海思 3512接线图 JI:网线接口,从上到下,1:3.3V+,2:LINK_LED, 3:SYS_LED, 4:RJ45_CD, 5:RJ45_AB, 6:RJ45_RX-, 7:RJ45_RX+, 8:RJ45_TX-, 9:RJ45_TX+. J2:POE供电接口,从上到下, 1:GND, 2:DC, 3:POE_DC+ 4:DC_IN+, 5:RJ45_CD, 6:RJ45_AB, 7:POE_RXCT, 8:POE_:TXCT. J3:接数字 CMOS.可接 656,601数字信号。 J4:扩展板连接口。 J9:球机接口: 1:DC12V+, 2:GND, 3:视频输入, 4:GND, 5:485A, 6:485B, 7:3.3V, 8:3.3V。 J14:扩展板连接口。(从上到下: 2:GND,3:TX,4:RX,5:3.3V 这是接串 口) J13:音频接口:从左