.

KSZ9031RNXIC-TR Features

• Single-Chip 10/100/1000 Mbps Ethernet Transceiver Suitable for IEEE 802.3 Applications
• RGMII Timing Supports On-Chip Delay Accordingto RGMII Version 2.0, with Programming Optionsfor External Delay and Making Adjustments and Corrections to TX and RX Timing Paths
• RGMII with 3.3V/2.5V/1.8V Tolerant I/Os
• Auto-Negotiation to Automatically Select theHighest Link-Up Speed (10/100/1000 Mbps) andDuplex (Half/Full)
• On-Chip Termination Resistors for the Differential Pairs

• On-Chip LDO Controller to Support Single 3.3VSupply Operation – Requires Only One ExternalFET to Generate 1.2V for the Core
• 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

 

KSZ9031RNXIC-TR Pinout

The following figure is the diagram of KSZ9031RNXIC-TR pinout.

 

KSZ9031RNXIC-TR Pinout

 

KSZ9031RNXIC-TR Applications

• Laser/Network Printer
• Network Attached Storage (NAS)
• Network Server
• Gigabit LAN on Motherboard (GLOM)
• Broadband Gateway
• Gigabit SOHO/SMB Router
• IPTV
• IP Set-Top Box
• Game Console
• Triple-Play (Data, Voice, Video) Media Center
• Industrial Control
• Automotive In-Vehicle Networking

 

KSZ9031RNXIC-TR CAD Models

The followings are KSZ9031RNXIC-TR Symbol, Footprint, and 3D Model.

 

KSZ9031RNXIC-TR Symbol

 

KSZ9031RNXIC-TR Footprint

 

KSZ9031RNXIC-TR 3D Model

 

KSZ9031RNXIC-TR Block Diagram

The following figure shows the block diagram of KSZ9031RNXIC-TR.

 

KSZ9031RNXIC-TR Block Diagram

 

KSZ9031RNXIC-TR Circuit Diagram

A crystal or external clock source, such as an oscillator, is used to provide the reference clock for the KSZ9031RNX. The reference clock is 25 MHz for all operating modes of the KSZ9031RNX.

 

The KSZ9031RNX uses the AVDDH supply, analog 3.3V (or analog 2.5V option for commercial temperature only), for the crystal/clock pins (XI, XO). If the 25 MHz reference clock is provided externally, the XI input pin should have a minimum clock voltage peak-to-peak (VPP) swing of 2.5V reference to ground. If VPP is less than 2.5V, series capacitive coupling is recommended. With capacitive coupling, the VPP swing can be down to 1.5V. Maximum VPP swing is 3.3V +5%.

 

The following figure shows the reference clock connection to XI and XO of the KSZ9031RNX.

 

KSZ9031RNXIC-TR Circuit Diagram

 

KSZ9031RNXIC-TR Package

The following diagram shows the KSZ9031RNXIC-TR package.