【】,IC型号LXT9863,LXT9863 PDF资料,LXT9863经销商,ic,电子元器件-51电子网

1.0

2.0

3.0

框图

............................................................................................................................... 7

引脚分配和信号说明

................................................................................. 8

实用Description................................................................................................................

3.1

3.2

介绍......................................................................................................................... 16

端口Configuration............................................................................................................... 17

3.2.1自动协商............................................ .................................................. ...... 17

3.2.2建立链路和端口连接.......................................... ..................... 18

接口描述......................................................................................................... 18

3.3.1双绞线Interface............................................................................................ 18

3.3.2媒体独立接口............................................ ..................................... 18

中继器操作............................................................................................................ 19

3.4.1 100 Mbps的转发操作........................................... ................................... 19

3.4.2 10 Mbps的转发操作........................................... ..................................... 20

需求..................................................................................................................... 20

3.5.1 Power..................................................................................................................... 20

3.5.2时钟...................................................................................................................... 21

3.5.3偏置Resistor.......................................................................................................... 21

3.5.4复位..................................................................................................................... 21

3.5.5 IRB巴士Pull-ups.................................................................................................... 21

LED操作.................................................................................................................... 21

3.6.1 LED灯在启动.......................................... .................................................. ........ 21

3.6.2 LED赛事拉伸............................................ ................................................ 22

3.6.3串行LED Interface............................................................................................... 22

3.6.4串行Shifting......................................................................................................... 22

3.6.4.1串行LED信号............................................ ..................................... 23

3.6.4.2活动图的LED ............................................ ................................... 23

3.6.5直接驱动LED的............................................ .................................................. .... 24

3.6.6 LED模式............................................................................................................ 24

3.6.6.1 LED模式1 ............................................ ............................................... 25

3.6.6.2 LED模式2 ............................................ ............................................... 25

3.6.6.3 LED模式3 ............................................ ............................................... 26

3.6.6.4 LED模式4 ............................................ ............................................... 28

IRB操作..................................................................................................................... 28

3.7.1 IRB信号类型............................................ .................................................. ..... 28

3.7.2 10M-只有操作........................................... .................................................. 29

3.7.2.1 MAC IRB访问............................................ ....................................... 29

3.7.3 LXT98x / 91X / 98xx兼容性......................................... .................................... 29

MII端口操作.............................................................................................................. 31

3.8.1序言处理............................................. .................................................. 31

3.3

3.4

3.5

3.6

3.7

3.8

4.0

应用信息

.............................................................................................................. 32

4.1

4.2

一般设计准则............................................... .................................................. 32

电源和Ground.............................................................................................................. 33

4.2.1电源滤波...................................................................................................... 33

4.2.2地面Noise......................................................................................................... 33

数据表

文件编号： 249115

修订＃： 003

修订日期： 01年8月7日

4.3

电源和地平面布局的注意事项............................................ ...... 33

机箱接地..................................................................................................... 34

在RBIAS Pin....................................................................................................... 34

信息产业部终结................................................ .................................................. 35 ..

双绞线Interface............................................................................................ 36

4.2.7.1磁信息............................................. ............................... 36

4.2.8 Clock...................................................................................................................... 37

4.2.9 LED Circuits........................................................................................................... 39

4.2.9.1直接驱动LED的............................................ ...................................... 39

4.2.9.2 LED引脚复用配置输入.................................... 39

4.2.9.3串口的LED ............................................. ............................................... 40

间中继背板兼容性............................................. ................................ 41

4.3.1本地背板- 3.3V只有......................................... ........................................ 41

4.3.2堆叠背板- 3.3V或5V ........................................ ....................................... 41

4.3.2.1 3.3V -只有栈.......................................... ......................................... 41

4.3.2.2对于5V向后堆叠性........................................... ................... 41

4.3.2.3 3.3V和5.0V堆叠板不能混用................................ 41

4.2.3

4.2.4

4.2.5

4.2.6

4.2.7

5.0

6.0

试验Specifications......................................................................................................................

