文稿全志a20蜂鸟humingbird

1、AllWinnerTechnology注意：PA剩余口全过孔接地，用于散热注意：PA剩余口全过孔接地，用于散热AllWinnerTechnologyDDR3-DDR3-AllWinnerTechnologyDDR316bitxBESIDE Have E er p Ra = No ave E er e p y,Ra = TWI-电容要靠近主控管脚AllWinnerTechnologyBESIDE Have E er p Ra = No ave E er e p y,Ra = TWI-电容要靠近主控管脚AllWinnerTechnologyERERER 靠近LDO3IN放靠近VIN1放置 CSI-

2、AVDD 注意把A部分器件贴 ;2、有ACIN时A部分器件不备注对于电感尺寸有轻薄要求的RTC使用乾坤ERERER 靠近LDO3IN放靠近VIN1放置 CSI-AVDD 注意把A部分器件贴 ;2、有ACIN时A部分器件不备注对于电感尺寸有轻薄要求的RTC使用乾坤AllWinnerTechnologylay板时走ER-=AllWinnerTechnologyER-=AllWinnerTechnologyWIFI-WiFi 50Ohm RFBAL1, rated current ionAP6210接上此电阻,AP6181和AP6330AllWinnerTechnologyWIFI-WiFi 50O

3、hm RFBAL1, rated current ionAP6210接上此电阻,AP6181和AP6330AllWinnerTechnologyWIFI-NANDTSOP-48NANDTSOP-48第一片第二片接1片单片选Nand 时，电阻A，B全断(2)接1片双片选Nand时，连接电阻A， 断开电阻(3) 接1选Nand 时，连接电阻B， 断开电阻(4) 接2片单片选或接2片双片选Nand 时，连接电阻A， 断开电阻AllWinnerTechnologyDifferentialpairs Z0= 100 ohmLAYOUT差分走线过孔能超过2个，有完整铺地AllWinnerTechnolog

4、yDifferentialpairs Z0= 100 ohmLAYOUT差分走线过孔能超过2个，有完整铺地AllWinnerTechnologyKEY-IR-TV KEY-IR-TV IRAllWinnerTechnologyFor 并要保证测试点方便焊排列整齐，以备调试使用AllWinnerTechnologyFor 并要保证测试点方便焊排列整齐，以备调试使用AllWinnerTechnologySATA-ExtendedDifferentialpairs Z0= 100 ohmSATA-ExtendedDifferentialpairs Z0= 100 ohmSECURITYIC此为同型号

5、不同封装，二选一贴AllWinnerTechnologySATA-ExtendedUSB- Differentialpairs Z0= 90 ohmIlim (A)=6800/Rset AllWinnerTechnologyUSB- Differentialpairs Z0= 90 ohmIlim (A)=6800/Rset AllWinnerTechnologyHP-CVBSAllWinnerTechnologyHP-CVBSAllWinnerTechnologyNote1 TheTracelengthnLaand10/100/1000RGMIIEthernetPin48mustbewith

6、in0.5cm.CJ(22uF)and CK(0.1uF)toLamustbewithin0.5cm.EMAC-GMAC-GMAC-ReserveforPHYAD0=1 LED0 LowActive PHYAD1=0 LED1HighActive RXDLY=1 LED2 Low Activef you use the GMAC-i te P ease use the Gigabit et Differentialpairs Z0= 100 ohmVCC-2V5 PlacefilternetworkclosetoCLK125. forEMIVCC-Placefilternetworkclose

7、toRX CLK. forEMIMAGNETICSNote2 The TracelengthfromCA(22uF),CB(0.1uF)to Pinmustbewithin0.5cm.The tracewidthfrom AVDD33toPin44,45 Note1 TheTracelengthnLaand10/100/1000RGMIIEthernetPin48mustbewithin0.5cm.CJ(22uF)and CK(0.1uF)toLamustbewithin0.5cm.EMAC-GMAC-GMAC-ReserveforPHYAD0=1 LED0 LowActive PHYAD1=0 LED1HighActive RXDLY=1 LED2 Low Activef you use the GMAC-i te P ease use the Gigabit et Differentialpairs Z0= 100 ohmVCC-2V5 PlacefilternetworkclosetoCLK125. forEMIVCC-PlacefilternetworkclosetoRX CLK. forEMIMAGNETICSNote2 The TracelengthfromCA(22uF),CB(0.