AM7996JCTR datasheet(1/18 Pages) AMD

tên linh kiện	AM7996JCTR

Giải thích chi tiết về linh kiện	IEEE 802.3/Ethernet/Cheapernet Transceiver

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nhà sản xuất	AMD [Advanced Micro Devices]

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FINAL

Publication# 07506

Rev: E Amendment/0

Issue Date: May 1994

1

Am7996

IEEE 802.3/Ethernet/Cheapernet Transceiver

DISTINCTIVE CHARACTERISTICS

s Compatible with Ethernet Version 2 and

IEEE 802.3 10BASE-5 and10BASE-2

speciﬁcations

s Pin-selectable SQE Test (heartbeat) option

s Internal jabber controller prevents excessive

transmission time

s Noise rejection ﬁlter ensures that only valid data

is transmitted onto the network

s Collision detection on both transmit and receive

data

s Collision detect threshold levels adjustable for

other networking applications

GENERAL DESCRIPTION

The Am7996 IEEE 802.3/Ethernet/Cheapernet Trans-

ceiver suppor ts Ethernet Version 2, IEEE 802.3

10BASE-5 and IEEE 802.3 10BASE-2—Cheapernet)

transceiver applications. Transmit, receive, and colli-

sion detect functions at the coaxial media interface to

the data terminal equipment (DTE) are all performed by

this single device.

In an IEEE 802.3 (10BASE-5)/Ethernet application, the

Am7996 interfaces the coaxial (0.4

″ diameter) media to the

DTE through an isolating pulse transformer and the 78

Ω

attachment unit interface (AUI) cable. In IEEE 802.3

10BASE-2—Cheapernet applications, the Am7996 typi-

cally resides inside the DTE with its signals to the DTE iso-

lated and the coaxial (0.2

″ diameter) media directly

connected to the DTE. Transceiver power and ground in

both applications are isolated from that of the DTE.

The Am7996’s tap driver provides controlled skew and

current drive for data signaling onto the media.The jabber

controller prevents the node from transmitting exces-

sively. While transmitting, collisions on the media are de-

tected if one or more additional stations are transmitting.

The Am7996 features an optional SQE Test function

that provides a signal on the Cl pair at the end of every

transmission. The SQE Test indicates the operational

status of the Cl pair to the DTE. It can also serve as an

acknowledgment to the node that packet transmission

onto the coax was completed.

BLOCK DIAGRAM

Line

Driver

Line

Driver

Transmit

Data

Amplifier

Control

Logic

Carrier

Detect

Circuit

Receive

Data

Amplifier

Collision

Detect

Circuit

Jabber

Timer

SQE Test

Generator

Transmit

Squelch

Input

Buffer

SQE TEST

DO+

DO–

Control

Logic

Tap

Driver

TXT

Input

Buffer

CI+

CI–

DI+

DI–

RXT

07506E-1

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Advanced Micro Devices	AM7996EVAL-HW	39Kb / 2P	Ethernet/Cheapernet Transceiver Evaluation Kit

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Motorola, Inc	MC34055	184Kb / 16P	IEEE 802.3 10BASE-T TRANSCEIVER
Advanced Micro Devices	AM7996EVAL-HW	39Kb / 2P	Ethernet/Cheapernet Transceiver Evaluation Kit
Premier Magnetics, Inc.	A8DB101150	64Kb / 2P	ETHERNET / CHEAPERNET LAN COUPLING TRANSFORMERS
AVAGO TECHNOLOGIES LIMI...	HFBR-4402	234Kb / 24P	Meets IEEE 802.3 Ethernet and 802.5 Token Ring Standards
Level One	POR-0200	623Kb / 3P	IEEE 802.3 10Base-T, Ethernet
	POR-0202	708Kb / 3P	IEEE 802.3 10Base-T, Ethernet
	POR-1200	454Kb / 3P	IEEE 802.3 10Base-T, Ethernet
	POR-1202	521Kb / 3P	IEEE 802.3 10Base-T, Ethernet
Bothhand USA, LP.	TS8019-HF	248Kb / 2P	IEEE 802.3/ANSI X3.263 compliant performance
Keysight Technologies	N1081A	3Mb / 13P	IEEE 802.3 Ethernet Compliance

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