KSZ9563R datasheet(5/226 Pages) MICROCHIP

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DS00002419D-page 5

KSZ9563R

MDIX

Media Independent Interface with Crossover. An Ethernet port connection that allows

networked end stations (i.e., PCs or workstations) to connect to each other using a

null-modem, or crossover, cable.

MIB

Management Information Base. The MIB comprises the management portion of net-

work devices. This can include monitoring traffic levels and faults (statistical), and can

also change operating parameters in network nodes (static forwarding addresses).

MII

Media Independent Interface. The MII accesses PHY registers as defined in the IEEE

802.3 specification.

MIIM

Media Independent Interface Management

MLD

Multicast Listening Discovery. This protocol is defined by RFC 3810 and RFC 4604 to

establish multicast group membership in IPv6 networks.

MLT-3

Multi-Level Transmission Encoding (3-Levels). A tri-level encoding method where a

change in the logic level represents a code bit “1” and the logic output remaining at the

same level represents a code bit “0”.

msb

Most Significant Bit

MSB

Most Significant Byte

NRZ

Non Return to Zero. A type of signal data encoding whereby the signal does not return

to a zero state in between bits.

NRZI

Non Return to Zero Inverted. This encoding method inverts the signal for a “1” and

leaves the signal unchanged for a “0”

N/A

Not Applicable

No Connect

OUI

Organizationally Unique Identifier

PHY

A device or function block which performs the physical layer interface function in a net-

work.

PLL

Phase Locked Loop. A electronic circuit that controls an oscillator so that it maintains a

constant phase angle (i.e., lock) on the frequency of an input, or reference, signal.

PTP

Precision Time Protocol

RESERVED

Refers to a reserved bit field or address. Unless otherwise noted, reserved bits must

always be zero for write operations. Unless otherwise noted, values are not guaran-

teed when reading reserved bits. Unless otherwise noted, do not read or write to

reserved addresses.

RTC

Real-Time Clock

Source Address

SFD

Start of Frame Delimiter. The 8-bit value indicating the end of the preamble of an

Ethernet frame.

SQE

Signal Quality Error (also known as “heartbeat”)

SSD

Start of Stream Delimiter

TCP

Transmission Control Protocol

UDP

User Datagram Protocol - A connectionless protocol run on top of IP networks

UTP

Unshielded Twisted Pair. Commonly a cable containing 4 twisted pairs of wire.

UUID

Universally Unique IDentifier

VLAN

Virtual Local Area Network

WORD

16 bits

TABLE 1-1:

GENERAL TERMS (CONTINUED)

Term

Description

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