LAN9312 datasheet(17/458 Pages) SMSC

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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

Datasheet

SMSC LAN9312

Revision 1.2 (04-08-08)

DATASHEET

MII

Media Independent Interface

MIIM

Media Independent Interface Management

MIL

MAC Interface Layer

MLD

Multicast Listening Discovery

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

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

Outbound

Refers to data output from the LAN9312 to the host

PIO cycle

Program I/O cycle. An SRAM-like read or write cycle on the HBI.

PISO

Parallel In Serial Out

PLL

Phase Locked Loop

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 guaranteed 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.

SIPO

Serial In Parallel Out

SMI

Serial Management Interface

SQE

Signal Quality Error (also known as “heartbeat”)

SSD

Start of Stream Delimiter

UDP

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

networks

UUID

Universally Unique IDentifier

WORD

16-bits

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