KSZ9031RNX Просмотр технического описания (PDF) - Micrel

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KSZ9031RNX

Gigabit Ethernet Transceiver with RGMII Support

Micrel 

Micrel, Inc.

KSZ9031RNX

Functional Overview

The KSZ9031RNX is a completely integrated triple-speed (10Base-T/100Base-TX/1000Base-T) Ethernet physical layer

transceiver solution for transmission and reception of data over a standard CAT-5 unshielded twisted pair (UTP) cable. Its

on-chip proprietary 1000Base-T transceiver and Manchester/MLT-3 signaling-based 10Base-T/100Base-TX transceivers

are all IEEE 802.3 compliant.

The KSZ9031RNX reduces board cost and simplifies board layout by using on-chip termination resistors for the four

differential pairs and by integrating an LDO controller to drive a low-cost MOSFET to supply the 1.2V core.

On the copper media interface, the KSZ9031RNX can automatically detect and correct for differential pair misplacements

and polarity reversals, and correct propagation delays and re-sync timing between the four differential pairs, as specified

in the IEEE 802.3 standard for 1000Base-T operation.

The KSZ9031RNX provides the RGMII interface for direct and seamless connection to RGMII MACs in Gigabit Ethernet

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

Figure 1 shows a high-level block diagram of the KSZ9031RNX.

May 14, 2015

Figure 1. KSZ9031RNX Block Diagram

15

Revision 2.2

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