机械Specifications..........................................................................................................

科幻居雷什

LXT98x3座Diagram............................................................................................................... 7

LXT9883引脚分配........................................................................................................... 8

典型LXT9883中继架构.............................................. ...................................... 17

MII Interface................................................................................................................................ 19

串行LED转换负荷........................................................................................................... 22

串行端口LED信号........................................................................................................... 23

100M IRB连接................................................................................................................ 29

IRB框图....................................................................................................................三十

LXT9883 MII操作.............................................................................................................. 32

连接电源和地.............................................. .................................................. 35

典型的双绞线端口接口和电源滤波........................................ ........ 38

典型的复位电路.................................................................................................................. 38

LED电路 - 直驱&复用配置输入......................................... ......... 39

串行LED电路....................................................................................................................... 40

LXT98x和LXT98x3的100M背板连接........................................... ........ 42

典型的100 Mbps的内部评级法的实施............................................. ......................................... 43

典型的10 Mbps的内部评级法的实施............................................. ........................................... 43

100 Mbps的TP端口到端口延迟时序........................................ ............................................. 48

100BASE -TX MII到TP端口时序........................................ .................................................. 49

100BASE-TX的TP到MII时序......................................... .................................................. ...... 50

10BASE -T MII到TP时机...................................................................................................... 51

10BASE -T TP-到MII端口时序........................................ .................................................. .... 52

100Mbps的TP到IRB的时序...................................................................................................... 53

10 Mbps的TP到IRB的时序........................................................................................................ 54

10 Mbps的IRB对TP端口时序......................................... .................................................. ..... 55

LXT98x3封装规格............................................... ............................................... 56

数据表

文件编号： 249115

修订＃： 003

修订日期： 01年8月7日

表

MII ＃ 1信号说明............................................................................................................ 9

MII ＃ 2信号说明.......................................................................................................... 10

间中继背板信号说明............................................ ............................... 11

双绞线端口信号说明............................................ ............................................ 13

LED信号说明............................................................................................................. 14

电源和指示信号说明............................................ .......................... 15

其他信号说明............................................... .............................................. 16

串行LED端口位流......................................................................................................... 23

ACTGLED显示模式.......................................................................................................... 24

LED Terms.................................................................................................................................. 24

LED模式1 Indications.............................................................................................................. 25

LED模式2 Indications.............................................................................................................. 26

LED模式3 Indications.............................................................................................................. 27

LED模式4 Indications.............................................................................................................. 28

级联和堆叠连接.............................................. .......................................... 30

IRB信号Details....................................................................................................................... 31

LXT98x3磁Specifications............................................................................................. 36

振荡器Manufacturers............................................................................................................. 37

绝对最大额定值........................................................................................................ 44

工作条件.................................................................................................................. 44

输入系统时钟1 ..............................................要求............................................. 44

I / O电Characteristics....................................................................................................... 45

100 Mbps的IRB电气特性............................................. ........................................ 45

10 Mbps的IRB电气Characteristics....................................................................................... 46

100BASE -TX收发器的电气特性............................................ ..................... 47

10BASE -T收发器电气特性............................................ .......................... 47

100 Mbps的TP端口到端口延迟时序参数....................................... .......................... 48

100BASE -TX MII到TP端口时序参数....................................... ................................ 49

100BASE -TX TP-到MII时序参数........................................ ....................................... 50

10BASE -T MII到TP时序参数........................................ ........................................... 51

10BASE -T TP-到MII端口时序参数....................................... ..................................... 52

100 Mbps的TP-到IRB时序参数1 ......................................... ......................................... 53

10 Mbps的TP-到IRB时序参数1 ......................................... ........................................... 54

10 Mbps的IRB对TP端口时序参数......................................... ..................................... 55

数据表

文件编号： 249115

修订＃： 003

修订日期： 01年8月7日