XMC1000 devices provides two channels to be used for ASC BSL mode.
When the device started, the pins for ASC BSL will be pull up and the startup firmware will detect the changes on these pins.
The startup firmware will detect any raising edge or falling edge on these pins to determined which channel will be used for ASC BSL.
Therefore, in any case, DO NOT connect any capacitor to any of the BSL pins even it is not used for ASC BSL.
This is because with capacitor connected to these pin, the voltage will be raised slowly on the pin with capacitor connected.
Due to this delayed, the firmware will detect it as raising edge and this pin will be used as ASC BSL pin.
Hence, the actual ASC BSL pin will not be activated.
