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Question About USB device Lib

Question asked by BEN_GAFSOS.gafsos on Jun 24, 2012
Latest reply on Jul 2, 2012 by Clive One

I'm working on USB device library V3.3.0; I'm new be in STM32 USB; I have some question:could you please help me
1/ I don't understand why SYSCFG module clock is used for the USB disconnect feature ?
2/ What GPIO_AINConfig() function do exactelly ?
3/ EXTERNAL_PULLUP and INTERNAL_PULLUP what are the differences and how they work ?
4/ PWR_EnterSTOPMode () is STM32 in STOP mode ? I measured  IDD I get a high value around (2mA)
5/What Get_SerialNum(void) fuction do ??

Abdul Kalam