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如题，看原理图时，不明白int，ext具体是什么作用，还有DVDSYS应该怎样连接？
跳线1和2 (int): Power supply via JTAG interface
跳线2和3 (ext): External power supply
DVDSYS是连接mcu的VDSYS引脚的
具体请参考：http://www.ti.com/lit/pdf/slau278
谢谢大神的答复~~~~那原理图中VCC1是DVCC的意思嘛？
