数据手册
3
3.3v 双-速 快 ethernet transceiver 数据手册 — lxt972a
内容
1.0 管脚 assignments
............................................................................................................10
2.0 信号 描述
........................................................................................................13
3.0 函数的 描述
..................................................................................................16
3.1 介绍..........................................................................................................16
3.1.1 comprehensive 符合实际 .................................................................16
3.1.2 OSP
™
Architecture ................................................................................16
3.2 网络 媒介 / 协议 支持.......................................................................17
3.2.1 10/100 网络 接口 .......................................................................17
3.2.1.1 twisted-一双 接口 ...............................................................17
3.2.1.2 故障 发现 和 reporting...................................................17
3.2.2 mii 数据 接口...................................................................................18
3.2.3 配置 管理 接口 .....................................................18
3.2.3.1 mdio 管理 接口 ....................................................18
3.2.3.2 mii 中断 .............................................................................19
3.2.3.3 硬件 控制 接口 .......................................................19
3.3 运行 (所需的)东西 .....................................................................................20
3.3.1 电源 (所需的)东西..............................................................................20
3.3.2 时钟 (所需的)东西 ...............................................................................20
3.3.2.1 外部 结晶/振荡器 .........................................................20
3.3.2.2 mdio 时钟 ...............................................................................20
3.4 initialization..........................................................................................................21
3.4.1 mdio 控制 模式 ...............................................................................21
3.4.2 硬件 控制 模式 .........................................................................21
3.4.3 减少 电源 模式 ..........................................................................22
3.4.3.1 硬件 电源 向下 .............................................................22
3.4.3.2 软件 电源 向下...............................................................22
3.4.4 重置 ......................................................................................................23
3.4.5 硬件 配置 settings ...........................................................23
3.5 establishing link .................................................................................................24
3.5.1 自动-negotiation.....................................................................................24
3.5.1.1 根基 页 exchange................................................................24
3.5.1.2 next 页 exchange.................................................................24
3.5.1.3 controlling 自动-negotiation .....................................................25
3.5.2 并行的 发现 ...................................................................................25
3.6 mii 运作.......................................................................................................25
3.6.1 mii clocks...............................................................................................26
3.6.2 transmit 使能 .....................................................................................26
3.6.3 receive 数据 有效的.................................................................................26
3.6.4 运输车 sense .........................................................................................26
3.6.5 错误 信号...........................................................................................26
3.6.6 Collision..................................................................................................26
3.6.7 Loopback................................................................................................28
3.6.7.1 运算的 loopback ...............................................................28
3.6.7.2 测试 loopback...........................................................................28
3.7 100mbps 运作.............................................................................................29
: 点此下载
