初步W89C982AF

集成的多中继器II

一般DESCRIPTION................................................................................................................. 2

FEATURES........................................................................................................................................ 2

订购INFORMATION.............................................................................................................. 2

系统框图.......................................................................................................................... 3

引脚配置...................................................................................................................... 3

引脚说明........................................................................................................................... 4

框图............................................................................................................................. 8

功能说明........................................................................................................... 8

AUI接口与双绞线收发器........................................... ............................................... 8

链路测试Function.........................................................................................................................................8

自动极性反转功能...........................................................................................................9

端口分区/重新连接Logic.................................................................................................................9

端口状态直接报告功能...............................................................................................................9

初始状态复位后...............................................................................................................................11

管理逻辑和管理界面............................................. ............................................ 11

IMPR II可编程Options..................................................................................................................15

该IMPR II内核Logic............................................................................................................................15

间IMPR II Interface.................................................................................................................................16

绝对最大额定值............................................... .................................................. .. 17

DC特性................................................................................................................. 17

AC特性................................................................................................................. 19

系统时钟Timing..................................................................................................................................19

重置Timing...............................................................................................................................................19

管理总线时钟Timing..................................................................................................................20

管理总线载波侦听Timing.....................................................................................................20

跨IMPR II接口输入时序............................................................................................................21

跨IMPR II接口输出时序.........................................................................................................22

跨IMPR II接口碰撞Timing.......................................................................................................23

跨IMPR II接口AUI / TP端口Timing.............................................................................................23

输出驱动器Timing...................................................................................................................................24

重复计时（第一部分） ...........................................................................................................................24

重复计时（第2部分） ...........................................................................................................................25

链路测试Timing..........................................................................................................................................26

包装尺寸................................................................................................................ 28

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出版日期： 1996年11月

修订版A1