參數(shù)資料
型號： AM79C984AJC
廠商： ADVANCED MICRO DEVICES INC
元件分類： 網(wǎng)絡(luò)接口
英文描述： enhanced Integrated Multiport Repeater (eIMR⑩)
中文描述： DATACOM, ETHERNET TRANSCEIVER, PQCC84
封裝： PLASTIC, LCC-84
文件頁數(shù)： 1/44頁
文件大?。?/td> 222K
代理商： AM79C984AJC
PRELIMINARY
This document contains information on a product under development at Advanced Micro Devices. The
information is intended to help you evaluate this product. AMD reserves the right to change or discontinue
work on this proposed product without notice.
Publication#
20650
Issue Date:
January 1998
Rev:
B
Amendment/
0
Am79C984A
enhanced Integrated Multiport Repeater (eIMR)
DISTINCTIVE CHARACTERISTICS
Repeater functions comply with IEEE 802.3
Repeater Unit specifications
Four integral 10BASE-T transceivers with on-
chip filtering that eliminate the need for external
filter modules on the 10BASE-T transmit-data
(TXD) and receive-data (RXD) lines
One Reversible Attachment Unit Interface
(RAUI) port that can be used either as a
standard IEEE-compliant AUI port for
connection to a Medium Attachment Unit (MAU),
or as a reversed port for direct connection to a
Media Access Controller (MAC)
Low cost suitable for non-managed multiport
repeater designs
Expandable to increase number of repeater
ports with support for up to seven eIMR devices
without the need for an external arbiter
All ports can be individually isolated
(partitioned) in response to excessive collision
conditions or fault conditions.
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Full LED support for individual port status LEDs
and network utilization LEDs
Programmable extended distance mode on the
RXD lines, allowing connection to cables longer
than 100 meters
Twisted Pair Link Test capability conforming to
the 10BASE-T standard. The Link Test function
and the transmission of Link Test pulses can be
optionally disabled through the control port to
allow devices that do not implement the Link Test
function to work with the eIMR device.
Programmable option of automatic polarity
detection and correction permits automatic
recovery due to wiring errors
Full amplitude and timing regeneration for
retransmitted waveforms
CMOS device with a single +5-V supply
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GENERAL DESCRIPTION
The enhanced Integrated Multiport Repeater (eIMR)
device is a VLSI integrated circuit that provides a sys-
tem-level solution to designing non-managed multiport
repeaters. The device integrates the repeater functions
specified in Section 9 of the IEEE 802.3 standard and
Twisted Pair Transceiver functions complying with the
10BASE-T standard.
The eIMR device provides four Twisted Pair (TP) ports
and one RAUI port for direct connection to a MAC. The
total number of ports per repeater unit can be in-
creased by connecting multiple eIMR devices through
their expansion ports, hence, minimizing the total cost
per repeater port.
The device is fabricated in CMOS technology and
requires a single +5-V supply.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM79C984AKC\\W 制造商:Advanced Micro Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述:
AM79C984AKC\W 制造商:Advanced Micro Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述:
AM79C984AKCW 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:enhanced Integrated Multiport Repeater (eIMR⑩)
AM79C984APLUTS 制造商:Advanced Micro Devices 功能描述:
AM79C984AWW WAF 制造商:Advanced Micro Devices 功能描述:
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