物联网网关电路图

我做的一个UART串口转网口的模块电路图现在贡献给大家。做好的实物图：全部电路图贡献出来。核心部分使用一个串口转网口的单芯片实现，外围电路照样做可以了。引出的引脚有：CTS、LINK、485_TEN、RTS、nRST、TXD、RXD、DEF，这些都是直接从ZLAN1003芯片引出来的引脚。电源输入可以是5V或者3.3V。网络部分图如下：1234567J3CON7VCC50VCC33GNDnRSTTXDRXDDEF4321J4CON4LINK485_TENCTSRTSC030.1uVCC33C02TAJB476K101RNJVCC50R2030R2014.7KD92RUN_LEDADJ1VIN3VOUT2U3LM1117-3.3ADJ1VIN3VOUT2U4LM1117-1.8VCC18C04TAJB476K101RNJC010.1uZLSN3003Soutput/inputpinsRUN_LEDVCC18CTSCTSnRSTVCC18VCC33TXDRUN_LEDPULL_UP1RXDRTSCONFIGSPEEDPULL_DOWN5PULL_DOWN4SPEEDPULL_UP2PULL_DOWN1PULL_DOWN2PULL_DOWN3SPEEDCONFIGNET_RX+NET_RX-NET_TX+NET_TX-LINKACTDEF485_ENPULL_UP2PULL_UP1RP10KR21MR112.1kC133pVCC4RESET2MR3GND1U1max811reus100M_LINK61RTS62GND63PULL_UP64RXD065VCC1866TXD067RXD168VCC3376VCC1875nRST74CTS273SDA72SCL71NC70TXD169NC80NC79GND78NC77NC1NC2NC3VCC184NC5NC6NC7NC8RXD29TXD210NC11NC12VCC3313RUN_LED14VCC1815CTS16GND17NC18NC19NC20GND40XTL+39XTL-38VCC1837VC1836VCC3335GND34CONFIG33SPD132PULL_DOWN31TEST_DOWN30VCC3329PULL-DOWN28PULL_DOWN27SPD026PULL_UP25PULL_DOWN24VCC1823NC22NC21485_T60VCC3359NC58NC57VCC1856DEF55ACT54LINK53VCC18O52VCC33I51GND50GND49TX-48TX+47VCC1846RX-45RX+44GND43VCC3342BG_RES41U2ZLAN1003X125MRSL110KR54.7KC233pR44.7KRSL210KR310KRSH110KVCC18VCC33VCC18VCC18VCC33VCC18VCC33VCC33VCC33VCC18VCC33VCC33VCC33VCC18VCC18Select:RSL2touselowspeedVCC18Select:RSH1tousehighspeed原理图网络接口部分（RJ45集成网络变压器）网口部分的设计，其中LINK和ACT连接到RJ45的灯上，用于指示TCP连接和数据活动。这样一个带有UART转网口功能的物联网网关就做好了WC230.1uR2349.9%1R2449.9%1R2149.9%1R2249.9%1C220.1uC210.1uNET_RX+NET_RX-NET_TX+NET_TX-VCC33RD-6R_CT5RD+3TD-2T_CT4TD+1NC7CHS_GND8GREEN+9GREEN-10YELLOW-11YELLOW+12U21HR911105ACRUSTR921KVCC33R931KVCC33LINKACT