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AM7992B? PDF预览

AM7992B?

更新时间： 2024-10-28 23:29:59

品牌	Logo	应用领域
超微 - AMD		光电二极管
页数	文件大小	规格书
27页	222K
描述
Am7992b? 224KB (PDF) Serial Interface Adapter (SIA)?

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中文翻译

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数据手册

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AM7992B? 数据手册

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FINAL

Am7992B

Serial Interface Adapter (SIA)

DISTINCTIVE CHARACTERISTICS

■ CompatiblewithlEEE802.3/Ethernet/Cheapernet

■ Input signal conditioning rejects transient noise

— Transients <10 ns for collision detector inputs

— Transients <20 ns for carrier detector inputs

speciﬁcations

■ Crystal/TTL oscillator-controlled Manchester

encoder

■ Receiver decodes Manchester data with worst

case ±19 ns of clock jitter (at 10 MHz)

■ Manchester decoder acquires clock and data

within four bit times with an accuracy of ±3 ns

■ TTL-compatible host interface

■ Transmit accuracy +0.01% (without adjustments)

■ Guaranteed carrier and collision detection

squelch threshold limits

— Carrier/collision detected for inputs greater than

–275 mV

— No carrier/collision for inputs less than –175 mV

GENERAL DESCRIPTION

The Am7992B Serial Interface Adapter (SIA) is a

Manchester encoder/decoder compatible with IEEE

802.3, Cheapernet, and Ethernet speciﬁcations. In an

IEEE 802.3/Ethernet application, the Am7992B inter-

faces the Am7990 Local Area Network Controller for

Ethernet (LANCE) to the Ethernet transceiver device,

acquires clock and data within four bit times, and de-

codes Manchester data with worst case ±19 ns phase

jitter at 10 MHz. SIA provides both guaranteed signal

threshold limits and transient noise suppression cir-

cuitry in both data and collision paths to minimize false

start conditions.

BLOCK DIAGRAM

Receive Data (RX)

Manchester

Receive+

Data

Decoder

Receiver

Receive Clock (RCLK)

Noise

Reject

Filter

Receive–

Carrier

Carrier Present (RENA)

Detect

Collision+

Collision–

Noise

Reject

Filter

Collision

Collision (CLSN)

Detect

Transmit+

Transmit–

Transmit Data (TX)

Manchester

Encoder

Transmit Enable (TENA)

Transmit Clock (TCLK)

XTAL₁

XTAL₂

Crystal

OSC

20 MHz

03378I-1

Publication# 03378 Rev: I Amendment/0

Issue Date: May 1993

1

12 3 4 5 6 7...27

中文翻译

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与AM7992B?相关器件

型号	品牌	获取价格	描述	数据表
AM7992BDC	AMD	获取价格	Serial Interface Adapter (SIA)
AM7992BDCB	AMD	获取价格	Serial Interface Adapter (SIA)
AM7992BDMB	ETC	获取价格	Communications Interface
AM7992BJC	AMD	获取价格	Serial Interface Adapter (SIA)
AM7992BJCB	AMD	获取价格	Serial Interface Adapter (SIA)
AM7992BJCTR	ETC	获取价格	Communications Interface
AM7992BPC	AMD	获取价格	Serial Interface Adapter (SIA)
AM7992BPCB	AMD	获取价格	Serial Interface Adapter (SIA)
AM7995DC	ETC	获取价格	Telecommunication IC
AM7995DCB	ETC	获取价格	Telecommunication IC

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