P L I M I N A R

AC开关测试波形.............................................. .................................................. .. 58

非PCI总线接口引脚............................................ .................................................. .... 58

PCI总线接口引脚.......................................................................................................... 58

开关特性在商业经营范围............................................ ........................ 59

上电复位时序........................................................................................................ 59

与电源应用复位时序............................................. ............................................ 61

ROM时序.......................................................................................................................... 63

PCI总线时序..................................................................................................................... 65

SDRAM时序..................................................................................................................... 66

SDRAM时钟时序........................................................................................................... 68

GP总线时序...................................................................................................................... 69

GP总线DMA读周期时序............................................ ............................................. 71

GP总线DMA的写周期时序............................................ .............................................. 72

SSI时序............................................................................................................................. 73

JTAG时序......................................................................................................................... 74

附录A ：针表............................................................................................................A-1

引脚列表汇总表列定义............................................ ................................ A- 6

附录B ：物理尺寸............................................. ............................................... B- 1

388引脚塑料BGA （ PBGA ）封装......................................... ....................................... B- 1

顶视图..............................................................................................................................B-1

底部视图........................................................................................................................B-2

电路板布局考虑.............................................. ...................................... B- 3

附录C ：客户支持............................................. .................................................. .C - 1

相关文档..............................................................................................................C-2

附加信息..........................................................................................................C-2

客户开发平台............................................... .......................................... C- 2

第三方开发支持产品............................................ ..................................... C- 2

顾客服务.................................................................................................................C-3

热线和万维网技术支持............................................ ................................. C- 3

企业应用咨询热线............................................... ......................................... C- 3

万维网主页............................................. ............................................ C- 3

文档和文学............................................... .......................................... C- 3

文学订购.......................................................................................................... C- 3

指数...................................................................................................................................指数- 1

图列表

图1 。

图2中。

网络连接gure 3 。

图4中。

图5中。

图6 。

图7 。

网络连接gure 8 。

图9 。

网络连接gure 10 。

图11 。

图12 。

图13 。

图14 。

图15 。

4

ELAN SC520微控制器框图............................................ ........... 29

ELAN SC520基于微控制器的智能家庭网关

参考设计................................................ ................................................. 34

ELAN SC520基于微控制器的瘦客户机参考设计.................... 35

ELAN SC520基于微控制器的数字机顶盒参考设计....... 36

ELAN SC520基于微控制器的电话线集中器

参考设计................................................ ................................................. 37

系统时钟分配框图............................................. ................ 38

时钟源的框图.............................................. .................................. 39

32.768 kHz的晶振电路............................................. ....................................... 41

33.333 MHz的第三泛音晶体实现........................................... 43

绕过32.768kHz的振荡器............................................ ........................ 44

绕过33 - MHz振荡器............................................ .............................. 44

RTC电压监控器框图............................................. ....................... 45

电路与备用电池.............................................. ..................................... 47

电路没有备用电池.............................................. ................................ 47

I / O驱动器6 mA的上升时间......................................... ............................................ 52

ELAN SC520单片机数据表