DM9000B
以太网控制器与通用处理器接口
9.11.1掉电模式............................................................................................................................. 43
9.11.2降低的发射功率Mode......................................................................................................... 43
10.直流和交流电气特性........................................... ............................... 44
10.1绝对最大额定值（ 25
°
C ) ......................................................................................................... 44
10.1.1工作条件......................................................................................................................... 44
10.2直流电气特性（ VDD = 3.3V ） ........................................ .................................................. .... 44
10.3 AC电气特性&时序波形........................................... ....................................... 45
10.3.1 TP接口....................................................................................................................................... 45
10.3.2振荡器/晶体时序.................................................................................................................... 45
10.3.3上电复位Timing..................................................................................................................... 45
10.3.4处理器的I / O读Timing................................................................................................................ 46
10.3.5处理器的I / O写Timing................................................................................................................ 47
10.3.6 EEPROM接口Timing................................................................................................................. 48
11.应用Notes........................................................................................................... 49
11.1网络接口信号Routing.............................................................................................................. 49
11.2 10BASE-T / 100BASE-TX自动MDIX应用....................................... .................................................. 49
11.3 10BASE-T / 100BASE-TX （非自动MDIX变压器应用） ................................... ..................... 50
11.4电源去耦电容................................................................................................................... 51
11.5接地平面布局................................................................................................................................ 52
11.6电源平面分区........................................................................................................................... 53
11.7磁选型指南......................................................................................................................... 54
11.8晶体选择指南............................................................................................................................. 54
12.包装信息..................................................................................................... 55
13.订购Information..................................................................................................... 56
最终科幻
的版本： DM9000B - 13的DS -F02
2009年6月4日
5
DAVICOM [ DAVICOM SEMICONDUCTOR, INC. ]
