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AM79C985JC中文资料超威半导体数据手册PDF规格书

AM79C985JC
厂商型号

AM79C985JC

功能描述

enhanced Integrated Multiport Repeater Plus (eIMR??

文件大小

260.029 Kbytes

页面数量

48

生产厂商 Advanced Micro Devices
企业简称

AMD超威半导体

中文名称

美国超威半导体公司官网

原厂标识
数据手册

下载地址一下载地址二到原厂下载

更新时间

2025-5-28 23:01:00

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AM79C985JC规格书详情

GENERAL DESCRIPTION

The enhanced Integrated Multiport Repeater Plus (eIMR+) device is a VLSI integrated circuit that provides a system-level solution to designing 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.

DISTINCTIVE CHARACTERISTICS

■ Repeater functions compliant with IEEE 802.3 Repeater Unit specifications

■ Direct interface with the Am79C987 Hardware Implemented Management Information Base (HIMIB™) device for building a basic managed multiport repeater

■ Full software backwards compatibility with existing hub designs using Integrated Multiport Repeater Plus (IMR+™)/HIMIB devices

■ Network management and optional feature accessibility through a dedicated serial management port

■ Four integral 10BASE-T transceivers with on chip filtering eliminating 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 used either as a standard IEEE compliant AUI port for connection to a Medium Attachment Unit (MAU) or a reversed port for direct connection to a Media Access Controller (MAC)

■ Low cost suitable for managed multiport repeater designs

■ Number of repeater ports easily expandable with support for up to seven eIMR+ devices without the need for an external arbiter

■ All ports capable of being individually isolated (partitioned) in response to excessive collision conditions or fault conditions

■ Flexible LED support for individual port status and network utilization LEDs

■ Programmable extended distance mode on RXD lines allowing connection to cables longer than 100 meters

■ Link Test function and Link Test pulse transmission capable of being disabled through the management port allowing devices that do not implement the Link Test function to work with the eIMR+ device

■ Programmable automatic polarity detection and correction option permitting automatic recovery from wiring errors

■ Full amplitude and timing regeneration for retransmitted waveforms

■ CMOS device with a single +5-V supply

产品属性

  • 型号:

    AM79C985JC

  • 制造商:

    AMD

  • 制造商全称:

    Advanced Micro Devices

  • 功能描述:

    enhanced Integrated Multiport Repeater Plus(eIMR+⑩)

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