I have a SIM card reader connected to an ARM, and I'm trying to get the SIM to send an Answer To Reset (ATR) and to get the reader to capture it.
As I understand, an ATR is sent after an "electrical reset" by the card to the reader. Now in my design,
VDD to connected to
3.3V so I cannot use that pin to make the electrical reset. The only other pin I see can that be used for that purpose is the
STOP pin. However, the datasheet specifies that the
STOP was not designed for the electrical reset:
With the STOP pin a low current shutdown mode can be activated making the battery life longer
How should I make an electrical reset to the pin to get an ATR?