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TNETE2008PBE

更新时间： 2024-11-26 13:14:51

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德州仪器 - TI		/
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TNETE2008PBE 数据手册

TNETE2008

OctalPHY

EIGHT 10BASE-T PHYSICAL-LAYER INTERFACES

SPWS042B – DECEMBER 1997 – REVISED JUNE 1998

Single-Chip With Eight Physical-Layer

(PHY) Interfaces for Internetworking

Applications

Intelligent Squelch With Selectable

Threshold

Link-Pulse Detection and Autonegotiation

Intelligent Rejection of MLT-3 Encoded Data

Each PHY Is Full-Duplex Capable for

Simultaneous Transmit and Receive

Transmit Pulse Shaping Reduces

Electromagnetic Interference (EMI)

Compliant With IEEE Std 802.3 10BASE-T

Specification

Clock Synchronization Between Channels

Collision Detection

Integrated Filters on Both Receive and

Transmit Circuits

– No External Filters Are Required

– Meets IEEE Std 802.3 (Section 14.3)

Electrical Requirements

Built-In Jabber Detection

Automatic Reversed-Polarity Detection and

Correction

Implements IEEE Std 802.3 Autonegotiation

to Establish the Highest Common Protocol

Sufficient Current Drive to Directly Connect

LED Status Indicators

Electrostatic Discharge (ESD) Human Body

Model (HBM) Protection 1.5 kV Per JEDEC

JESD22-A114A

CMOS Technology Enables Low Power

Consumption

3.3-V Operation

Digital Signal Processor (DSP)-Based

Digital Phase-Locked Loop (PLL)

†

IEEE Std 1149.1 (JTAG) Test-Access Port

(TAP)

Loopback Mode for Test Operations

Direct Drive to Network Coupling

Magnetics

Integrated Manchester Encoding/Decoding

Receive-Clock Regeneration for All Input

Channels Using Digital PLL

Packaged in 120-Pin Plastic Quad Flatpack

(PQFP)

FIFOs Accommodate 8x IEEE Limit on

Per-Channel-Pair Frequency Mismatch

Across All Eight Channels (IEEE Std 802.3,

Sec 7.3.2)

description

The TNETE2008 OctalPHY is a physical-layer (PHY) interface device for up to eight 10BASE-T networks using

a multiplexed medium access controller (MAC) interface compatible with TNETX3110, TNETX3151,

TNETX3190, or TNETX3270 switch devices, or equivalent. A digital-signal-processor (DSP)-based

phase-locked loop (PLL) is used on each channel to recover data. Integrated wave shaping of the output

eliminates the need for filters to meet electromagnetic interference (EMI) testing. DSP-based wave-shaping

techniques used internally reduce the required number of external components to a coupling transformer, four

resistors, and a capacitor per channel. The multiplexed host interface reduces the number of terminals required

to connect eight networks to eight MAC engines, allowing the use of a single package.

The TNETE2008 operation is fully automatic. It can be taken from reset to full operation without parameter

downloads or interaction with a host central processing unit (CPU). Some mode terminals affect all of the ports,

such as looping back transmit data to the receive path, powering down the PHY, and setting the receiver

threshold. There are no management interfaces or internal registers on this device. A directly driven LED matrix

provides Ethernet status indicators, i.e., link, activity, collision, and duplex. The TNETE2008 produces and

receives IEEE Std 802.3-compliant waveforms when coupled to the network with a suitable transformer. The

TNETE2008 also incorporates a JTAG-compliant test port.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

†

IEEE Std 1149.1-1990, IEEE Standard Test-Access Port and Boundary-Scan Architecture

Ethernet is a trademark of Xerox Corporation.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...33

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与TNETE2008PBE相关器件

型号	品牌	获取价格	描述	数据表
TNETE2101	TI	获取价格	10BASE-T/100BASE-TX/100BASE-FX LOW-POWER PHYSICAL-LAYER INTERFACE
TNETE2101APZ	TI	获取价格	10BASE-T/100BASE-TX/100BASE-FX LOW-POWER PHYSICAL-LAYER INTERFACE
TNETE2101PZ	TI	获取价格	10BASE-T/100BASE-TX/100BASE-FX LOW-POWER PHYSICAL-LAYER INTERFACE
TNETE2101PZ-R	TI	获取价格	10BASE-T/100BASE-TX/100BASE-FX LOW-POWER PHYSICAL-LAYER INTERFACE
TNETE211	TI	获取价格	ThunderLANE TO IEEE 802.12 PHYSICAL MEDIA DEPENDENT INTERFACE FOR 100VG-AnyLAN
TNETE211PN	TI	获取价格	100-VG-anylan2 PMD Interface 80-LQFP 0 to 0
TNETE211PNR	TI	获取价格	DATACOM, INTERFACE CIRCUIT, PQFP80, PLASTIC, QFP-80
TNETE2201	TI	获取价格	1.25-GIGABIT ETHERNET TRANSCEIVER
TNETE2201A	TI	获取价格	1.25-GIGABIT ETHERNET TRANSCEIVER
TNETE2201APHD	TI	获取价格	1.25-GIGABIT ETHERNET TRANSCEIVER

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