DM9000B 参数 Datasheet PDF下载

DM9000B

以太网控制器与通用处理器接口

8.1基本模式控制寄存器（ BMCR ） - 00 ........................................ .................................................. ....... 35

8.2基本模式状态寄存器（ BMSR ） - 01................................................................................................... 36

8.3 PHY ID标识符寄存器＃ 1 （ PHYID1 ） - 02 ...................................... .................................................. ...... 37

8.4 PHY ID标识符寄存器＃ 2 （ PHYID2 ） - 03 ...................................... .................................................. ...... 37

8.5自动协商广告寄存器（ ANAR ） - ....................................... 04 ........................................ 38

8.6自动协商链路伙伴能力寄存器（ ANLPAR ） - 05 ..................................... .............................. 39

8.7自动协商扩展寄存器（ ANER ） - ....................................... 06 ............................................... 39

8.8 DAVICOM指定的配置寄存器（ DSCR ） - 16 ........................................ .................................. 40

8.9 DAVICOM指定的配置和状态寄存器（ DSCSR ） - 17 ...................................... ............... 40

8.10 10BASE -T配置/状态（ 10BTCSR ） - 18 ...................................... ............................................... 42

8.11掉电控制寄存器（ PWDOR ） - 19 ........................................ .................................................. 43

8.12 （指定配置）寄存器 - 20 ................................................................................................................ 43

9.功能说明.............................................. .................................................. .... 45

9.1主机接口.............................................................................................................................................. 45

9.2直接内存访问Control.................................................................................................................... 45

9.3数据包传输................................................................................................................................... 45

9.4数据包接收........................................................................................................................................ 45

9.5 100BASE-TX操作............................................................................................................................... 46

9.5.1 4B5B Encoder...................................................................................................................................... 46

9.5.2 Scrambler............................................................................................................................................. 46

9.5.3并行到串行Converter.................................................................................................................. 46

9.5.4 NRZ到NRZI Encoder.......................................................................................................................... 46

9.5.5 MLT- 3转换器.................................................................................................................................. 46

9.5.6 MLT- 3驱动器........................................................................................................................................ 46

9.5.7 4B5B码组............................................................................................................................... 47

9.6 100BASE-TX接收器................................................................................................................................. 48

9.6.1信号Detect........................................................................................................................................ 48

9.6.2自适应均衡.......................................................................................................................... 48

9.6.3 MLT- 3到NRZI解码器....................................................................................................................... 48

9.6.4时钟恢复Module....................................................................................................................... 48

9.6.5 NRZI到NRZ ........................................................................................................................................ 48

9.6.6串口转Parallel................................................................................................................................... 48

9.6.7 Descrambler......................................................................................................................................... 48

9.6.8代码组对齐........................................................................................................................ 49

9.6.9 4B5B Decoder...................................................................................................................................... 49

9.7 10Base-T的操作.................................................................................................................................... 49

9.8碰撞检测...................................................................................................................................... 49

9.9载波侦听.............................................................................................................................................. 49

9.10 Auto-Negotiation........................................................................................................................................ 49

9.11功率降低Mode............................................................................................................................... 50

最终科幻

版本： DM9000B -13 -DS- F03

2012年3月5日

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